Question

1) (1 point) You are following a recipe that calls for 1 egg and 1/3 cup of oil for every cup of flour. In the refrigerator you find that you have 3 eggs and 1 cup of oil, how much flour will you need to use all of the eggs and oil? *
1 cup
2 cups
3 cups
4 cups

Answer 1

1) (1 point) You are following a recipe that calls for 1 egg and 1/3 cup of oil for every cup of flour. In the refrigerator you find that you have 3 eggs and 1 cup of oil, how much flour will you need to use all of the eggs and oil? *
1 cup
2 cups
3 cups
4 cups
2) (1 point) In any chemical reaction the quantities that are preserved are _____. *
mass and moles
the number of molecules and the volumes
the number of moles and the volumes
mass and number of atoms
3) (1 point) How many moles of aluminum are needed to react with 2.7 mol of FeO? 2Al(s) + 3FeO(s) → 3Fe(s) +Al₂O₃(s) *
1.8 mol
2.1 mol
2.7 mol
5.4 mol
4) (1 point) Which type of stoichiometric calculation does not require you to use the molar mass? *
volume – volume problems
mass – particle problems
mass – mass problems
mass – volume problems