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What is the molecular weight of #H_3PO_4#?

Answer 1

Noah Aldrich

If you take a look at a periodic table, let #Z# be the atomic number and #MM# be the molar mass of atom #X#:

#Z_"H" = 1#
#MM_"H" = 1.0079#

#Z_"P" = 15#
#MM_"P" = 30.974#

#Z_"O" = 8#
#MM_"O" = 15.999#

Just note how many of each atom is in the compound, and add accordingly. For instance, there are four oxygen atoms.

If you want to check your answer, just google the compound.

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Answer 2

Xavier Avery

The molecular weight of H3PO4 (phosphoric acid) is approximately 98.0 grams per mole.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.