Question

You have 100 grams of rubidium bromide (RbBr). How many moles do you have?

Answer 1

Answer: The moles of rubidium bromide for the given amount is 0.61 moles

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of RbBr = 100 g

Molar mass of RbBr = 165.37 g/mol

Putting values in above equation, we get:

$\text{Moles of RbBr}=\frac{100g}{165.37g/mol}=0.61mol$

Hence, the moles of rubidium bromide for the given amount is 0.61 moles

Answer 2

Answer:

a) 0.61 mol

Explanation:

165.3718 g Rubidium Bromide = 1 mol

100 g  Rubidium Bromide =  1/165.3718  x   100

                                          =  0.61 mol