Molarity
How many mL of 3.5M HCl contain 1.21 x 10-3 moles?
0.35 mL
If the following equation is balanced, what is the coefficient in front of Al?
Al2O3 --> Al + O2
4
4Fe + 3O2 --> 2Fe2O3
399.25 g
How many mL of 1.6M HCl is needed to make 500 mL of 0.38M HCl?
118.75 mL
If the following equation is balanced, what is the coefficient in front of AlCl3?
AlBr3 + Cl2 --> AlCl3 + Br2
2
If 308 g of rust (159.7 g/mole) are formed, how many grams of oxygen (32 g/mole) reacted with excess iron?
4Fe + 3O2 --> 2Fe2O3
92.6 g
Describe how you would prepare 150 mL of a 5.4M NaOH solution using a stock bottle a concentration of 12.0 M.
Take 67.5 mL of the stock solution and dilute with water to 150 mL.
If the following equation is balanced, what is the coefficient of O2?
S8 + O2 --> SO2
8
If 5850 g of Bi2O3 (466 g/mole) react with 415 g of C (12 g/mole), how many moles of CO (28 g/mole) are formed?
Bi2O3 + 3C --> 2Bi + 3CO
968.3 g CO
How would you make 150 mL of a 5.4M solution of NaOH using solid NaOH?
Dissolve 32.4g of NaOH in 150 mL of water.
If the following equation in balanced, what is the sum of all the coefficients?
P4 + O2 --> P2O5
8
If 5850 g Bi2O3 (466 g/mole) and 415 g C (12 g/mole) form 34.6 moles of CO, how many grams of excess reactant are left?
Bi2O3 + 3C --> 2Bi + 3CO
475.47 g Bi2O3
How many mL of 2.25M HF are needed to react if 3.891 kg of UF4 (314 g/mole) form?
UO2 + 4HF --> UF4 + 2H2O
22029.72 mL
When the following equation is balanced, what is the sum of all the coefficients?
Al2(SO4)3 + Ca(OH)2 --> Al(OH)3 + CaSO4
9
*discussion*