Calculate the percent ionic character of a chemical bond between beryllium and fluorine
The percent ionic character of a chemical bond, such as between beryllium and fluorine, can be determined using the difference in electronegativity between the two elements based on Pauling's scale. Most bonds exhibit partial ionic character, as they fall within the spectrum between purely ionic and purely covalent.
Explanation:The percent ionic character of a chemical bond refers to the degree to which the bond exhibits ionic properties. In an ideal ionic bond, electrons are completely transferred from one atom to another. However, in reality, most bonds fall within the spectrum between purely ionic and purely covalent, exhibiting partial ionic character.
In the case of the bond between beryllium and fluorine, you can determine the percent ionic character by making use of Pauling's electronegativity values. First, you would calculate the difference in electronegativity between the two elements. Then, you use this difference to estimate the percent ionic character based on Pauling's scale.
For example, consider the hypothetical molecule HCl mentioned in the reference. Supposed that HCl was completely ionic, its molecular dipole moment was calculated to be 6.09 D. The experimentally measured bond moment, however, turned out to be 1.03 D. The percent ionic character was hence calculated as the bond moment divided by the theoretical fully ionic bond moment, multiplied by 100%. The result was 17%.
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What volume is needed to make a 4.0 molar solution holding 12 moles of solute? 3.0 liters 48 liters 12 liters 4.0 liters
Answer: Option (a) is the correct answer.
Explanation:
Molarity is defined as the number of moles present in a liter of solution.
Mathematically, Molarity = [tex]\frac{\text{no. of moles}}{volume}[/tex]
Since, it is given that molarity is 4.0 molar or 4.0 m/L and no. of moles is 12 moles.
Therefore, calculate volume as follows.
Molarity = [tex]\frac{\text{no. of moles}}{volume}[/tex]
4.0 m/L = [tex]\frac{12 moles}{volume}[/tex]
volume = 3 L
Hence, we can conclude that volume of the given solution is 3 liters.
1.64 mol of nickel at 150.13ºC is placed in 1.00 L of water at 25.09ºC. The final temperature of the nickel-water mixture is 26.34ºC. What is the specific heat of nickel?
a. 0.439 J K-1 mol-1
b. 0.554 J K-1 mol-1
c. 2.28 J K-1 mol-1
d. 25.7 J K-1 mol-1
e. 31.6 J K-1 mol-1
How many moles of electrons are required to reduce one mole of nitrogen gas (N2) to two moles of nitrogen ions (N3-)?
Which type of storage facility is assumed to be safe for long term storage of nuclear waste products
Answer:
Deep geological disposal method
Explanation:
A deep geological disposal method is the most efficient method in disposing of the waste materials produced from a nuclear plant. These materials are disposed at a depth of usually about 200 to 1000 m below the surface and also from 1500 m to 5500 m below the surface. And it has to be below the groundwater level so that it does not contaminate it. So necessary precautionary measures are needed to be taken.
This method is used for the disposal of high and intermediate levels of nuclear waste often represented by HLW and ILW respectively.
substance which allows energy to pass through it
what are 2 key characteristics of a good scientific investigation
Draw a fatty acid chain that is 8 carbons long and is unsaturated
How many electrons are transferred in the ionic bond between sodium and chlorine in nacl?
Answer:
1
Explanation:
Just got it right on the quiz.
That is the exchange to fill.
Hope this helps.
What reactions are responsible for the glow and heat from the sun? nuclear fission nuclear fusion chemical reactions atomic disintegration?
calcium, magnesium, and phosphorus are all examples of
the basic organizational feature of the periodic table of elements
Brainliest if answered in the next 5m
A weak acid, like Hydrofluoric acid, can be dangerous if _____. Select all that apply.
concentrated
used without adult supervision
used without goggles
used without gloves
tasted
What net ionic equation can be derived from this complete ionic equation? 2fe3+(aq) + 6cl– (aq) + 6na+(aq) + 3co32– (aq) → fe2(co3)3(s) + 6cl– (aq) + 6na+(aq)?
