Question 2.4 . if 250ml of 1.5m ba(oh)2 solution mixes with 250ml of 2.0m of hcl solution, calculate the increase in temperature given that the two solutions have the same initial temperatures.

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

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?