Answer:
13. 2.60 L.
14. 2.40 L.
Explanation:
We can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
If n and T are constant, and have different values of P and V:
(P₁V₁) = (P₂V₂)
13. A gas occupies 4.31 liters at a pressure of 0.755 atm. Determine the volume if the pressure is increased to 1.25 atm.
P₁ = 0.755 atm, V₁ = 4.31 L.
P₂= 1.25 atm, V₂ = ??? L.
∴ V₂ = (P₁V₁)/(P₂) = (0.755 atm)(4.31 L)/(1.25 atm) = 2.60 L.
14. 600.0 mL of a gas is at a pressure of 8.00 atm. What is the volume of the gas at 2.00 at m.
P₁ = 8.0 atm, V₁ = 600.0 mL.
P₂= 2.0 atm, V₂ = ??? L.
∴ V₂ = (P₁V₁)/(P₂) = (8.0 atm)(600.0 mL)/(2.0 atm) = 2400/0 mL = 2.40 L.
Using Boyle's law, which states that the pressure and volume for a gas is a constant if the temperature is constant, we can determine that the new volume of the gas occupying 4.31 liters at 0.755 atm when the pressure is increased to 1.25 atm is 2.62 L. Similarly, when the pressure of a gas occupying 600.0 mL at 8.00 atm is reduced to 2.00 atm the new volume will be 2400 mL.
Explanation:To solve these problems, we can use the principles of Boyle's law, which states that the product of the pressure and volume for a gas is a constant if the temperature and the amount of gas remain unchanged. In other words, P1*V1 = P2*V2.
Problem 13
Let's use Boyle's law to calculate the new volume (V2) when the pressure (P2) is increased to 1.25 atm (P2). We know that the initial volume (V1) is 4.31 L, and the initial pressure (P1) is 0.755 atm.
V2 = P1*V1/P2 = (0.755 atm * 4.31 L) / 1.25 atm = 2.62 L
Problem 14
The initial volume (V1) is 600 mL and the initial pressure (P1) is 8.00 atm. The new pressure (P2) is 2.00 atm. So, we can calculate the new volume (V2) as:
V2 = P1*V1/P2 = (8.00 atm * 600.0 mL) / 2.00 atm = 2400 mL
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A volume of 25.0 mL of nitric acid, HNO3, is titrated with .12 M NaOH. To completely neutralize the acid 10.0 mL of NaOH must be added. What is The molarity of nitric acid is
Answer:
0.048M
Explanation:
Volume of acid = 25mL = 0.025L
Concentration of base NaOH = 0.12M
Volume of base NaOH = 10mL= 0.01L
Unknown:
concentration or molarity of the nitric acid = ?
Solution
We first write the balanced reaction equation:
HNO₃ + NaOH → NaNO₃ + H₂O
In this problem, the focus is on the reacting acid and base which are on the left hand side.
Now, to find the molarity of the nitric acid that would be completely neutralized by the base, we adopt the mole concept.
First, we work from the known to the unknow. We can find the number of moles of the base given because its parameters are complete. The number of moles is given by the expression below:
Number of moles = concentration x volume
To find the number of moles of the base, we put the parameters into the expression above:
Number of moles of NaOH = concentration of NaOH x volume of NaOH
= 0.01 x0.12
= 0.0012mol
From the number of moles of the base, we can find the unknown.
In the reaction equation:
1 mole of base neutralizes 1 mole of the acid
0.0012mole of the base will neutralize 0.0012mole of the acid
Therefore, 0.0012mole of HNO₃ was neutralized.
Now we can calculate the molarity of the acid using the expression below:
concentration of acid = [tex]\frac{ number of moles of acid}{volume of acid}[/tex]
concentration of acid = [tex]\frac{0.0012 }{0.025}[/tex] = 0.048M
The molarity of nitric acid (HNO3) used in the titration with 0.12 M NaOH is 0.048 M, calculated using the moles of NaOH needed to neutralize the acid and the volume of HNO3.
