Can someone help please help me hel which material would make the least efficient heat sink

material: heat capacity:

pure water 4.18
seawater 3.89
dry air 1.00
wet mud 2.51
brick 0.84
granite 0.79
limestone 0.92

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

The fact that the total amount of energy in a system remains constant is a(n)