What is the change in energy associated with increasing the temperature of 81.7g water from 20°C to 90°C? A. -23,900J
B. 11,6003
C. -11,600J
D. 23,900J

What must happen before a body cell can begin mitotic cell division

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space