The mass of fluorine in 36.5 g of SnF2 is approximately 8.85 g, calculated by finding the fraction of the mass due to fluorine in tin(II) fluoride based on its molar mass and multiplying it by the total mass of the compound.
Explanation:To calculate the mass of fluorine (F) in grams in 36.5 g of tin(II) fluoride (SnF2), we need to consider the molar mass of SnF2 and the proportion of fluorine within the compound. The molecular weight of SnF2 is approximately 156.7 g/mol (119.7 for Sn and 37.0 for the two fluorine atoms). To find the amount of F in SnF2, we can set up a ratio based on the molar masses:
Molar mass of SnF2: 156.7 g/molMolar mass of F in SnF2: (2 × 19.0) = 38.0 g/molNext, calculate the fraction of the mass that is due to fluorine:
(38.0 g/mol F) / (156.7 g/mol SnF2) = 0.2426 (fraction of F in SnF2)
Finally, multiply the fraction by the total mass of SnF2 to obtain the mass of F:
36.5 g × 0.2426 = 8.8549 g F
Therefore, the mass of fluorine in 36.5 g of SnF2 is approximately 8.85 g.
You wish to calculate the mass of hydrogen gas that can be prepared from 5.06 g of srh2 and 4.34 g of h2o.
High-purity silicon is obtained using a three-step process. the first step involves heating solid silicon dioxide, sio2, with solid carbon to give solid silicon and carbon monoxide gas. in the second step, solid silicon is converted into liquid silicon tetrachloride, sicl4, by treating it with chlorine gas. in the last step, sicl4 is treated with hydrogen gas to give ultrapure solid silicon and hydrogen chloride gas. part a write balanced chemical equations for the first step involved in this three-step process. express your answer as a chemical equation. identify all of the phases in your answer.
If you added 1.0 ml of the unknown pb(no3)2 to a test tube, what is the amount of hi in ml
9898978979777898987878788787878778788887878787787
which of the following would be the SI unit to use in the measuring the temperature of a hot liquid? A: ampere B: Mole C: Kelvin D: celsius
Hey, I know i'm too late but the answer is
C. Kelvin
Kelvin is the correct SI unit used to measure the temperature of substance.
Hope this somewhat helps! :)
Consider the anion whose charge is 2- and whose electron configuration is identical to argon. what is the symbol for this anion
If the ion is negatively charged, anion, it means that it gains two electrons from its surroundings. The number of electrons of an argon (neutral atom) is 18. Two of the electrons in our anion is from the surrounding, so originally it only has 16 electrons.
In the periodic table, the 16th element is sulphur. The chemical symbol of sulphur is S. Thus, the anion is the negatively charged sulphur with chemical symbol of S2-.
A curve showing the relationship between temperature and time for a given amount of liquid heated a constant rate is a __________ curve. a. heating c. liquid b. molar d. energy
A 13.2 mL rock weighs 47.6 g. Determine it's density. (Show ALL Work)
Answer: The density of rock is 3.60 g/mL
Explanation:
To calculate density of a substance, we use the equation:
[tex]\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}[/tex]
We are given:
Mass of rock = 47.6 g
Volume of rock = 13.2 mL
Putting values in above equation, we get:
[tex]\text{Density of rock}=\frac{47.6g}{13.2mL}\\\\\text{Density of rock}=3.60g/mL[/tex]
Hence, the density of rock is 3.60 g/mL
which of the following statements about line graphs is true?
A The dependent variable is on the horizontal axis.
B Line graphs are always straight lines.
C Every data point should be shown on a line graph.
D There is a maximum number of data points that can be used in a line graph.
The phosphate functional group in the non cyclic amp molecule answer
AMP is a nucleotide which stands for Adenosine monophosphate and it is also known as 5'-adenylic acid. It can exist as a cyclic adenosine monophosphate molecule and non cyclic adenosine monophosphate.
The blank variable response to changes in the manipulated variable
Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sample contains 0.25 g of X and the other contains 0.33 g of X. Identify plausible sets of formulas for these two compounds. Check all that apply.
