A student determines the volume of a rock is 12.3mL, but the rock is actually 12.5mL. What is the percent error? Select the BEST answer.

1.6%

Explanation:

12.5 ml - 100%

12.3 ml - x %

x = (12.3*100)/12.5

x = 98.4%

Error = 100 - 98.4 = 1.6%

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.