Rachel burns a 53 gram cracker under a soda can filled with 77.2 grams of water. She took the temperature of the water before she began -- it was 6.9 degrees Celsius. After the cracker was done burning, the temperature of the water was 84.3 degrees Celsius. How many calories of heat were released by the cracker? Round your answer to one digit after the decimal point.

Heat flow inside earth activity i chose chemistry cause there is no science alert! the newspaper has been hacked, and all of the headlines have been changed to reflect old legends. it is your task to make sure they are corrected. choose one of the newspaper headlines. you will rewrite the headline and a one-to-two-paragraph article to make the news scientifically correct. be sure to include the following in your corrected newspaper article: new title reflecting correct information detailed information about the processes and tectonic plate interactions that are causing the geological event to occur real-world example of where to find the geological event on earth (picture and location) also review the grading rubric before you begin.

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?