I think the correct answers are X2Y and X3Y, X2Y5 and X3Y5, and X4Y2 and X3Y,
for the following reason:
If you look at the combining masses of X and Y in
each of the two compounds,
The first compound contains 0.25g of X combined with
0.75g of Y
so the ratio (by mass) of X to Y = 1 : 3
The second compound contains 0.33 g of X combined with
0.67 g of Y
so the ratio (by mass) of X to Y = 1 : 2
Now, you suppose to prepare each of these two
compounds, starting with the same fixed mass of element Y ( I will choose 12g
of Y for an easy calculation!)
The first compound will then contain 4g of X and 12g
of Y
The second compound will then contain 6g of X and
12g of Y
The ratio which combined
the masses of X and the fixed mass (12g) of Y
= 4 : 6
or 2 : 3
So, the ratio of MOLES of X which combined with the
fixed amount of Y in the two compounds is also = 2 : 3
The two compounds given with the plausible formula must therefore contain the same ratio.
To identify plausible sets of formulas for two compounds containing elements X and Y, use the given masses to calculate the ratios and apply the law of multiple proportions to determine simple whole-number ratios for potential empirical formulas.
Explanation:The question is regarding the identification of plausible sets of formulas for two compounds containing generic elements X and Y based on the amounts of element X in both compounds. By using the mass data provided (0.25 g and 0.33 g of X), along with the total sample mass (1.00 g for each compound), we can find the respective amounts of element Y in each compound (0.75 g and 0.67 g of Y, respectively).
Then, by taking the ratios of the masses of X to Y for each compound, we can determine simple whole-number ratios, which can suggest possible empirical formulas for the compounds. These formulas are based on the law of multiple proportions, which states that if two elements form more than one compound between them, then the ratios of the masses of the second element that combine with a fixed mass of the first element will be ratios of small whole numbers.
If you add meoh to cocl2(alc)2, the cocl2(alc)2 concentration will change. what are the two reasons for this concentration change?
G brønsted-lowry proton transfer reaction, hydroxide functions as a/an ______.
In a bronsted lowry proton transfer reaction, the hydroxide functions as a/an proton acceptor.
Bases are the opposite of acids. Bases are basic since they take or accept protons. For example, a Hydroxide ion can accept a proton to form water.
Answer:
Base
Explanation:
A Brønsted-Lowry acid is simply a compound that supplies a hydrogen ion in a reaction. A Brønsted-Lowry base on the other hand, is a compound that accepts a hydrogen ion in a reaction.
Thus, the Brønsted-Lowry definitions of an acid and a base focus on the movement of hydrogen ions in a reaction, rather than on the production of hydrogen ions and hydroxide ions in an aqueous solution.
The hydroxide ion in these compounds accepts a proton (Hydrogen ion) from acids to form water: This means shydroxides functions as a base.
how is osmosis different from diffusion?
physical or chemical change. metal surface that becomes dull on exposure to air
Which situation would result in a theory being replaced rather than revised?
Advent of new information that poses challenges to existing theories would result in a theory being replaced rather than revised.
What is theory?Theory is defined as a thoughtful explanation which is provided for observations which is constructed using scientific methods.The theory brings together many facts and hypothesis.
It is called as theory as it provides some set of assumptions initially which provide description to the field's approach to the subject.These are elementary theorems of a particular theory.It is a rational type of thinking about a set of observations.
They may be scientific,or non scientific or have no discipline at all.There are three types of theory:1) scientific, 2)philosophical and 3) moral.It provides explanation regarding the underlying mechanisms .
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What is the ratio of [a–]/[ha] at ph 3.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?
The formula for pH given the pKa and the concentrations are:
pH = pKa + log [a–]/[ha]
Therefore calculating:
3.75 = 3.75 + log [a–]/[ha]
log [a–]/[ha] = 0
[a–]/[ha] = 10^0
[a–]/[ha] = 1
Answer:
[tex]\frac{[A^-]}{[HA]}=1[/tex]
Explanation:
Hello,
In this case, one state the following relationship among the pH, pKa and the [a–]/[ha] ratio for the formic acid:
[tex]\frac{[A^-]}{[HA]}=\frac{Ka}{[H^+]}[/tex]
In such a way, we compute both the concentration of hydrogen ions and the acid's dissociation constant as:
[tex][H^+]=10^{-pH}=10^{-3.75}=1.78x10^{-4}M[/tex]
[tex]Ka=10^{-Ka}=10^{-3.75}=1.78x10^{-4}[/tex]
Thus, the [a–]/[ha] ratio becomes:
[tex]\frac{[A^-]}{[HA]}=\frac{1.78x10^{-4}}{1.78x10^{-4}}\\\frac{[A^-]}{[HA]}=1[/tex]
Best regards.
