how many grams are in 2.3 x 10^-4 moles of calcium phosphate, using scientific terms, Ca^3(PO^3)^2

Question

noobster916 · Answer

My teacher is asian and we cant understand a word she's saying so im lost 100%

noobster916 · Answer

Ca^3 (Ca x 3) (P (P x 1) O^3 (O x 3)) x 2

noobster916 · Answer

Is the mass for each element shown

dallascowboys88 · Answer

Yes Your Right

dallascowboys88 · Answer

Yes They Are Shown.

noobster916 · Answer

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noobster916 · Answer

So, Ca ^ 3 (Calcium = 40 x 3 = 120)
120 grams so far!
Then, it gets to the difficult part. So, PO^3 is basically saying P (Phosphorus = 31) So 31 so far ( Don't add up )
And O ( Oxygen = 16 x 3 = 48) 
Then you can do 31 + 48 = 79, which means you have to multiply 79 by two I believe, meaning it will be 158
So, 158 + 120 = 278

However, this could be incorrect as it may be 79 squared, so 79 x 79 = 6241 + 120 = 6361, and if we look at 2.3 x 10 ^ -4,
In scientific notation, it basically means 0.0023 I believe...
So 6361 and 0.0023 (-4)
How many grams?