Water has a lot of high specific heat capacity
So you find the atomic mass in amu, and the molar mass would be in grams.
B, sodium because if you look at your periodic table it is the only element not compounded with another
The correct answer for this question is
20.2 g silver placed in 21.6 mL of water and 12.0 g silver placed in 21.6 mL of water.
15.2 g copper placed in 21.6 mL of water and 50.0 g copper placed in 23.4 mL of water.
11.2 g gold placed in 21.6 mL of water and 14.9 g gold placed in 23.4 mL of water.
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