The rock had a mass of 500g and a density of 10 g/cm3. What is the volume of the rock
What is the effective nuclear charge experienced by the 2p and 3p electrons of a chlorine atom, respectively?
Effective nuclear charge by 2p = 13.35
Effective nuclear charge by 3p = 6.1
Further explanation
The effective nuclear charge is the nuclear charge which is influenced by the shielding effect of electrons
The effective nuclear charge (Zeff) can be formulated as:
[tex]\large{\boxed{\bold{Z_{eff}\:=\:Z\:-\:S}}}[/tex]
with
Z = nuclear charge = atomic number
S = shield constant
Shielding constants are constants that are generated from the core attraction of electrons in the inner skin
Rules for calculating shield constants
1. Electrons in orbitals are grouped according to skin/ 1s / 2s, 2p / 3s, 3p / 3d / 4s, 4p / 4d / 4f / 5s, 5p / 5d / 5f /
2. Electrons to the right of the electron studied by shield constants = 03. The electron to the left of the electron is studied by its shield constant:* Electrons in the same shell shielding effects = 0.35
* Electrons in the skin have deeper shielding effects = 0.85
* Electrons in the skin are deeper than shielding effects = 1.00
On Cl atom which have electron configurations:
1s² 2s² 2p⁶ 3s² 3p⁵
1. if we view the initial charge at 2p then the configuration1s² 2s² 2p⁶
the electron to the right of 2p does not have a shielding effect
so the shield constant:
S = 0.35. 8 + 0.85.1
S = 3.65
Zeff = Z - S
Zeff = 17 - 3.65 = 13.35
2. if we view the initial charge at 3p then the configuration1s² 2s² 2p⁶ 3s² 3p⁵
because 3p⁵ then only 4 electrons are counted so there are 2 + 4 = 6 electrons in the skin 3
so the shield constant:
S = 0.35 x 6 + 0.85 x 8 + 1 x 2
S = 10.9
Zeff = 17-10.9 = 6.1
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Keywords: The effective nuclear charge, electron, core, electron configurations:
The effective nuclear charge can be calculated from Slater's rules.
According to Slater's rule, the effective nuclear charge is obtained from;
Zeff = Z - S
Zeff = effective nuclear charge
Z = nuclear charge
S = screening
Note that;
Electrons in ns and np orbitals have S = 0.35Electrons in the penultimate shell (n - 1) has S = 0.85Electrons in (n - 2) shell has S = 1.00For a 2p chlorine electron;
Chlorine has electron configuration, 1s2 2s2 2p6 3s2 3p5
S = 7(0.35) + 2(0.85) = 2.45 + 1.7 = 4.15
The total nuclear charge of chlorine Z = 17
Zeff = 17 - 4.15
Zeff = 12.85
For the 3p electron;
S = 6(0.35) + 8(0.85) + 2(1.00)
S = 2.1 + 6.8 + 2 = 10.9
Zeff = 17 - 10.9
Zeff = 6.1
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How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layered mixture of?
How many moles of n are in 0.163 g of n2o?
First convert 0.163 grams of N2O to mol by dividing it with the molecular weight. The molecular weight of N2O is 44 grams/mol. The answer would be 3,79x10^-3. Then multiply it with 2 since there are 2 Nitrogen in one mole of N2O. Therefore, there are 7.41x10^-3 moles of Nitrogen.
Answer:
[tex]n_N=7.41x10^{-3}molN[/tex]
Explanation:
Hello,
In this case, one develops the following mass-mole relationship, taking into account that [tex]N_2O[/tex] has two nitrogens inside, thus:
[tex]n_N=0.163gN_2O*\frac{1molN_2O}{44gN_2O}*\frac{2molN}{1molN_2O}\\n_N=7.41x10^{-3}molN[/tex]
Best regards.
