1) Name: copper(II) nitrate
2) molar mass:
Determine the mass of every element by multiplying its subscript by the atomic mass and add the masses of all the elements
Element atomic mass subscript total mass of the element
Cu 63.55 1 63.55
N 14.01 2 2*14.01 = 28.02
O 16.00 3*2=6 6*16.00 = 96.00
Molar mass = 63.55 + 28.02 + 96.00 = 187.57 g/mol
First, the water must be raised to a temperature of 100 degrees - this requires 4.181 joule/(degree x gram). For example, if your "room temperature" is 20 degrees, multiply that by 8.Then you have to actually evaporate it - that costs 2260 joules/gram.
The answer is B. In order to test something out you need to be able to solve it.
Answer:
B is the answer because it doesn't matches the num of valence electrons
