Limiting Reagent Problems

H$_2$SO$_4$ + 2 KOH $\longrightarrow$ 2 H$_2$O + K$_2$SO$_4$

How many moles of KOH are requred to make 3.0 moles of K$_2$SO$_4$ ?

N$_2$ + 3 H$_2$ $\longrightarrow$ 2 NH$_3$

If 5 moles of N$_2$ react with excess H$_2$ how many moles of NH$_3$ will the reaction yield?

CuCl$_2$ + Zn $\longrightarrow$ ZnCl$_2$ + Cu

20.0 mL of 1.50 M CuCl$_2$ reacts with 3.00 Zn. How many grams of ZnCl$_2$ does the reaction yield?

3 F$_2$ + S $\longrightarrow$ SF$_6$

Sulfur hexafluoride, a very good indicator, is prepared by the reaction of sulfur with elemental fluorine. What mass of SF$_6$ can be produced from the reaction of 150 g of S with 650 g of F$_2$ ?

MM of F$_2$ = 38.00 g/mol

MM of SF$_6$ = 146.06 g/mol