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Nomenclature
Sig. Figs.
Conversion
Solubility
Write the Ionic Compound Formed
100

NaCl

Sodium Chloride 

100

How many sig. figs. are in 760

2 significant digits

100

What many grams are in 1 mol of Oxygen?

molar mass O = 16.00 g/mol

16.00g 

100

Is LiCl soluble?

YES 

Group 1 element + chlorides (Cl-) are soluble

100

Lithium Ion + Chloride Ion 

Li+ + Cl- = 

LiCl

200

Ba(SO4)

Barium Sulfate 

200

How many sig. figs. are in 0.0320

There are 3 significant digits

200

How many mol are in 12.01g of Carbon?

molar mass C = 12.01 g/mol

1 mol Carbon

200

Is NaNO3 soluble? 

YES 

Group 1 element + nitrates (NO3-) are soluble 

200

Rubidium Ion + Cyanide 

Rb+ + CN- =

RbCN

300

P4O10

tetraphosphorus decoxide 

300

How many significant digits are in 670.

3 significant digits 

300

How many mol are in 120.24g of Ca?

Molar mass Ca = 40.08 g/mol

3 mol Ca

300

Is S(NH4)2 soluble?

YES 


ammonium (NH4) compounds are soluble 

300

Potassium + Phosphate 

3K+ + PO43- = 

K3PO4

400

Co(ClO-)2

Cobalt (II) hypochlorite

400

What is the answer (with sig. figs.)?

234.740 + 32.6 = ?

267.3

1 decimal place 

For addition and subtraction, the answer should have the same amount of decimal places as the given value with the least amount of decimal places. 

400

How many mol are in 6.022*1023 molecules of Silicon?

NA: 1 mol = 6.022*1023 atoms/molecules

1 mol of Silicon

400

Is AgCl soluble?

NO 


AgCl is an exception for the Cl- solubility rule

400

Iron (III) + Bromide Ion

Fe3+ + 3Br- =

 FeBr3

500

CH3COONa 

Sodium Acetate 

500

What is the answer (with correct sig. figs.)?

(23.789 + 94.6)/(45.90-12.8) = 


(23.789 + 94.6)/(45.90-12.8) = 

1 decimal places           1 decimal place

118.389/33.10 = 3.577 

1 decimal place, 4 sig. figs. 

3.6 (answer rounded to one decimal place)


500

How many grams are in 4.8176*1024 atoms of Boron?

NA: 1 mol = 6.022*1023 atoms/molecules

(4.8176*1024 atoms/6.022*1023 atoms) = 8 

8 mol B = 10.81 g/mol = 

86.48 g of Boron

500

Is Pb(SO4) soluble?

NO 

 Pb(SO4) is an exception for the solubility of SO42-

500

Sodium Ion + Dichromate 

2Na+ + Cr2O72- =

Na2Cr2O7