3 years ago

Answer in the blank 1. Broken glass jar 2. Food scraps 3. Cooked rice 4. Plastic bags 5. Water

Chemistry

1 answer:

blagie [28]3 years ago

6 0

I don't understand ur question

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What is the mass in grams of 1.50 X 1023 molecules of NaOH?

avanturin [10]

Answer:

a. 10.0 g

Explanation:

The molar mass of NaOH is 39.997 grams which was calculated by adding the molar mass of Sodium, Oxygen, and Hydrogen $22.990 + 15.999 + 1.008 = 39.997$ . But before we do anything with this number we must first convert $1.50 * 10^{23}$ molecules to moles. We can do this by dividing by Avogadro's number or $6.022*10^{23}$ ( $\frac{1.50*10^{23}}{6.022*10^{23}} = 0.24909$ moles). We then convert moles to grams by multiplying by the molar mass of NaOH, ( $0.24909 * 39.997 = 9.96$ grams). This is almost exactly 10 and the margin of error is likely due to the original numbers not being precise enough.