Concept explainers
(a)
Interpretation:
In the pair of
(a)
Explanation of Solution
Sample containing
(b)
Interpretation:
In the pair of 1 molecule
(b)
Explanation of Solution
Sample containing
(c)
Interpretation:
In the pair of 1 nitrogen atom or 1 nitrogen molecule the one which have greater number of atoms has to be given.
(c)
Explanation of Solution
Sample containing 1 nitrogen molecule (
(d)
Interpretation:
In the pair of
(d)
Explanation of Solution
Sample containing
(e)
Interpretation:
In the pair of
(e)
Explanation of Solution
The molar mass of
(f)
Interpretation:
In the pair of
(f)
Explanation of Solution
The molar mass of bromine is
(g)
Interpretation:
In the pair of
(g)
Explanation of Solution
The molar mass of silver is
(h)
Interpretation:
In the pair of
(h)
Explanation of Solution
The molar mass of
(i)
Interpretation:
In the pair of
(i)
Explanation of Solution
The sample containing
(j)
Interpretation:
In the pair of
(j)
Explanation of Solution
Since chlorine atoms all weigh the same, so two samples with identical mass containing chlorine must have the same number of chlorine atoms. The molar mass of
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Chapter 2 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
- By x-ray diffraction it is possible to determine the geometric pattern in which atoms are arranged in a crystal and the distances between atoms. In a crystal of silver, four atoms effectively occupy the volume of a cube 0.409 nm on an edge. Taking the density of silver to be 10.5 g/cm3, calculate the number of atoms in one mole of silver.arrow_forwardComplete the following table for TNT (trinitrotoluene), C7H5(NO2)3.arrow_forwardA compound associated with the odor of garlic on a persons breath has the chemical formula CyH8S and a formula mass of 88.19 amu. What number does y stand for in the chemical formula of the compound?arrow_forward
- The compound 1-propanethiol, which is the eye irritant released when fresh onions are chopped up, has the chemical formula C3HyS and a formula mass of 76.18 amu. What number does y stand for in the chemical formula of the compound?arrow_forwardDetermine (a) the number of atoms in 0.185 g of palladium (Pd). (b) the mass of 127 protons of palladium.arrow_forwardWhat is the total mass (amu) of carbon in each of the following molecules? CH4 CHCl3 C12H12O6 CH3CH2CH2CH2CH3arrow_forward
- Determine the molecular mass of the following compounds:arrow_forwardChlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?arrow_forwardDetermine the empirical formula of each of the following compounds. (Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.) (a) 0.063 mol chlorine atoms combined with 0.22 mol oxygen atoms(b) 2.45 g silicon combined with 12.4 g chlorine(c) 42.9 mass % carbon and 57.1 mass % oxygenarrow_forward
- Which sample contains the greatest number of atoms? (a) 15 g Ne (b) 15 g Ar (c) 15 g Kr (d) None of the above (all contain the same number of atoms).arrow_forwardA compound is decomposed in the laboratory and produces 1.40 g N and 0.20 g H. What is the empirical formula of the compound? (a) NΗ (c) NH2 (b) N¿H ( d) N/Ηarrow_forward(a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper metal.(b) Determine the number of moles of helium that has the same mass as 4.505 moles of neon.arrow_forward
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