If you have a solid like ice (solid water), which of the following substances below would most closely resemble the structure of ice? indium cadmium quartz topaz
According to the collision theory what two factors must be true to successfully result in a reaction
Explanation:
According to collision theory, more is the number of collisions between the particles of reactants more will be the rate of a reaction.
Two important factors of collision theory are as follows.
Sufficient energyOrientationSufficient energy: Molecules participating in a chemical reaction should have sufficient amount of energy so that they can overcome activation energy barrier and participate effectively in the reaction.
Orientation: Collision between the molecules should take place with proper orientation so that they successfully result in the formation of products.
According to the collision theory, the two factors that must be true for a reaction to occur are sufficient energy and proper orientation of reactant particles.
What is the collision theory of reactions?The collision theory states that a reactant molecules must collide effectively with energy greater than or equals to activation energy for products to be formed.
According to the collision theory, the two factors that must be true are:
reactant molecules must be oriented properly the reactant molecules must have sufficient energyTherefore, sufficient energy and proper orientation of particles is necessary for product formation.
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You are given a clear solution of KNO3. Using 3 – 4 sentences (in your own words) explain how you would determine if the solution is unsaturated, saturated or supersaturated.
The atomic number of this element is 9 and its mass is 20. how many neutrons does this element have?
Answer:
11 neutrons
Explanation:
Mass no. = 20
atomic no. = 9
no. of neutrons = mass number - atomic number
= 20 - 9
= 11 neutrons
True or False no two elements have the same atomic number.
In the sun, two hydrogen nuclides react together to make an atom of helium. the process releases energy. which type of reaction is this
Answer:
Fusion.
Explanation:
The core squeezes together so tightly that four hydrogen nuclei combine to form one helium atom. This is the textbook definition of nuclear fusion.
What is the approximate molar mass of a molecular solute if 300 g of the solute in 1000 g of water causes the solution to have a boiling point of 101°C? (Kb = 0.512°C/m; Kf = 1.86°C/m; molar mass of water = 18 g)
Answer: The molar mass of solute is 156 g/mol
Explanation:
Elevation in boiling point is defined as the difference in the boiling point of solution and boiling point of pure solution.
The equation used to calculate elevation in boiling point follows:
[tex]\Delta T_b=\text{Boiling point of solution}-\text{Boiling point of pure solution}[/tex]
[tex]\Delta T_b[/tex] = ? °C
Boiling point of pure water = 100°C
Boiling point of solution = 101°C
Putting values in above equation, we get:
[tex]\Delta T_b=(101-100)^oC=1^oC[/tex]
To calculate the elevation in boiling point, we use the equation:
[tex]\Delta T_b=iK_bm[/tex]
Or,
[tex]\Delta T_b=i\times K_b\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}[/tex]
where,
[tex]\Delta T_b[/tex] = 1°C
i = Vant hoff factor = 1 (For non-electrolytes)
[tex]K_b[/tex] = molal boiling point elevation constant = 0.52°C/m.g
[tex]m_{solute}[/tex] = Given mass of solute = 300 g
[tex]M_{solute}[/tex] = Molar mass of solute = ?
[tex]W_{solvent}[/tex] = Mass of solvent (water) = 1000 g
Putting values in above equation, we get:
[tex]1^oC=1\times 0.52^oC/m\times \frac{300\times 1000}{M_{solute}\times 1000}\\\\M_{solute}=156g/mol[/tex]
Hence, the molar mass of solute is 156 g/mol
Carbon monoxide poisoning is sometimes mistakenly identified as what?
When we breathe red blood cells bond to the oxygen but when we inhale carbon monoxide (CO), it sticks to red blood cells and block the oxygen and suffocation occurs. It is also known as “Silent Killer”.
Headaches, nausea and fatigue are some of early symptoms of carbon monoxide poisoning. It is sometimes mistakenly identified as “Flu”. Because this gas cannot be detected at home. It is produced by common household appliances, if not proper ventilated, such as water heaters, generators, cars etc.
Carbon monoxide poisoning and acute toxicity are related and often confused due to similar symptoms such as headache, weakness, and even death.