Given that the NaOH base has a concentration of 0.12 M and a volume of 10.0 mL was used to neutralize the acid, we first convert the volume of NaOH to liters (10.0 mL = 0.010 L) to calculate the moles of NaOH:
Moles of NaOH = Molarity × Volume (in liters) = 0.12 M × 0.010 L = 0.0012 mol
Since the reaction between HNO3 and NaOH is 1:1, the moles of HNO3 are equal to the moles of NaOH. Using the volume of HNO3 (25.0 mL = 0.025 L), we can calculate its molarity:
Molarity of HNO3 = Moles of HNO3 / Volume of HNO3 in liters = 0.0012 mol / 0.025 L = 0.048 M
how do scientist know climate change is happening
2016 the warmest year on record, but eight of the twelve months that make up the year from January through September, with the exception of June were the warmest on record for those respective months. This is evidence showing how the climate has changed
Answer:
Climate change is caused when fuel is burned. This leads to excess carbon dioxide into the air. Scientists know that climate change is happening when:
the temperature is getting hottersea levels are risingHope this helps and have a good day!
What is the total number of calories
of heat that must be absorbed to
change the temperature of
100 grams of H20 from 25°C to
30°C? (specific heat for H20 = 1
cal/g)
A 100
B 500
C 2,500
D 3,000
Answer:
D
Explanation:
I have two solutions. In the first solution, 1.0 moles of sodium chloride is dissolved to make 1.0 liters of solution. In the second one, 1.0 moles of sodium chloride is added to 1.0 liters of water. is the molarity of each solution the same?
The molarity of both solutions is the same, equaling to approximately 1.0 M (mol/L), because molarity is determined by the number of moles of solute per liter of solution, not just the solvent.
Explanation:Yes, the molarity of both solutions would indeed be the same. Molarity is defined as the number of moles of solute per liter of solution. In your first solution, you dissolved 1.0 moles of NaCl in a total of 1.0 liter of solution. In your second situation, you added 1.0 moles of NaCl to 1.0 liters of water, assuming it does not change the volume substantially, the total volume of the solution is also about 1.0 liters. Thus, the molarity, in both cases, would be approximately 1.0 M (mol/L). It's important to remember that molarity takes into consideration the entire volume of the solution, not just the solvent.
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While both solutions have the same amount of sodium chloride, the process of preparation leads to different volumes of the final solution which influences the molarity. Thus, the molarities of the two solutions are different with the first one being more concentrated.
Explanation:The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in liters.
In the first solution, 1.0 mole of sodium chloride (NaCl) is dissolved to make 1.0 liters of solution, hence its molarity is 1.0 moles/liter.
In the second solution, 1.0 moles of NaCl is added to 1.0 liters of water; however, when sodium chloride is added, the volume of the solution increases, so the resulting volume of the solution is greater than 1.0 liter which ultimately lessens the molarity of the solution.
Therefore, the molarity of the first solution is greater than the molarity of the second solution despite having the same amount of sodium chloride.
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What is the molarity of a solution made by mixing 3.50 g of potassium chromate in enough water to make 100.00 ml of this solution?
Answer:
.18 M
Explanation:
1st
The molarity of an aqueous solution (a solution that has water as the solvent) can be found just by remember this one formula = [tex]\frac{mol}{liters}[/tex].
[moles of solute / volume of solution in L]
So, what do we have? From a glance we have the number of solute (Potassium Chromate), that tells us that we need to convert that value that is in grams (g) into...Moles or (mol), we can do that like this
[tex]\frac{3.50 g}{ } \frac{1 mol}{194.19 g}[/tex]
After we cross multiply 3.50 times 1 and then divide by 194.19 - we get this value ⇒ .018 mol (the g cancels, and we keep mol)
(We get the 194.19 from adding up the molecular weight of Potassium Chromate, which is about 194.19 g/mol. In the above equation though, we flipped this, so that 1 mol is in the numerator and the 194.19 is in the denominator; this helps us convert the 3.50 g to moles).
