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timama [110]
3 years ago
5

When choosing a respirator for your job, you must conduct a _____ test.

Chemistry
1 answer:
Lina20 [59]3 years ago
4 0
(B) breathing (test)
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Now look at the volcano map what type of boundary tends to give rise to volcanic activity
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2 years ago
Why is the Universal Law of Gravitation is a scientific Law and not a theory?
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2 years ago
Which of the following reactions is not an example of an oxidation-reduction reaction? ( 2 points) Select one: a. H2 + F2yields
Kisachek [45]
Answer is: c. CuSO4 + 2NaOH yields Cu(OH)2 + Na2SO4.
Copper atom has oxidation number +2, sulfur atom oxidation number +6, oxygen has oxidation number-2, sodium has oxidation number +1 and hydrogen has +1 on both side of chemical reaction, so elements did not change their oxidation numbers.
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3 years ago
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lana [24]

Whenever the fuel is being used up, a star explodes and the energy leakage from a star's core ceases.

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3 years ago
Convert the following<br> 4. 100 cm =<br> 5. 453 m = _<br> 6. 89847nm = _<br> 7. 3Mm =
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4. I meter
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