If 20.0 g of magnesium react with excess hydrochloric acid, how many grams of magnesium chloride will be produced?
Mg + 2HCl------> MgCl2 + H2
What is 78.4g
100
How many grams are in C2H5OH?
What is 46.08g
100
What is an Empirical Formula?
What is a chemical formula showing the ratio of elements in a compound rather than the total number of atoms
100
Determine the volume in Liters occupied by 0.030 moles of a gas at STP.
What is 0.672L
100
What is a mole?
What is 6.02x 10^23
200
How many grams of aluminum would be required to produce 550g of Fe?
2Al + Fe2O3-----> 2Fe +Al2O3
What is 265.1g
200
What is the percent of composition of nitrogen in AgNO3?
What is 169.8732 g
200
What is the empirical formula of hexane? C6H14?
What is C3H7
200
How many moles of Argon atoms are present in 11.2 L of argon gas at STP.
What is 0.5 mol
200
What is Avogadro's number?
What is a mole or 6.02x 10^23
300
How many grams of sodium hydroxide are needed to completely react with 25.0 g of sulfuric acid in the following reaction?
2NaOH +H2SO4------> Na2SO4 + 2H20
What is 9.19g
300
How do you find the percent composition?
What is you would find the weight of each constituent atom, then figure out what percent of the total molecular weight it makes up.
300
What is the empirical formula for Al2H4?
What is AlH2
300
What is the volume of 1.2 moles of water vapor at STP.
What is 26.9L
300
What is molar mass?
What is the mass of a mole of an element.
400
What mass of oxygen is needed to completely react with 84.9 g of Fe according to the following....
4Fe + O2 ----> 2Fe2O
What is 12.2g
400
What is the percent compositon of C4H2?
What is 50g
400
WHat is the empirical formula for Al4Li6O12?
What is Al2Li3O6
400
How many oxygen molecules are in 3.36 L of oxygen gas at STP?
What is 9.03x10^22 molecules
400
What is Standard Temperature and Pressure or STP?
What is a temperture of 0 degrees C and a pressure of 101.3 kPa, or 1 atmosphere (atm)
500
How many grams of aluminum would react completely with 17.50 grams of copper (II) chloride according to the equation below?
2Al + 3CuCl2 ---> 2AlCl3 + 3Cu
What is 2.34g
500
What is the percent composition of Al3O2H4?
What is 116.94g
500
What is the emirical formula for Ca8Ni10?
What is Ca4Ni5
500
Determine the volume in liters occupied by 14g of nitrogen gas at STP.