You find the molar mass of NaCl first, by adding the weight of both to get 58.44g. Then you set up the equation with what is given: 2.4mol NaCl and multiply it by 58.44g NaCl to get your answer= 140.256g
The energy we use in our homes tends to be provided by coal, gas, and oil. These three "fossil fuels" are underground supplies of energy, created millions of years ago, that we drill, mine, or pipe to the surface to satisfy our energy needs today. Most of the energy we use in our vehicles also comes from oil
The option 2 is incorrect because it is not in all carbohydrates that the number of atoms of carbon will be equal to the number of atoms of oxygen. This can be seen in the case of sucrose with the molecular formula C12H22O11
PART B
1. A carbohydrate that yields many monosaccharides when hydrolysed is a polysaccharides
2. The general name of any sugar is carbohydrate
3. Lactose is a double sugar meaning it contains 2 monosaccharides or simple sugar and thus when hydrolysed would be splitted into two simple sugars
4. A monosaccharide cannot be hydrolysed further because it’s at the simplest stage of any carbohydrate