Carbon monoxide poisoning occurs due to inhaling excessive levels of carbon monoxide (CO), which can lead to symptoms like headache, dizziness, weakness, and even death. This poisoning is sometimes mistakenly identified as acute toxicity due to exposure to carbon monoxide.
Loss of consciousness, arrhythmias, seizures, and even death can result from large CO exposures.Long-term complications may include chronic fatigue, memory issues, and movement problems.Why does a compound have characteristic properties?
Answer: Because of the arrangement of atoms in a compound.
Explanation:
A compound is defined as the chemical specie which is formed by the combination of two or more different type of atoms. For Example: [tex]H_2O,O_2[/tex] etc...
A compound has different physical and chemical properties than corresponding elements because of change in identity. For Example: Hydrogen and oxygen are gases, but the compound formed by the combination of these two that is water is liquid.
In a chemical compound, elements are combined in a fixed ratio of their masses.
Hence, a compound has characteristic property because of the arrangement of atoms in a compound
Methanol is an important solvent. it is also an important starting material for the synthesis of other molecules. most methanol today is obtained from the
4 NH3 + 6 NO → 5 N2 + 6 H2O. How many moles of NO are required to completely react with 2.45 mol NH3? Show all of your work as well as the answer with the proper units.
Mole is equal to the Avogadro's constant. The 3.675 moles of NO is required to completely react with 2.45 mole of Ammonia.
Mole:
One mole is the unit of measurement of small particles like ions, atoms , and molecules. It is equal to the Avogadro's constant.
Given reaction,
[tex]\bold{4 NH_3 + 6 NO \rightarrow5 N_2 + 6 H_2O}[/tex]
Means 4 moles of Ammonia react with 6 moles of NO in reaction. the molar ratio of ammonia and NO is 4:6.
Hence,
Moles of NO required
[tex]\Rightarrow\bold{\frac{6}{4} \times 2.45 = 3.675 mole}[/tex]
Hence, we can conclude that the 3.675 moles of NO is required to completely react with 2.45 mole of Ammonia.
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He approximate molar concentration of several chemicals are given. find the ph of each. use the calculator and round to the nearest tenth, if necessary. oven cleaner: [h+] = 10−13 ph = water: [h+] = 0.0000007 ph = blood: [h+] = 0.00000004 ph = vinegar: [h+] = 0.0063 ph =
Answer:
oven cleaner: ph=13
water: ph=6.2
blood: ph=7.4
vinegar ph=2.2
Explanation:
got it right on ed
The pH values for the given solutions are calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions. The pH values for an oven cleaner, water, blood, and vinegar are found to be 13.0, 7.2, 7.4, and 2.2 respectively.
Explanation:To calculate the pH of a solution, we use the formula pH = -log[H+]. Here [H+] represents the molar concentration of hydrogen ions in moles per liter (M).
Oven cleaner: With [H+] = 10-13 M, we find pH as follows:
pH = -log(10-13) = 13.0
Water: For [H+] = 0.0000007 M or 7×10-7M:
pH = -log(7×10-7) = 7.2
Blood: Given [H+] = 0.00000004 M or 4×10-8M:
pH = -log(4×10-8) = 7.4
Vinegar: With [H+] = 0.0063 M:
pH = -log(0.0063) = 2.2
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A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?
Answer:
Density of the substance = 8.9 g/cm³
Explanation:
The volume of the substance = 10 cm³
Mass = 89 gm
Density = mass / volume = 89 gm / 10 cm³ = 8.9 g/cm³
If nickel is added to copper sulfate solution, the nickel will replace the copper. write the balanced equation
Answer:-
Ni + CuSO4 --> NiSO4 + Cu
Explanation:-
The symbol for Nickel is Ni.
The Symbol for copper is Cu.
Copper Sulphate has the formula CuSO4.
If Nickel replaces copper from copper sulphate then nickel sulphate is formed.
Nickel sulphate has the formula NiSO4.
So the equation becomes
Ni + CuSO4 --> NiSO4 + Cu
identify solute and solvent in 80 solution of ethyl alcohol with water
25 g of ethyl alcohol is dissolved in 100 ml of water (density = 0.99993 at 20 oc). what is the % w/w for the ethyl alcohol in the resulting solution?