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White raven [17]
3 years ago
12

What is the purpose of the scientific method

Chemistry
1 answer:
yKpoI14uk [10]3 years ago
3 0
I believe that the answer is D.
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Select the correct answer. Which statement is true for a heating curve?
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What is (2.5x10²)² =
siniylev [52]
The answer is 6.25 x 10^4.
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choli [55]

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3 years ago
) How many moles are there in 2.00 x 10^19 molecules of calcium phosphate?
Tamiku [17]

Answer:

\huge 3.322 \times  {10}^{ - 5}  \:  \: moles  \\

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

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6.02 × 10²³ entities

From the question we have

n =  \frac{2.00 \times  {10}^{19} }{6.02 \times  {10}^{23} }  \\  \\  = 3.322 \times  {10}^{ - 5}  \:  \: moles

Hope this helps you

4 0
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