Jeopardy

Atomic Structure/dimensional analysis

Nomenclature

Formula calculations and moles

Stoichiometry

100

What is the classification of sulfur

-metal

-metalloid

-semiconductor

-nonmetal

nonmetal

100

What is the correct name for N₂O₅?

A. nitrogen(II) oxide

B. dinitrogen oxide

C. nitrogen(V) oxide

D. dinitrogen pentoxide

100

How many moles of hydrogen atoms are in six moles of Ca(OH)₂

A. 2

B. 6

C. 8

D. 12

100

What are the smallest whole number coefiicients for each substance (respectively) in the chemical equation when balanced?

AgI+Na₂S yields Ag₂S+NaI

A. 1, 0.5, 0.5, 1

B. 2,1,1,2

C. 2,3,3,2

D. 4,2,2,4

B. 2,1,1,2

200

Which term best describes the relation of hydrogen (¹H) to deuterium (²H)?

-allotropes

-isomers

-iostopes

-polymers

isotopes

200

What is the formula for hydroiodic acid?

A. HI

B. HIO

C. HIO₂

D. HIO₃

A. HI

200

A 4.08 g sample of a compound of nitrogen and oxygen contains 3.02 g of oxygen. What is the empirical fomrula?

A. NO₂

B. NO₃

C. N₃O₂

D. N₂O₅

200

What is the mass (in g) of ammonia (NH₃) necessary to preoduce 0.340 mol NO in the presence of excess oxygen?

4NH₃+5O₂ yields 4NO+6H₂O

A. 1.45 g

B. 5.21 g

C. 5.79 g

10.2 g

C.5.79

300

A sodium ion differs from a sodium atom in that the sodium ion

- has fewer electrons

- is and isotope of sodium

-exists only in solution

-has a negative charge on its nucleus

Has fewer electrons

300

The formula of strontium hexafluorosilicate is SrSiF₆. What is the formula of aluminum hexafluorosilicate

A. AlSiF₆

B. Al₂(SiF₆)₃

C. Al₃SiF₆

D. Al₃(SiF₆)₂

B. Al₂(SiF₆)₃

300

What is the mass percent of oxygen in K₂CO₃? (molar mass of K₂CO₃=138.2 g/mol)

A. 11.58%

B. 23.15%

C. 34.73%

D. 69.46%

C. 34.73%

300

What amount of excess reagent remains when 4.0 g zinc react with 2.0 g phosphorous (P=30.97 g/mol, Zn=65.39 g/mol, Zn₃P₂=258.1 g/mol)

3Zn+2P yields Zn₃P₂

A. 0.70 g P

B. 1.3 g P

C. 0.22 g Zn

D. 4.2 g Zn

A. 0.70 g

400

Which element is an actinide

- Rb

-U

-Mo

-Ga

400

Which is not named correctly?

A. MnO₂ manganese(II) oxide

B. CuSO₄ copper(II) sulfate

C. Na₃PO₄ sodium phosphate

D. CaF₂ calcium fluoride

A. MnO₂ manganese(II) oxide

--What should it be named (100 pts)

400

A molecular compound is found to consist 30.4% nitrogen and 69.6% oxygen. If the molecule contains 2 atoms of nitrogen, what is the molar mass of the molecule?

A. 46 g/mol

B. 92 g/mol

C. 154 g/mol

D. 168 g/mol

B. 92 g/mol

500

Which atom has the most neutrons?

A. neon-20

B. phosphorous-32

C. chlorine-35

D. sulfur-35

500

A sample of a compound of xenon and fluorine contains molecules of a single type; XeF_n, where n is whole number. If 9.03x10²⁰ of these XeF_n molecules have a mass of 0.311 g, what is the value of n?

A. 2

B. 3

C. 4

D. 6

C. 4