Basic Chem Question?

Question

I have the answer for this question from manual but I do now understand on how to get to the solution. Can someone explain ti to me? Thanks.

Q: A mixture weighing 6.2 grams is 28% silicon dioxide or sand, 36% sodium chloride or table salt, and the rest being sodium bicarbonate or baking soda. How many grams of baking soda are present in the sample?

A: 2.852g

Answer 1

Are you sure you have the look at the right answer? 36% of 6.2 g is only 2.232 g not 2.852 g. Either that or you are missing some information. Please double check.

Answer 2

28% + 36% = 64%
100% of the material - 64% others = 36% baking soda.
That means the material is 36% NaHCO3.
Multiply 6.2 g by 0.36 to get the grams of NaHCO3.
Hope it healps

Answer 3

28% + 36% = 64%
100% of the material - 64% others = 36% baking soda.
That means the material is 36% NaHCO3.
Multiply 6.2 g by 0.36 to get the grams of NaHCO3.

Answer 4

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Answer 5

100% - 28% - 36% = 36%

36% of 6.2 is 2.852.