How many protons are there in the Mg2+ ion?
A. 6
B. 10
C. 12
D. 20
Question 2
5.0 g of iron is reacted with 5.0 g of water according to the chemical equation shown below. Which one of the following statements is false? 3 Fe(s) + 4 H2O(l) Fe3O4(s) + 4 H2(g)
A) 6.91 g of Fe3O4 are produced.
B) 2.85 g of H2O are left over.
C) Mass is conserved in this reaction.
D) Water is the limiting reactant.
Question 3
A gas is considered ideal if one mole of it in a one-liter container exerts a pressure of exactly 1 atm at room temperature.
Indicate whether the statement is true or false
