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Svetlanka [38]
2 years ago
8

MARKING BRAINLEIST !!

Chemistry
1 answer:
Murrr4er [49]2 years ago
3 0

Answer:

Option C

Explanation:

The theory is useful as in the usual constitution of the theory the professor stated

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What sample size (grams) of Na3PO4 (FW 164.00) known to be 50.00% pure should be used to consume exactly 40.00 mL of 0.1000 M HC
Mkey [24]

Answer:

0.109 g.

Explanation:

Equation of the reaction:

Na3PO4 + 3HCl --> 3NaCl + H3PO4

Number of moles of HCl = molar concentration × volume

= 0.1 × 0.04

= 0.004 mol.

By stoichiometry, 1 mole of Na3PO4 neutralises 3 moles of HCl. Therefore, number of moles of Na3PO4 = 0.004/3

= 0.0013 mol

Mass of Na3PO4 = molar mass × number of moles

= 0.0013 × 164

= 0.219 g

Since 50% of Na3PO4 was present in the sample. Let 100 g be the total mass of the substance

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3 years ago
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Water is formed when two hydrogens bond to a oxygen atom
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Answer:

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What happens during covalent bonding? ​
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