PERIOD 5

(Ayanna)

  1. Aluminum and silver sulfide react to form silver and aluminum sulfide. Write the balanced equation.
  2. How many moles in a 25.0g sample of FeSO4?

(Sophia)

  1. What mass of hydrogen is needed to form 15.83g of water?
  2. How many moles of NH3 can be produced from 12.0g of nitrogen?
  3. How many moles of hydrogen are needed to react with 4.80g of nitrogen?

(Olivia)

  1. A solid mass of 25g is mixed with 60g of a solution. A chemical reaction takes place and a gas is produced. The final mass of the mixture is 75g. What is the mass of the gas released?
  2. How many grams does 0.50 moles of copper (I) bromide weigh?

(Chris)

  1. Lead (II) hydroxide reacts with hydrogen monochloride to form water and lead (II) chloride. There are 2.00 moles of each reactant available.

a. balance equation

b. limiting reactant

c. moles of water formed

  1. Rubidium nitrate and beryllium fluoride react to from beryllium nitrate and rubidium fluoride. There are 10.5g rubidium nitrate and 48.0g beryllium fluoride.

a. balance equation

b. limiting reactant

c. mass of rubidium fluoride produced

(Michaela)

  1. For the balanced equation shown below, how many grams of H2O will be produced by 315grams of O2?2 C4H8O+11 O2 8 CO2+8 H2O
  2. For the balanced equation shown below, how many grams of H2S reacted, if 1680grams of HCl are produced? 2BiCl3+3H2S  Bi2S3+6HCl

(Wil)

  1. How many grams are there in 3.4 moles of NH3?
  2. How much does 4.2 moles of Ca(NO3)2 weigh?

(McKayla)

  1. Rubidium nitrate and beryllium fluoride react to form beryllium nitrate and rubidium fluoride. There are 10.5g rubidium nitrate and 48.0g beryllium fluoride.

a) balance the equation

b) limiting reactant

c) mass of rubidium fluoride produced

  1. Completing nuclear decay equations:

23992U +42He → _____ +10n

(Tiarah)

  1. In an acetylene torch, acetylene gas burns in oxygen to produce carbon dioxide and water. If in a reaction, 3.54mol acetylene are used. Using this balanced equation: 2C2H2+ 5O2→4CO2+2H2O, how many moles of oxygen are needed?
  2. Iron (III) oxide reacts with carbon to form iron and carbon dioxide. Assume 2.80mol of iron (III) oxide react. Using this balanced equation: Fe2O3+ 3C → 2Fe + 3CO, how many grams of iron are produced?

(Mal)

  1. In the formation of carbon dioxide from carbon monoxide and oxygen, how many moles of carbon monoxide are needed to react completely with 7.0 moles of oxygen gas.
  2. How many moles of oxygen are required to burn 0.5 moles of ethane gas, C2H6? 2 C2H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H2O

(Tessa)

  1. If 20.3 moles of carbon dioxide are produced according to the reaction: C3H8 + 5O2--> 3CO2 + 4H2O. What mass of oxygen reacted?
  2. Methane, or carbon tetrahydride, combusts in oxygen to form water and carbon dioxide. What mass of water forms if 33.94g of oxygen are consumed?

(Lauren)

  1. How many moles are in 5.12 grams of aluminum?
  2. Ammonia and fluorine react to form dinitrogentetrafluoride and hydrogen monofluoride. If 5.00 grams of NH3 and 20.0 grams F2 react, how many grams of hydrogen monofluoride are produced?
  3. Balance the chemical equation
  4. Limiting reactant
  5. Mass of hydrogen monofluoride produced

(Alex)

  1. Calculate the mass, in grams, of 5.12 mol of aluminum
  2. Calculate the mass, in grams, of 3.52 mol of MgBr2

(Denise)

  1. Find the mass of .057 mol Na2CO3
  2. Find the number of moles in 33 grams of NH3.