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SpyIntel [72]
3 years ago
10

Part C How did Dr. Tierno find the answer to his question?

Chemistry
2 answers:
Ludmilka [50]3 years ago
8 0

Answer:

Dr. Tierno tested the pillows for signs of microorganisms. He took samples from the pillow, then he grew the microorganisms in a petri dish.

Explanation:

This is the answer on edmentum

matrenka [14]3 years ago
7 0
Sorry I cant I just need some points
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Answer:

1.7927 mL

Explanation:

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This solid contains 21.6 wt% Ba(NO_3)_2, thus,

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Molar mass of Ba(NO_3)_2 = 261.337 g/mol

The formula for the calculation of moles is shown below:

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Thus,

Moles= \frac{1.026\ g}{261.337\ g/mol}

Moles= 0.003926\ mol

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Ba(NO_3)_2+H_2SO_4\rightarrow BaSO_4+2HNO_3

1 moles of Ba(NO_3)_2 react with 1 mole of H_2SO_4

Thus,

0.003926 mole of Ba(NO_3)_2 react with 0.003926 mole of H_2SO_4

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Also, considering:

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2.19=\frac{0.003926}{Volume\ of\ the\ solution(L)}

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2 years ago
What are six traits of a good scientific observer
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Hope This Helped :D</span>
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3 years ago
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Which changes occur when Pt2+ is reduced?
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The correct answer is option 2. When Pt2+ is reduced it loses electrons, oxidizing it. The oxidation number is the charge of the atom. Adding an electron, decreases the net charge consequently the oxidation number.
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Why is it important for you to bring your line of sight down to the level of the meniscus?
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