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Luden [163]
3 years ago
6

How many grams are in 4.5 moles of sodium

Chemistry
2 answers:
Vanyuwa [196]3 years ago
7 0

Answer:

The mass of 4.5 moles of sodium fluoride is 189g.

Explanation:

Vesna [10]3 years ago
6 0

Answer: 103.5 g Na

Explanation: 1 mole of Na is equal to its molar mass which is 23 g.

Solution:

4.5 moles Na x 23 g Na / 1 mole Na

= 103.5 g Na

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What element does “X” represent in Figure 1?
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2 NH3 + 3 CuO →3 Cu + N₂ + 3 H₂O
Tatiana [17]

40.1g of nitrogen gas is produced.

The equation given is

2 NH₃ + 3 CuO →3 Cu + N₂ + 3 H₂O

This equation is already balanced.

When 3 moles of CuO are consumed, 1 mole of nitrogen gas is produced.

We get 1 mole of nitrogen from 3 moles of copper oxide.

We need to find the number of moles of nitrogen gas produced when 4.3 moles of copper oxide are consumed.

4.3/3 x 1 = 1.433 mols

  • 1.433 mols of nitrogen gas are produced
  • The molar mass of nitrogen gas is 14+14 = 28g
  • The amount of nitrogen gas produced in grams is 28x1.433 = 40.1g

40.1g of nitrogen gas can be made when 4.3 moles of CuO are consumed.

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What is the oxidation number of HCLO4?
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