Please help! And can you explain how you got the answer because I don't understand how to tell if it is a base or acid. ​

How does the motion of particles in a gas change as the gas cools

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?