Help ASAP 1.
What is the final temperature of 12 g of 33 ° C water when it absorbs 2000 joules of heat?

2.
How much heat is released when a 217-g water sample is cooled from 64 ° C to 12 ° C?

3.
What mass of water will undergo a temperature change of 37 ° C when it absorbs 2500 joules of heat?

4.
What is the final temperature of 54 g of 29 ° C water when it releases 3000 joules of heat?

How have the greenhouse gasses increased from the year 2000 to 2018

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt