Mole And Stoichiometry Review Question Preview (ID: 41276)


Follows All TEKS. TEACHERS: click here for quick copy question ID numbers.

What is the coefficient for potassium in the balanced equation: ___Na + ___K2S — ___K + ___Na2S
a) 2
b) 4
c) 6
d) 8

For the reaction ___HCl + ___NaOH — ___NaCl + ___H2O, which is the limiting reactant given 100.0 g of sodium hydroxide and 100.0 g of hydrochloric acid?
a) hydrochloric acid
b) sodium hydroxide
c) sodium chloride
d) water

In the reaction A + B — C + D, if element B is the excess, then —
a) A is the limiting reactant
b) B is the limiting reactant
c) C is the limiting reactant
d) A, B, and C are all limiting reactants

In the reaction __RbNO3 — ___RbNO2 + ___O2, how many moles of O2 are produced when 5.0 mol of RbNO3 decompose?
a) 1.0 mol
b) 2.5 mol
c) 3.0 mol
d) 7.5 mol

In the reaction ___H2 + __O2 — ___H2O, How many moles of oxygen are required to fully react with 6.0 mol of hydrogen?
a) 3.0 mol
b) 6.0 mol
c) 12.0 mol
d) 18.0 mol

Calculate the number of molecules present in .20 mols of H2O.
a) 2.9 x 10 to the power of 25 molecules
b) 5.1 x 10 to the power of 22 molecules
c) 1.2 x 10 to the power of 23 molecules
d) 2.4 x 10 to the power of 23 molecules

The sum of the atomic masses of all the atoms in a formula for a covalent compound is the—
a) real mass
b) formula mas
c) Avogadros number
d) molecular mass

How many grams of NaCl are preset in 11.00 moles?
a) 0.4500 g
b) 156.6 g
c) 331.0 g
d) 642.9 g

What is the molecular mass of MgSO4?
a) 116.13 amu
b) 272.83 amu
c) 111.21 amu
d) 120.37 amu

A molecule has been identified to contain 40.9% carbon, 4.58% hydrogen, and 54.5% oxygen. What is the empirical formula for the compound?
a) CHO
b) C3H4O3
c) CH2O
d) C10HO12

Calcium hydroxide and hydrochloric acid react to form calcium chloride and water. If the chemicals are present in exactly the correct ratios to fully use all of the ingredients, how many moles of water can be formed from 5 moles of hydrochloric acid?
a) 1 mole
b) 2 moles
c) 5 moles
d) 10 moles

How many moles are in 75.0 grams of nitrogen gas?
a) 3.00 moles
b) 0.333 moles
c) 2.68 moles
d) 4.52 x 10 to the power of 25 moles

In the reaction __H2 + ___O2 — ___H2O, what is the mole ratio of hydrogen to water?
a) 2:2
b) 2:1
c) 1:2
d) 4:4

How many moles of CO2 are present in 200.0 g?
a) .22 mol
b) 4.54 mol
c) 9.08 mol
d) 88.02 mol

A three mole sample of K2S would have how many atoms of potassium?
a) 2.01 x 10 to the power of 23
b) 1.21 x 10 to the power of 24
c) 1.81 x 10 to the power of 24
d) 3.62 x 10 to the power of 24

if a sample contained 3.01 x 10 to the 23rd power atoms of tellurium, how many grams would this be?
a) 63. 8 g
b) 127.6 g
c) 255.2 g
d) 382.8 g

How many moles are there in a sample containing 2.408 x 10 to the 24th power atoms of carbon?
a) 2.000
b) 4.000
c) 6.000
d) 12.00

___Cu2S + ___O2 — ___Cu2O + ___SO2 What is the greatest mass of SO2 that can be produced from 15 mol Cu2S?
a) 480 g SO2
b) 721 g SO2
c) 961 g SO2
d) 1920 g SO2

___CaCO3 + ___HCl — ____CO2 + ___H2O this equation was used to find that only 100 g of CO2 was produced. If 200 g of HCl were used to begin the reaction, what is the percent yield?
a) 82.8%
b) 87.6%
c) 96.3%
d) 100%

What is the definition of the limiting reagent?
a) The smallest value for the product
b) The largest value for the product
c) The reactant that produces the smallest amount of product
d) The reaction that produces the larges amount of product

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 41276 in the upper right hand corner or click here.

TEACHERS / EDUCATORS
Log In | Sign Up / Register

Help / Support / FAQ




Gaming Links