Use appropriate metric prefixes to write the following measurement without use of exponents 15.7 x 10^3g
Cracking the periodic table code why aren't the elements listed in alphabetical order answer key
The elements in the periodice table are not listed in alphabetical order, because the arragement in rows (periods) and columns (groups or familes), in increasing order of atomic number (number of protons of the atoms) permits to explain similarities among the elements, trend in some properties, and even predict properties of unknown elements.
For example, the elements of the first group (family), called alkaline metals, all have 1 valence electron, have similar physical properties (ductibility, malleability, luster, thermal and electricity conductivity), react in similar way with water, show a trend in the atomic radii and in the ionization energy.
You can tell similar stories for other groups like, alkalyne earth metals, halogens and noble gases.
You can also tell trends in electroneativities, and atomic radii, for a row of elements, as per the order they are in the row.
So, the current array resulted very helpul for chemists to explain and predict the behavior and properties of the elements.
The periodic table of elements is organized based on chemical properties and atomic structure, not in alphabetical order. Elements are arranged in ascending order of their atomic numbers, and elements in the same group have similar chemical properties.
Explanation:The elements on the periodic table are not listed in alphabetical order, but instead they are organized based on their chemical properties and atomic structure. This organization makes it easier to understand and predict how different elements will react with each other. The elements are arranged in ascending order based on their atomic number, which is the number of protons in an atom's nucleus. Elements in the same group (vertical column) have similar chemical properties because they have the same number of electrons in their outer shell.
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How many molecules are in 2.50 moles of SO2
Every compound or element has a fixed number of molecules per mole. This is given by the Avogadros number which is about 6.022 x 10^23 molecules per mole. Therefore:
molecules = 2.50 moles * (6.022 x 10^23 molecules / mole)
molecules = 1.5055 x 10^24 molecules of SO2
Final answer:
To find the number of molecules in 2.50 moles of sulfur dioxide (SO₂), multiply 2.50 moles by Avogadro's number (6.022 x 10²³ molecules/mole), resulting in 1.506 x 10²⁴ molecules of SO₂.
Explanation:
The question of how many molecules are in 2.50 moles of SO₂ (sulfur dioxide) can be answered by using Avogadro's number, which is a key concept in chemistry. Avogadro's number (6.022 × 10²³) represents the number of entities, in this case, molecules, in one mole of a substance.
Therefore, to find out how many molecules are present in 2.50 moles of SO₂, we multiply the moles of SO₂ by Avogadro's number.
2.50 moles of SO₂ × 6.022 × 10²³ molecules/mole = 1.506 × 10²⁴ molecules of SO₂.
Using the mass of the proton 1.0073 amu and assuming its diameter is 1.0×10−15m, calculate the density of a proton in g/cm3.
Answer : [tex] 3.2 X 10^{15} g/cm^{3} [/tex]
Explanation : To convert amu i.e. atomic mass unit in grams we have the conversion factor as 1 amu = [tex] 1.66054 X 10^{-24} g [/tex]
we know the mass of the proton is 1.0073 amu
So converting it into grams we have to multiply;
1.0073 amu X [tex] 1.66054 X 10^{-24} g/amu [/tex] = [tex] 1.673 X 10^{-24} g [/tex]
Now, Volume = 1/6πd³ as diameter is given as [tex] 1.0 X 10^{-15} m [/tex] converting it to cm will require to multiply with 100
∴ Volume = 1/6π [tex](1.0 X 10^{-15}mX 100 cm / 1 m)^{3} [/tex]
Hence, volume = [tex] 5.236 X 10^{-40} cm^{3} [/tex]
Therefore, Density = mass / volume
∴ Density = [tex] 1.673 X 10^{-24} g / 5.236 X 10^{-40} cm^{3} [/tex]
Therefore, Density will be [tex] 3.2 X 10^{15} g/cm^{3} [/tex].
