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umka2103 [35]
3 years ago
13

How many moles of Na2SO4 are present in 284.078 grams of Na2SO4? A. 2 B. 3 C. 5 D. 6

Chemistry
2 answers:
larisa [96]3 years ago
7 0
It’s A. 2
Explanation:
First step: find out how many grams are in one mole of Na2SO4
Multiply the number of atoms by the mass of the element
Na: 2 * 23 = 46 units
S: 1 * 32 = 32 units
O: 4 * 16 = 64 units
Add them all together
142 g/mol
Now set up the table

son4ous [18]3 years ago
5 0
I think it’s b but i could be wrong
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