Rachel burns a 53 gram cracker under a soda can filled with 68.7 grams of water. She took the temperature of the water before she began -- it was 5.5 degrees Celsius. After the cracker was done burning, the temperature of the water was 73.1 degrees Celsius. How many calories of heat were released by the cracker? Round your answer to one digit after the decimal point.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

b) nuclear ive learned that in a pedtrodic table

idk what is it? is this a question that you know the answer or u dont