The density of a proton in g / cm₃ = 3.19.10⁻¹⁵
Further explanationAtoms are composed of 3 types of basic particles namely protons, electrons, and neutrons
the mass of the basic particle is expressed in units of atomic mass
This atomic unit uses the standard atomic mass, that is, the C-12 isotope
1 atom C-12 = 12 atomic mass units
1 atomic mass unit = 1/12 x mass 1 C-12 atom
1 unit of atomic mass = 1.66.10 ⁻²⁴ g
the basic particle mass in atomic mass units is:
electron mass = 9.11.10⁻²⁸ g
proton mass = 1.6726.10⁻²⁴ g
neutron mass = 1,675.10⁻²⁴ g
The proton mass is considered to be equal to 1 atomic mass unit and is also considered to be equal to 1 atomic mass unit
1 unit of atomic mass = 1.6726.10⁻²⁴ g = 1.6726.10⁻²⁷kg
Density is a quantity derived from the mass and volume
density is the ratio of mass per unit volume
The unit of density can be expressed in g / cm³ or kg / m3³
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Assume protons as spheres
with a diameter of 1.0 × 10⁻¹⁵m = 1.0.10⁻¹³ cm
then the volume = 4/3 π r³ or 1/6πd³
proton volume = 1 / 6π(1.0 × 10⁻¹³)³
proton volume = 5.23.10⁻⁴⁰
density becomes:
density = mass: volume
density = 1.6726.10⁻²⁴: 5.23.10⁻⁴⁰
density = 3.19.10⁻¹⁵ g/cm³
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How many xenon atoms are contained in 2.36 moles of xenon? 3.92 x 1024 xenon atoms 2.55 x 1023 xenon atoms 1.42 x 1024 xenon atoms 7.91 x 1025 xenon atoms 1.87 x 1026 xenon atoms?
The number of atoms can be calculated by multiplying the number of moles with the Avogadros number. The Avogadros number is 6.022 x 10^23 atoms / moles, therefore:
number of atoms = 2.36 moles * 6.022 x 10^23 atoms / mole
number of atoms = 1.42 x 10^24 atoms
Answer:
1.42 x 10^24 xenon atoms
Answer:
c
Explanation:
because its c
Indicate which reaction will occur faster. explain your reasoning. select the single best answer. solvolysis of 1−chloro−2,2−dimethylpropane or tert−butyl chloride in ethanol
The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol due to the greater stability of the resulting carbocation.
Explanation:The solvolysis of 1−chloro−2,2−dimethylpropane (also known as tert-butyl chloride) will occur faster than the reaction of tert-butyl chloride in ethanol. The reason is because 1-chloro-2,2-dimethylpropane is a tertiary alkyl halide, which means it has a highly substituted carbon atom attached to the halide. This high substitution stabilizes the transition state via hyperconjugation, thereby significantly accelerating solvolysis.
This implies that the rate of reaction is directly proportional to the stability of the carbocation formed during solvolysis; tertiary carbocations are more stable than secondary ones due to hyperconjugation and inductive effect. Therefore, tertiary halides undergo solvolysis more readily than secondary halides.
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What is the maximum height at which the solvent should condense (in the condenser) during reflux? What might happen if the solvent condenses higher than this?
During buildup in reflux condenser, the greatest tallness is most of the way up to the condenser. In the event that dissolvable gathers higher than this most extreme tallness, the majority of the dissolvable may keep running over into the response cup or might be the response will begin prior, And if the dissolvable don't go up than the greatest stature, the response does not occur to begin prior.
Further Explanation:
Reflux:
Heartburn is otherwise called acid reflux, corrosive acid reflux, or pyrosis. It happens when a portion of the acidic stomach substance return up into the throat. Heartburn makes a consuming agony in the lower chest zone, frequently in the wake of eating.
reason for a reflux device:
Reflux is a procedure including the buildup of vapors and the arrival of this condensate to the framework from which it began. It is utilized in mechanical and research center refining processes. It is likewise utilized in science to supply vitality to responses over an extensive stretch of time.
Reflux is utilized:
To keep the dissolvable from dissipating, a reflux condenser is utilized. This is a glass segment with a subsequent segment encompassing it through which cool water streams. As vapor from the bubbling dissolvable ascents into inside section of the reflux condenser, it is cooled by the coat of water outwardly and consolidates.
Subject: chemistry
Level: college
Keywords: Reflux, reason for a reflux device, Reflux is utilized.
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Any proposed solution of a rational equation that causes a denominator to equal _______ is rejected.
Any rational equation that the denominator is equal to zero will be rejected. The denominator of the rational equation must never be equal to zero. These are called Extraneous Roots and this must be rejected. The extraneous roots appear when we are solving an equation in a perfectly correct way, because certain operations have more than one solution.
Which action is not an example of work