When the activating button is pushed, water mixes with calcium oxide. This produces calcium hydroxide in a chemical reaction which gives off heat. The heat warms up the food. What happens when this reaction occurs in the closed can? A.
The mass of the can and its contents remains the same.
B.
The mass of the can and its contents decreases.
C.
The mass of the can and its contents increases.
D.
The mass of only the food in the can decreases.

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)