Exam Review 3 Bonanza!!!

Random

100

What charge is group 1A?

1+

200

Is HS^- an ion, a covalent compound, or ionic compound? 

Ion (polyatomic ion) 

300

Is CO₂ an ion, covalent compound or ionic compound? 

Covalent 

400

Is NH₄Cl a ion, covalent compound or ionic compound?

Ionic

500

What is the charge of Cr in Chromium(VI) phosphate and what is its chemical formula?

Cr^6- --> Cr(PO₄)₂

Formular Mass & Mole to Mole

100

Identify the correct formula for phosphorus pentafluoride and calculate its formula mass (amu)

PF₅ → 125.97 amu

200

Identify the correct formula for nitrous acid and calculate its formula mass (amu)

HNO₂ → 47.02 amu

300

What is the molar mass of lead selenide? Include units

286.2 g/mol PbSe

400

A sample of 156 moles of Ca₃(AsO₂)₂ contains how many moles of oxygen?

624 mol O

500

A sample of 773 moles of barium bromate contains how many moles of oxygen? 

4.64 x 10³ mol Ba(BrO₃)₂

Moles

100

How many atoms are in 22.9 mol Hg?

1.38 x 10²⁵ atoms Hg

200

How many atoms are in 3.4 mol Cu? 

2.0 x 10²⁴ atoms Cu

300

How many moles of sodium atoms are in a pure sodium sample with a mass of 38.1 g?

1.66 mol Na

400

How many grams of arsenic are in a pure arsenic sample that contains 0.145 mol?

10.9 g As

500

How many grams of ammonium hydroxide are in a pure sample that contains 1.61 mol ammonium hydroxide?

56.4 g NH₄OH

Acids

100

What is the name of the acid, H₂S?

Hydrosulfuric acid 

200

What is the chemical formula for Nitric acid?

HNO₃ (aq)

300

What is the chemical formula for carbonic acid?

H₂CO₃ (aq)

400

What is the name of the acid, HClO₄ (aq)?

Perchloric acid 

500

What is the chemical formula for hypophophorous acid? 

H₃PO₂ (aq)

Compounds/Molecules

100

What is the chemical name of NaF?

sodium fluoride 

200

What is the name of BBr₃?

Boron tribromide 

300

What is the chemical formula for iron(III) bromide?

FeBr₃

400

What is the chemical name for Ni(BrO₄)₄? 

nickel(IV) perbromate

500

What is the formula for mercury(II) bicarbonate?

Hg(HCO₃)₂