2nd
Now, we just have to remember that 1 liter = 1000 ml. Because its easier for us to use a L instead of "ml" in the molarity formula. So...
100.00 ml = .1 L ....
(because [tex]\frac{100 ml}{ } \frac{1 L}{1000 ml} = .1L[/tex]
Finally, we just add our (.018 mol and .1 L) into one nice equation (plug the numbers we converted to back in)
[tex]\frac{.018 mol}{.1L} = .18 M[/tex]
Is it clear now?
A chemist is studying the following reaction: NO + NO2 ⇌ N2O3. She places a mixture of NO and NO2 in a sealed container and measures how long it takes to achieve equilibrium. She then devises a system of removing all the N2O3 that is produced in this reaction. What effect will this have?
Answer:
The reaction will continue in the forward direction until all the NO or all the NO₂ is used up.
Explanation:
Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.So, according to Le Chatelier's principle, removing the product (N₂O₃) from the system means decreasing the concentration of the products; thus, the reaction will proceed forward to produce more product to minimize the stress of removing N₂O₃ from the system. So, the reaction will continue in the forward direction until all the NO or all the NO₂ is used up.
Which of the following compounds has the highest boiling point?
2-pentanone
chloropentane
pentene
pentane
PLEASE EXPLAIN YOUR ANSWER
Answer:
from 2-pentanone chloropentane pentene and pentane, the correct one is 2-pentanone .
How many moles are present in 10.5 grams of NaCl?
0.180 mol
0.18 mol
0.457 mol
N(number of moles)=mass/molar mass
10.5=mass
Na=23 (rounded)
Cl=36 (rounded)
Add it together to get the molar mass
=59
Then refer back to the formula
10.5/59
=0.17796
Round that answer
=0.18 mol
Answer : The correct option is, 0.180 mole
Explanation : Given,
Mass of NaCl = 10.5 g
Molar mass of NaCl = 58.5 g/mole
Formula used :
[tex]\text{Moles of NaCl}=\frac{\text{Mass of NaCl}}{\text{Molar mass of NaCl}}[/tex]
Now put all the given values in this formula, we get the moles of NaCl.
[tex]\text{Moles of NaCl}=\frac{10.5g}{58.5g/mole}[/tex]
[tex]\text{Moles of NaCl}=0.179mole=0.180mole[/tex]
Therefore, the number of moles of NaCl is, 0.180 mole
4Al + 3O2 → 2Al2O3
In this chemical reaction, how many grams of Al2O3 will be produced if 375 grams of Al react completely? Express your answer to three significant figures.
Ans: 187.5 grams of Al2O3
Final answer:
To calculate the mass of [tex]Al_2O_3[/tex] produced from 375 grams of Al, we find the moles of Al, use the stoichiometry of the reaction to find the moles of [tex]Al_2O_3[/tex], and then convert to grams. The result is 708.6 grams of [tex]Al_2O_3[/tex].
Explanation:
Given the balanced chemical reaction [tex]4Al + 3O_2 \rightarrow 2Al_2O_3[/tex], we first need to calculate the number of moles of aluminum (Al) that's present in 375 grams. Using the molar mass of aluminum (26.98 g/mol), we can determine this:
Calculate moles of Al: [tex]375 g Al \times \frac{1 mol Al}{26.98 g Al}[/tex] = 13.9 moles of Al (rounded to three significant figures).According to the balanced reaction, 4 moles of Al will produce 2 moles of [tex]Al_2O_3[/tex]. Therefore, 13.9 moles of Al will produce [tex]\frac{13.9 moles Al}{4 moles Al} \times 2 moles Al_2O_3[/tex] = 6.95 moles of [tex]Al_2O_3[/tex].Finally, convert moles of [tex]Al_2O_3[/tex] to grams using its molar mass (101.96 g/mol): 6.95 moles [tex]Al_2O_3[/tex] x 101.96 g/mol = 708.6 grams of [tex]Al_2O_3[/tex] (rounded to three significant figures).Hence, if 375 grams of Al react completely, a total of 708.6 grams of [tex]Al_2O_3[/tex] will be produced.
Which area should have the lowest temperatures?
A. 1
B.2
C.3
D.4
Answer:
A. 1
Explanation:
The higher you get in the atmosphere the cooler the temperature will be. The reason it's actually colder is because, as you go up in the atmosphere, the Earth's atmosphere feels less pressure the higher up you go. So as the gas in the atmosphere rises it feels less pressure, which makes it expand.
Hope this Help :)
Please mark brainliest :D
Answer:
The first one is right :)
Explanation:
I got it right on Plato.
how do adaptations help an organism to reduce competition for food and other resources?
the niche of an organism is largely based on the evolution of an organism's physiology, behavior, and morphology
SC.8.E.5.3, SC.8.E.5.4, SC.8.E.5.6
6. Apply Concepts Energy generated from
nuclear fusion in the sun's core is what causes
the sun to "shine" and radiate energy through
the solar system. In fusion, four hydrogen
atoms fuse together to become one helium
atom. The atomic mass of hydrogen is 1.00794
and the atomic mass of helium is 4.0026.
How does the difference in the mass of four
hydrogen atoms and one helium atom help
explain the energy released by the sun?
They
Answer:
Explanation:
From Einstein's postulate, mass can be converted to energy using the expression below:
E = mc²
E is energy, m is the mass and c is the speed of light.
In a nuclear fusion process; 4 hydrogen atoms with a mass of 1.00794 combines to produce an helium atom of mass 4.0026. There is a mass difference between the 4 fusing hydrogen atoms and the resulting Helium atom:
Mass difference = 4(mass of hydrogen) - mass of helium
Mass difference = 4(1.00794 ) - 4.0026 = 4.03176 - 4.0026 = 0.02916
It is this difference in mass that is converted to energy that powers the sun.
Final answer:
The slight mass difference between four hydrogen atoms and one helium atom, through the process of nuclear fusion, is converted into a significant amount of energy, powering the sun's radiation and 'shine'.
Explanation:
The difference in the mass of four hydrogen atoms and one helium atom explains the energy released by the sun through the process of nuclear fusion. In nuclear fusion, four hydrogen nuclei (4 H) combine to form one helium nucleus (He), and this process results in a slight loss of mass. This mass is not lost but converted into energy according to Einstein's equation, E=mc2, where E is energy, m is mass, and c is the speed of light. The mass difference, although small (—0.7% less for helium compared to the combined mass of four hydrogen atoms), gets converted into a vast amount of energy. Specifically, this reaction produces about 3.6 × 1011 kJ of energy per mole of He produced. This energy is what causes the sun to 'shine' and radiate energy throughout the solar system.
Helppppp What released through nuclear fusion in stars
Energy
Gas
Mass
Pressure
Energy is released when this happens
I believe it is Energy, I am not sure. Sorry if it is wrong.
What is data that is not directly collected or observed by the scientist called?
.
A. Research data
B. Adjunct data
C. Secondary data
D. Derivative data
Answer: C. Secondary data
Explanation:
It means that the data that was collected by someone else that is not the scientist, it may include censuses, surveys, data bases or other sort of information. Such data could be collected by different private companies, from organizational records to government departments, as they often collect data for other research purposes and the information is available to be used for other scientific purposes.
A data that is not directly collected or observed by the scientist is called: C. Secondary data.
What is data?Data can be defined as a representation of instructions or factual information in a formalized manner, especially as a series of binary digits (bits) or samples that are used by scientist in an experiment or research.
