i really just don't understand how to do these problems :/

i really just don't understand how to do these problems :/

Chemistry lab i need help with and need the answer a)14.18 g b)22.99 g c)24.31 g d) 28.37 g and help would be greatly appriciated thank uou so so much ...

I really need to know the answer and the work shown

1.Converting 1.22g of O2 to moles? 2.Converting 1.05g of H2 to moles?

How to complete a stoichiometry graph using :actual yield, mole ratio, theoretical yield, balanced chemical reactions, percentage, percentage yield

I really don't know how to do it I've tired and tried. I know how to balance, I have consistantly practiced but am getting no where. How many moles of O2 are needed to oxidize 6.71 moles of CuFeS2...

Al+S8 -->Al2S3 -How many moles of aluminum are required to produce 56.9 grams of sulfur? -5.0 grams of aluminum sulfide is needed. How many grams of sulfur is required to make...

A student heats magnesium to produce magnesium oxide. the reaction is below: Mg + O2 MgO She starts wih 3.45 grams of magnesium and produces 5.65 grams of magnesium oxide...

A student calculates the theoretical yield of their experiment is 4.89 grams. After carrying out the experiment, they only produced 4.21 grams of product in the lab. Calculate the percent yield &...

how do I calculate how many miles of CO are needed to react with 48.5 grams of Fe2O3?

What is the theoretical yield of CuO? -Experimental yield of Copper II oxide-1.4 -Equation-CuCO3.Cu(OH)2 -->CuO + CO2+H2O

CuCO3.Cu(OH)2--> CO2+H2O+2CuO How many grams of Copper II oxide are produced if you start with 1.01 g of Copper II carbonate.

CuCO3 . Cu(OH)2 --> CO2+H2O + 2CuO How many grams of Copper II oxide are produced if you start wit 1.01 g of Copper II carbonate?

C2H4 + O2 → CO2 + H2O -If you start with 45 grams of ethylene (C2H4), how many grams of carbon dioxide should be produced? -Theoretically, how many liters of carbon dioxide will...

A solution of 25.0 grams potassium chromate reacts with a solution of 33.0 grams lead (||) nitrate to produce a yellow precipitate of lead(||) chromate and a solution of potassium nitrate. What is...

Mg + NaF → MgF2 + Na -If you start with 5.5 grams of sodium fluoride, how many grams of magnesium fluoride will be produced if there is no error? -Determine how many formula units...

HCl + Na2SO4 → NaCl + H2SO4 -If you start with 20.0 grams of hydrochloric acid, how many grams of sulfuric acid will be produced assuming there is 0% error? -How many moles of...

LiOH + HBr → LiBr + H2O -If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will theoretically be produced? -How many water molecules will you produce...

A student carries out the following reaction two times in the lab: 2 AlBr3 + 3 K2SO4 --> 6 KBr + 1 Al2(SO4)3 --During her first trial, she measures the amount of aluminum...

What is the theoretical yield of CuO? -Experimental yield of Copper II oxide-1.4 -Equation-CuCO3.Cu(OH)2 -->CuO + CO2+H2O

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