Question

How many grams of sodium do you need to produce 18g of sodium chloride?

Answer 1

`"7.1 g"`

Explanation:

Chemical formula of sodium chloride is `NaCl`
Molar mass `:58.5g`
Molar mass of sodium `:23g`
Molar mass of chlorine `:35.5g`

Mass of `NaCl` we have is `18g`
Recall `n=m/M` (where n is number of moles, m is given mass, M is molar mass)

`n=18/58.5`

Now using this for sodium

`18/58.5=m/23`

`m= "7.1 g"`