Generally, there are two (2) main types of data and these include:
Primary dataSecondary dataIn Science, a secondary data refers to a type of data that isn't directly collected or observed by the scientist but from a primary source.
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If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?
4.0 mol
8.0 mol
16 mol
32 mol
Answer:
32 mols of water
Explanation:
2H2 + O2 ==> 2H2O
What your givens are telling you and what the equation is saying is that
for every mol of O2, you get 2 mols of H2O
So you could do it with the proportion about.
1/16 = 2/x Cross multiply
x = 16 * 2
x = 32
Answer:
32 mol
Explanation:
The balanced reaction from Oxygen and Hydrogen to form Water is:
(1/2)O₂ + H₂ ⇒ H₂O
So, 1/2 mol of oxygen forms 1 mol of water. The stoichiometry calculus must be:
1/2 mol of O₂ -------------------------- 1 mol of H₂O
16 mol of O₂ --------------------------- x mol of H₂O
By a direct simple three rule:
(1/2)x = 16
x = 32 mol
What color is produced when red light is added to green light?
-Hello There-
When red Light Is Added To Green Light You Get Yellow Light.Have A Great Day!
When red light is added to green light you get yellow
Parts of a_____ can often be separated by______ properties.
Answer: compound, chemical
Explanation:
What specific characteristics or characteristics contribute to the attraction between Earth and the moon
Answer:
Gravity and Mass.
Explanation:
The Earth has more mass than the moon and therefore a higher force of gravity. Because the Earth has a higher mass and force of gravity the moon is attracted to it.
Match each decimal number to the correct scientific notation. 30,700 0.000307 0.00000307 3,070,000 3.07 × 10-6 arrowRight 3.07 × 106 arrowRight 3.07 × 10-4 arrowRight 3.07 × 104 arrowRight
Answer:
3.07 × 10^4=30,700
3.07 × 10^-4=0.000307
3.07 × 10^-6=0.00000307
3.07 × 10^6=3,070,000
Explanation:
Answer:
30,700 = [tex]3.07\times 10^4[/tex]0.000307 =[tex]3.07\times 10^{-4}[/tex]0.00000307 = [tex]3.07\times 10^{-6}[/tex]3,070,000 = [tex]3.07\times 10^6[/tex]Explanation:
Scientific notation: It is the representation of expressing the numbers which are too big or too small by representing them in decimal form with one digit before the decimal point times 10 raise to the power.
For example : 6,000,000 is written as [tex]6.0\times 10^6[/tex]
30,700 = [tex]\frac{10^4}{10^4}30,700=3.07\times 10^4[/tex]0.000307 =[tex]\frac{000307}{10^6}= 3.07\times 10^{-4}[/tex]0.00000307 = [tex]\frac{00000307}{10^8}= 3.07\times 10^{-6}[/tex]3,070,000 = [tex]\frac{10^6}{10^6 }\times 3,070,000=3.07\times 10^6[/tex]HELP ASAP! GIVING BRAINLIEST!!
How could you give a pendulum more energy?
Answer:
Explanation:
In a simple pendulum with no friction, mechanical energy is conserved. Total mechanical energy is a combination of kinetic energy and gravitational potential energy. As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy
This piece of equipment removes small particles out of the cooled air before the air is sent to you in your mother's car.
A) filter
B) radiator
C) distillation apparatus
D) chromatography paper
Answer:
[tex]\boxed{\text{A) filter}}[/tex]
Explanation:
An automobile air filter is often made of porous pleated paper. Many of them are cylindrical, as in the diagram below, but others have shapes that fit the available space in the engine compartment.
B) is wrong. A radiator is used to cool the car's engine.
C) and D) are wrong. You probably won't find a distillation apparatus or chromatography paper in your mother's car unless she is a chemist taking them somewhere else.
It would be letter A
A manufacturing plant has been found guilty of polluting the nearby river. This is _______ pollution.
