Ch. 0 Review Jeopardy #2

Molar Mass

100

When calculating molar mass, the unit will be.

What is grams/mole?

200

What is the molar mass of MgO?

What is 40.31 g.

300

What is the molar mass of H2O?

What is 18.02 g.

400

What is the molar mass of Be(NO2)2?

What is 101.03 g.

500

What is the molar mass of Mg3(PO3)2?

What is 230.87 g.

Molar Conversions

100

To determine number of moles from grams, you must use this conversion factor.

What is molar mass.

200

When I have parentheses in my compound, what do I do with the subscript on the outside?

What is multiply by the inside subscripts.

300

How many moles are in 15 grams of lithium

2.14 moles Li

400

How many molecules are in 3.4 grams of Ammonium Sulfite?

1.69 x 10^22 molecules

500

How many molecules are in 200 grams of Carbon tetrachloride?

7.82 x 10^23 molecules

Balancing Equations

100

__ AgCl  +  __ K2CO3    --> __ Ag2CO3 + __ KCl

_2_ AgCl  +  __ K2CO3    --> __ Ag2CO3 + _2_ KCl

200

__ C₃H₈ + __ O₂ → __ H₂O + __ CO₂

__ C₃H₈ + _5_ O₂ → _4_ H₂O + _3_ CO₂

300

__ ZnCl₂  +  __ KOH    --> __ Zn(OH)₂ + __ KCl

_ ZnCl2  +  _2_ KOH    --> __ Zn(OH)2 + _2_ KCl

400

What is wrong with the following 

_2_ C6H14 + _15_ O2 → _7_ H2O + _12_ CO2

Oxygens are not balanced

500

__ Ca₃(PO₄)₂ + __ Li →  __ Li₃PO₄   + __ Ca

__ Ca₃(PO₄)₂ + _6_ Li →  _2_ Li₃PO₄   + _3_ Ca

Single Step Conversions

100

What fraction will you use to convert from moles to atoms/ molecules?

What is Avagadro's Number/ 6.02*10^23 particles/ 1 mole.

200

The mole refers to the _________________ of a substance.

What is the amount.

300

What is the only conversions I need to calculate the molar mass for?

What is moles to mass or mass to moles.

400

How many moles are in 2 x 10^25 atoms of Water?

What is 30 moles.

500

How many moles are in 5.860 grams of water?

What is 0.3252 moles.

Multistep Conversions

100

When doing conversions, what number do you always write out first?

What is the number given in the problem?

200

When doing multistep conversions what two fractions do you use when going from atoms to grams?

What is 1 mole/6.02 x 10^23 and molar mass/1 mole?

300

How many atoms are in 4.65 grams of H2?

What is 1.39*10^24 atoms.

400

How many grams of AlN are in 3.21 x 10^18 particles?

What is 0.000219 grams./2.19*10^-4 grams

500

How many particles are in 34.5 grams of Na2S?

What is 2.66 x 10^23 particles.