What is the percent by mass of hydrogen in CH3COOH (formula mass = 60.)? A) 7.1%
B) 5.0%
C)6.7%
D)1.7%
15 points pls answer quick it's timed I don't need explanation

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

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