A. open-field
B. water-table
C. point source
D. nonpoint source
Answer:
the answer would be C: point source
Explanation:
because it specified the source of the pollution (manufacturing plant)
Answer:B.)
Explanation:
what the other person said
Which particles have approximately the same size and mass as each other?
Answer:
The particles that have approximately the same size and mass is Proton and Neutron.
Explanation:
Einstein‘s equation implies that a large amount of mass can be converted into a small amount of energy. True or false
This is false! Einstein’s equation implies that a small amount of mass can be converted into a huge amount of energy. For example, my mass (~125 kg) if converted to energy would release approximately 11.2 exajoules (1.12 x 10^19 J), or enough energy to power the whole United States for about 45 days.
Hope this helps!
What type of bond is most likely to form between two nitrogen (N) atoms:
A. Polar covalent bond
B. Nonpolar covalent bond
c. Ionic bond
D. Metallic bond
Answer:
B. Nonpolar covalent bond
Explanation:
Between two Nitrogen atoms, a non-polar covalent bond would be formed.
So, what is the nature of a covalent bond, and what makes a covalent bond non-polar?
A covalent bond is a type of bond that forms between two atoms that shares their valence electrons. The valence electrons are donated by the two atoms and they are shared in order to achieve an octet. This bond type is predominantly between atoms that have an electronegativity difference less than 0.5. Using the electronegativity values, we see that a difference of 0 would be obtained.
Due to equal affinities of the two atoms for the valence electrons, none of them will pull the electrons closer to themselves. There won't be any form of charge separation on the two atoms and a Nitrogen molecule will form. This makes the bond type a non-polar covalent type.
Answer:
B. Nonpolar covalent bond
Explanation:
Between two Nitrogen atoms, a non-polar covalent bond would be formed.
So, what is the nature of a covalent bond, and what makes a covalent bond non-polar?
A covalent bond is a type of bond that forms between two atoms that shares their valence electrons. The valence electrons are donated by the two atoms and they are shared in order to achieve an octet. This bond type is predominantly between atoms that have an electronegativity difference less than 0.5. Using the electronegativity values, we see that a difference of 0 would be obtained.
Due to equal affinities of the two atoms for the valence electrons, none of them will pull the electrons closer to themselves. There won't be any form of charge separation on the two atoms and a Nitrogen molecule will form. This makes the bond type a non-polar covalent type.
Why pluto is removed from planet?
Pluto was ruled not a planet anymore because it is a "dwarf planet"
Apparently, the International Astronomical Union's (IAU) definition of a planet includes that a planet should be part of a body that would orbit the sun.
According to the IAU, there are three criteria's that contribute to a planet being called a planet.
1. It is within orbit around the Sun.
2. It has a sufficient mass to assume a nearly round shape
and 3. It has "cleared the neighborhood" around it's orbit.
Pluto only so happens to meet 2 of these requirements, not including the third option.
Answer:
In august 2006 the international astronomical union (IAU) downgraded the status of Pluto to that of "Dwarf planet." this means that from now on only the rocky worlds of the inner solar system and the gas giants of the outer system will be designated.
("Hope this is helpful.")
In a nuclear fusion reaction, what state is matter in?
4Al + 3O2 → 2Al2O3
In this chemical reaction, how many grams of Al2O3 will be produced if 375 grams of Al react completely? Express your answer to three significant figures.
