What Can you be more clear --Molecules change it from being less dense
Answer:
n = 0.0814 mol
Explanation:
Given mass, m = 35.7g
The molar mass of Tin(IV) bromate, M = 438.33 g/mol
We need to find the number of moles of bromine. We know that,
No. of moles = given mass/molar mass
So,

So, there are 0.0814 moles of bromine in 35.7g of Tin(IV) bromate.
40 drops of blood in a tube that holds 2 mL
if 105 grams burns completely
therefore
105 ×22.4/48=49