NEED HELP PLSSS Compound A has a mass of 20.00 u. Compound B has a mass of 60.00 u. How will the number of molecules in 5.00 g of Compound A compare to the number of molecules in 15.00 g of Compound 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.

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Which change to the system wood cause the freely-moving piston to lower?