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dlinn [17]
3 years ago
13

How many moles of sodium are in a sample of 46g?

Chemistry
1 answer:
nlexa [21]3 years ago
3 0
Molar mass Na = 22.98 g/mol

Therefore:

1 mole Na ----------- 22.98 g
? moles Na ---------- 46 g

46 x 1 / 22.98 => 2.001 moles of Na
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Match each term to its description. (3 points)
madreJ [45]

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3 0
3 years ago
Read 2 more answers
Calculate how many grams of of copper sulfate pentahydrate are required to prepare
Rzqust [24]
Molar mass CuSO4.5H2<span>O => 249.685 g/mol

Volume in liters => 100 mL / 1000 => 0.1 L
</span>
1 L ----------------- 0.05 M
0.1 L -------------- ?? ( moles of <span>copper sulfate pentahydrate )
</span>
0.1 x 0.05 / 1 => 0.005 moles

1 mole ------------- <span> 249.685 g
</span>0.005 moles ------- ( mass of <span>copper sulfate pentahydrate )
</span>
0.005 x 249.685 / 1 => 1.28425 g CuSO4.5H2<span>O
</span>
hope this helps!




8 0
3 years ago
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