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molar ratio
Formula mass
Mole to Mole
Mole to mass
vocabulary
100

2 H2 + O2---> 2 H2O

What is the molar ratio between H2and O2?

two to one. So this ratio is written as a fraction

is  2/1

100

What is the formula mass for the following: 

AgNO2

153.9

100

Sodium chloride ,NaCl, 

2Na(s) + Cl2 ----> 2NaCl (s)

How many moles of NaCl result from the complete reaction of 3.4 mol of Cl2? Assume that there is more than enough Na. 

6.8 mol NaCl

100

How many moles are in 15 grams of lithium?

2.2 moles Li  

100

How are the terms "molar mass" and "atomic mass" are different from each other 

Molar mass is used to describe thye mass of one mole of a chemical compound , 

atomic mass describes the mass of one mole of an element or the mass of one atom of an element.

200

2 H2 + O2---> 2 H2O

What is the molar ratio between O2and H2O?

one to two. As a fraction, it is:

1/2

200

What is the formula mass for the following:    HgSO4

296.7

200

Water H2O 

O2 (g) + 2H2(g) ----> 2H2O (g)

How many moles of H2O  result from the complete reaction of 24.6mol of O2? Assume that there is more than enough H2

49.2 mol H2O

200

How many grams are in 2.4 moles of sulfur?

77 g Sulfur

200

What unit you use to express the molar mass

grams/mole

300

Following each equation are two requests for

molar ratios from the equation.

1) N2 + 3 H2 ---> 2 NH3

Write the molar ratios for:

N2 to H2 and NH3 to H2

1/3       2/3

300

What is the formula mass of :

K3PO4

212.3

300

Methane CH4 , 

CH4(g) + 2O2 ----> CO2 (g) + 2 H2O(g)

How many moles of Methane if we have 4 moles of O2

2

300

How many grams are in 4.5 moles of sodium fluoride, NaF?

190g NaF

300

define chemical reaction

 is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.

400

2 SO2 + O2 ---> 2 SO3

Write the molar ratios for:

O2 to SO3 and O2 to SO2

1/2           1/2

400

What is the formula mass of the following : 

Fe(NO3)3

241.9

400

How many moles in 28 grams of Co2? 

0.64 mol Co2

400

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?

1.26 moles Al(OH)3

400

mass conservation

states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.

500

4) 4 NH3+ 3 O2 ---> 2 N2 + 6 H2O

Write the molar ratios for

NH3 to N2 and H2O to O2

2/1      2/1