Kirby Second Semester Chemistry Review

How many grams are in 4.6 moles of oxygen gas?

• 147 grams

• 73.6 grams

• 0.2875 grams

• 0.144 grams

What is the molar mass of magnesium phosphide?

• 55.28 g/mol

• 134.87 g/mol

• 141.53 g/mol

How many moles is there in 100 grams of CaS?

• 72.13 moles

• 7213 moles

• 0.7213 moles

• 1.38 moles

How many atoms of chlorine gas is in 0.175 moles?

• 6.02 X 10 23

• 1.05 X 10 23

• 2.9 X 10 -25

• 3.44 X 10 24

How many moles of water is in 2.107 X 10 24 molecules?

• 3.5 moles

• 1.27 X 10 48

• 2.87 moles

• 0.286 moles

Acids turn Litmus

• red

• pink

• blue

• clear

Bleach would have a pH

• close to 7

• more than 7

• less than 7

• close to 1

Bases are...

• usually found in food and are sour

• usually found in food and are bitter

• usually found in cleaning products and are bitter

• usually found in cleaning products and are sour

H + or Hydronium Ions H3O+ are

• likely to be an acidic ion

• likely to be a basic ion

• can accept more protons easily

• likely to be neutral

Bases are

• proton donors

• proton acceptors

• Always have OH ions

• not slippery