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quester [9]
3 years ago
8

Help me please!! Best gets brainiest

Chemistry
2 answers:
Kobotan [32]3 years ago
6 0
I would think D it looks right to me idk
Usimov [2.4K]3 years ago
3 0
The virus injects genetic material into the host
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4 years ago
What is the percent composition of phosphoric acid (H3PO4)?
aleksklad [387]

Answer:

H3PO4 Mol mass..

= (3 x H1 = 3) + (1 x P31 = 31) + (4 x O16 = 64). = 98g/mol.

a)..Hydrogen: = 3 / 98 = 0.0306 x 100% = 3.06%.

b)..Phosphorus = 31/98 = 0.3162 x 100% = 31.63%.

c)..Oxygen = 64/98 = 0.6531 x 100% = 65.31%.

(Total = 100% H3PO4).

Explanation:

Find the molar mass of all the elements in the compound in grams per mole.

Find the molecular mass of the entire compound.

Divide the component's molar mass by the entire molecular mass.

You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.

8 0
3 years ago
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