<span>164.0
First we must look up the atomic weight of all elements in calcium nitrate
Ca: 40.078
N: 14.0067
O: 15.999
Then we compute the mass of the nitrate polyatomic ion which contains one nitrogen and 3 oxygen atoms.
14.0067+3*15.999 = 62.0037
For the entire molecule we calculate the weight of two nitrates and one calcium
2 * 62.0037 + 40.078 = 164.0152
rounding to the tenths place results in
164.0</span>
I would say that B is the correct answer which means that the melting point would be intensive or that no matter how large or small the sample of the sulphur is, it will have a consistent melting temperature or of 115.2 degrees C.
