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2 years ago

How many hydrogen atoms are in 0.1488 g of phosphoric acid, H3PO4?

Chemistry

2 answers:

Dahasolnce [82]2 years ago

4 0

Answer:

The answer to your question is: 2.75 x 10 ²¹ atoms

Explanation:

Data

H₃PO₄

mass = 0.1488 g

MW H₃PO₄ = 3 + 31 + (16 x 4) = 98g

98 g of H₃PO₄ ------------------ 3 g of H₂

0.1488 g H₃PO₄ --------------- x

x = 0.0046 g of H₂

1 g of H₂ ------------------- 6.023 x 10²³ atoms

0.0046 g of H₂ -------------- x

x = (0.0046 x 6.023 x 10²³) / 1

x = 2.75 x 10 ²¹ atoms

AveGali [126]2 years ago

4 0

I know god he came to me

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Answer:

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As you want a pH of 5.28 and pKa is 5.64:

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Replacing (2) in (1):

0.4365 = (0.100M - [NaHSuc] / [NaHSuc])

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1.4365 [NaHSuc] = 0.100M

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