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garri49 [273]
3 years ago
5

What is the gcf of 16 and 72? a. 2 b. 4 c. 16 d. 8

Chemistry
2 answers:
nadya68 [22]3 years ago
7 0
Your answer is D. 8

16 = 2^4
72 = 2^3*3^2

So you'll choose 2^3 = 8
r-ruslan [8.4K]3 years ago
7 0
Factors of 16 = 2 * 8 
Factors of 72 = 9 * 8

In short, GCF Would be: 8 [Option D]

Hope this helps!
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The mass of calcium sulfate that will precipitate is 6.14 grams

Explanation:

<u>Step 1:</u> Data given

500.0 mL of 0.10 M Ca^2+ is mixed with 500.0 mL of 0.10 M SO4^2−

Ksp for CaSO4 is 2.40*10^−5

<u>Step 2:</u> Calculate moles of Ca^2+

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Moles SO4^2- = 0.05 moles

<u>Step 4: </u>Calculate total volume

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<u>Step 5: </u> Calculate Q

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Qsp = (0.050)(0.050 )=0.0025 >> Ksp

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<u> Step 6:</u> Calculate molar solubility

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2.40 * 10^-5 = x²

x = √(2.40 * 10^-5)

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<u>Step 8:</u> Calculate initial mass of CaSO4

Since initial moles CaSo4 = 0.050

Initial mass of CaSO4 = 0.050 * 136.14 g/mol

Initial mass of CaSO4 = 6.807 grams

<u>Step 9:</u> Calculate mass precipitate

6.807 - 0.667 = 6.14 grams

The mass of calcium sulfate that will precipitate is 6.14 grams

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