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RoseWind [281]
3 years ago
11

80g of Sodium react with 40g of Chloride to produce a product of Sodium Chloride. How many grams of sodium chloride will be pres

ent after this chemical reaction?
Na2 + 2Cl2 —> 2NaCl2


Students in Ms.Tillman’s class added 100 grams of copper to 15 grams of oxygen. A chemical reaction occurred produced copper oxide, as shown in the equation below
2 Cu + ___O2 —> 2 CuO

What type of reaction is this?



How many total grams should be present at the end of the chemical reaction?
Chemistry
1 answer:
natita [175]3 years ago
3 0
Answer:

explanation:i’m just bored at home watching tv
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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
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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

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Mass of Na3PO4 = molar mass × number of moles

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= 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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Explanation:

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