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Questions  >>  SAT  >>  Chemistry  >>  Atomic Structure
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Find the total mass of protons in 34 mg of $NH_3$ at STP.

$\begin{array}{1 1}(a)\;2.0145 \times 10^{5} \; kg \\ (b) \; 1.0145 \times 10^{-5} \; kg \\ (c) \; 2.0145 \times 10^{-7} \; kg \\ (d) \; 2.0145 \times 10^{-5} \; kg\end{array}$

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