8.50g of potassium combines with 7.71g of chlorine to form potassium chloride.What is the percent by mass of chlorine in potassium chloride?
A)52.4%
B)64.8%
C)47.6%
D)60.7%

Question

Quizplus · Accepted Answer

To calculate the percent by mass of chlorine in potassium chloride, we need to find the total mass of potassium chloride and the mass of chlorine in it. The total mass of potassium chloride is:

8.50 g + 7.71 g = 16.21 g

To find the mass of chlorine, we subtract the mass of potassium from the total mass:

16.21 g - 8.50 g = 7.71 g

So, the percent by mass of chlorine in potassium chloride is:

(mass of chlorine / total mass) x 100% = (7.71 g / 16.21 g) x 100% = 47.6%

Therefore, the answer is C, 47.6%.

850g of Potassium Combines with 7