Chem 1 Exam

Which term is described as the percent by mass of any element in a compound?

• hydrate

• molecular formula

• empirical formula

• percent composition

Of the forces listed, which is the strongest?

• covalent

• dipole-dipole

• dispersion

• hydrogen

Which is the correct name for the compound N3O2?

• dinitro trioxide

• nitrogen (II) oxide (III)

• trinitrogen dioxide

• dinitrogen trioxide

Which conversion factor would best fit in the space labeled "B" in this diagram?

• 1/Avagadro's number

• Avogadro's number

• molar mass of substance

• 1/molar mass of substance

Which types of reactions are essentially opposites of one another?

• combustion and synthesis

• single replacement and double replacement

• synthesis and single replacement

• synthesis and decomposition

Which is the correct name for the compound FeCl2?

• Iron Chloride

• Iron (I) Chloride

• Iron (II) Chloride (II)

• Iron (II) Chloride

Which is the formula for the compound disulfur trichloride?

• S6CL

• SCl6

• SCl5

• S2CL3

Which is the correct name for the compound CoCO3?

• Carbon Oxygen Carbonate

• Cobalt (II) Carbonate

• Cobalt Carbonate

• Cobalt Carbonoxide

How many grams are in 1.576 moles of NaCl?

• 113.7 g

• 30.1 g

• 0.033 g

• 92.11 g

What are the correct coefficients when this equation is balanced?

Sb + O2 --> Sb4O6

• 1, 2, 10

• 4, 6, 1

• 4, 3, 1

• 10, 5, 1