CHEMISTRY 1070 ASSIGNMENT TWO (2)1. Calculate the mass of 500 atoms of iron (Fe).2. What number of Fe atoms and what amount (moles) of Fe atoms are in500.0 g of iron?3. Diamond is a natural form of pure carbon. What number of atoms ofcarbon is in 1.00-carat diamond (1.00 carat = 0.200 g)?4. Calculate the molar mass of the following substances.ONON5. Chloral hydrate (C2H3C1302) is a drug formerly used as a sedative andhypnotic. It is a compound used to make "Mickey Finns" in detectivestories.a. Calculate the molar mass of chloral hydrate.b. What amount (moles) of chloral hydrate molecules are in 500.0gchloral hydrate?c. What is the mass in grams of 2.0 x 10-2mol chloral hydrate?d. What number of chlorine atoms is in 5.0g chloral hydrate?e. What mass of chloral hydrate would contain 1.0g Cl?f. What is the mass of exactly 500 molecules of chloral hydrate?6. Calculate the percentage composition by mass of the followingcompounds that are important starting materials for synthetic polymers.a. C,H,0, (acrylic acid from which acrylic plastics are made)b. C,H,0, (methyl acrylate, from which Plexiglas is made)c. CH,N (acrylonitrile, from which Orlon is made)7. Express the composition of each of the following compounds as the masspercentage of its elements.a. Formaldehyde, CH20b. Glucose, C,H120,c. Acetic acid, HC,H,0,8. Determine the molecular formulas to which the following empiricalformulas and molar masses pertain.a. SNH (188.35 g/mol)b. NPCI, (347.64 g/mol)c. CoC,0, (341.94 g/mol)d. SN (184.32 g/mol)9. A compound that contains only carbon, hydrogen and oxygen is 48.64%C and 8.16% H by mass. What is the empirical formula for this substance?

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Calculate the mass of 500 atoms of iron (Fe).

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

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CHEMISTRY 1070 ASSIGNMENT TWO (2)
1. Calculate the mass of 500 atoms of iron (Fe).
2. What number of Fe atoms and what amount (moles) of Fe atoms are in
500.0 g of iron?
3. Diamond is a natural form of pure carbon. What number of atoms of
carbon is in 1.00-carat diamond (1.00 carat = 0.200 g)?
4. Calculate the molar mass of the following substances.
ON
ON
5. Chloral hydrate (C2H3C1302) is a drug formerly used as a sedative and
hypnotic. It is a compound used to make "Mickey Finns" in detective
stories.
a. Calculate the molar mass of chloral hydrate.
b. What amount (moles) of chloral hydrate molecules are in 500.0g
chloral hydrate?
c. What is the mass in grams of 2.0 x 10-2mol chloral hydrate?
d. What number of chlorine atoms is in 5.0g chloral hydrate?
e. What mass of chloral hydrate would contain 1.0g Cl?
f. What is the mass of exactly 500 molecules of chloral hydrate?
6. Calculate the percentage composition by mass of the following
compounds that are important starting materials for synthetic polymers.
a. C,H,0, (acrylic acid from which acrylic plastics are made)
b. C,H,0, (methyl acrylate, from which Plexiglas is made)
c. CH,N (acrylonitrile, from which Orlon is made)
7. Express the composition of each of the following compounds as the mass
percentage of its elements.
a. Formaldehyde, CH20
b. Glucose, C,H120,
c. Acetic acid, HC,H,0,
8. Determine the molecular formulas to which the following empirical
formulas and molar masses pertain.
a. SNH (188.35 g/mol)
b. NPCI, (347.64 g/mol)
c. CoC,0, (341.94 g/mol)
d. SN (184.32 g/mol)
9. A compound that contains only carbon, hydrogen and oxygen is 48.64%
C and 8.16% H by mass. What is the empirical formula for this substance?

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