The mass of [tex]\( \text{Al}_2\text{O}_3 \)[/tex] produced is approximately [tex]\( 709 \text{ g} \).[/tex]
To determine the mass of [tex]\( \text{Al}_2\text{O}_3 \)[/tex] produced when 375 grams of [tex]\( \text{Al} \)[/tex] react completely, follow these steps:
Given Reaction:
[tex]\[ 4 \text{Al} + 3 \text{O}_2 \rightarrow 2 \text{Al}_2\text{O}_3 \][/tex]
Steps:
1. Calculate the molar mass of [tex]\( \text{Al} \) and \( \text{Al}_2\text{O}_3 \):[/tex]
Molar mass of Al aluminum: [tex]\( 26.98 \text{ g/mol} \)[/tex]
Molar mass of [tex]\( \text{Al}_2\text{O}_3 \)[/tex] aluminum oxide:
[tex]\[\text{Molar mass of } \text{Al}_2\text{O}_3 = (2 \times 26.98 \text{ g/mol}) + (3 \times 16.00 \text{ g/mol}) = 53.96 \text{ g/mol} + 48.00 \text{ g/mol} = 101.96 \text{ g/mol}\][/tex]
2. Convert the mass of [tex]\( \text{Al} \)[/tex] to moles:
[tex]\[\text{Moles of Al} = \frac{\text{mass of Al}}{\text{molar mass of Al}} = \frac{375 \text{ g}}{26.98 \text{ g/mol}} \approx 13.91 \text{ mol}\][/tex]
3. Use the stoichiometry of the reaction to find the moles of [tex]\( \text{Al}_2\text{O}_3 \)[/tex] produced:
According to the balanced equation, 4 moles of Al produce 2 moles of[tex]\( \text{Al}_2\text{O}_3 \)[/tex]. So:
[tex]\[\text{Moles of } \text{Al}_2\text{O}_3 = \left(\frac{2 \text{ moles } \text{Al}_2\text{O}_3}{4 \text{ moles Al}}\right) \times 13.91 \text{ mol} = 6.95 \text{ mol}\][/tex]
4. Convert the moles of [tex]\( \text{Al}_2\text{O}_3 \)[/tex] to grams:
[tex]\[\text{Mass of } \text{Al}_2\text{O}_3 = \text{moles of } \text{Al}_2\text{O}_3 \times \text{molar mass of } \text{Al}_2\text{O}_3\][/tex]
[tex]\[\text{Mass of } \text{Al}_2\text{O}_3 = 6.95 \text{ mol} \times 101.96 \text{ g/mol} \approx 708.7 \text{ g}\][/tex]
What is the significance of the meltdown at Chernobyl ?
Answer:
Chernobyl Accident 1986. The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel. The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the atmosphere and downwind – some 5200 PBq (I-131 eq).
Explanation:
The Chernobyl disaster was a catastrophic nuclear accident in 1986, causing immediate deaths and long-term health issues due to radiation. The region remains largely uninhabitable due to persistent contamination.
Significance of the Chernobyl Meltdown:
The Chernobyl disaster, which occurred on April 26, 1986, was a catastrophic nuclear accident at the Chernobyl Nuclear Power Plant in Ukraine. During an unauthorized safety test, reactor no. 4 exploded due to an uncontrollable chain reaction, causing immense steam pressure that ruptured the reactor and released radioactive material.
The aftermath saw 50 tonnes of radioactive material released into the environment, leading to the evacuation of approximately 30,000 people.
Immediate effects included the deaths of 32 plant workers and firefighters who succumbed to acute radiation sickness. Long-term consequences predict around 4000 additional deaths from radiation-induced illnesses like cancer among emergency workers and former residents.
The region around Chernobyl remains highly contaminated and largely uninhabitable, demonstrating the devastating and lasting impact of nuclear accidents on both human populations and the environment.
The Chernobyl disaster has highlighted the risks associated with nuclear energy, influenced global nuclear policy and safety standards, and left a stark reminder of the potential outcomes of nuclear energy mismanagement.
when a sample of a gas is cooled it condenses into a liquid. in which of the following ways do the molecules of the original gas sample compare with the molecules of a liquid.
Answer:
The molecules have shorter inter molecular distances and less kinetic energy than the original gas sample.
The cooling reduces the kinetic energy of the gas sample and thus the molecules making up the liquid sample travel less distances due to the less energy. The less inter molecular distances increases the attraction due to inter molecular forces packing the molecules near each other, forming a liquid.