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Can someone check my answers and see if it's right?

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1 Answer

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Answer:

the mass of oxygen found in 57.5 g of K3PO4 is approximately 17.3 grams.

The element with the atomic symbol "H" is hydrogen. So, the pure element in this case is hydrogen.

the empirical formula of the hydrocarbon is C6H5.

The correct option is: K3PO4(aq) + 3HNO3(aq) → 3KNO3(aq) + H3PO4(aq)

there are approximately 2.45e14 hydrogen atoms in a 7.91 ng sample of caffeine.

Step-by-step explanation:

Don't trust my answers fully some might be wrong.

User Omar Shehab
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