Anyone got dc? if so drop it mby?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

What substance has a mass of 9.5g and volume of 2.1cm^3

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h