Determine the mass in grams of 7.65 x 1021 atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.)

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

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.

Why are people not able to skip a dive to the deepest part of the ocean