How many grams of potassium chloride must decompose to produce 69.9 milliliters of potassium metal, if the density of potassium is 1.78 g/mL? Show all steps of your calculation as well as the final answer.

KCl → K + Cl2
please help !!!!

Question

How many grams of potassium chloride must decompose to produce 69.9 milliliters of potassium metal, if the density of potassium is 1.78 g/mL? Show all steps of your calculation as well as the final answer. 

KCl → K + Cl2
please help !!!!

anonymous · Answer

$$d=\frac{ m }{ v }$$
d=density
m=mass
v=volume

anonymous · Answer

$$m=dv$$
$$m=1.78\frac{ g }{ mL } \times 69.9mL$$
$$m=124.422g$$