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yarga [219]
3 years ago
10

A solar eclipse will last 1 to _____ minutes.

Chemistry
2 answers:
horrorfan [7]3 years ago
8 0
1st qn - B
<span>2nd qn - A 
3 is no
</span>
stellarik [79]3 years ago
6 0
1st qn - B
2nd qn - A
Last qn - Yes
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The periodic table of elements is organized by the number of
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Answer:

the increasing mass number

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3 years ago
A single serving bag of snack chips contains 65.0 Cal. Assuming that all of the energy from eating these chips goes toward keepi
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Answer:

= 62.1 hours

Explanation:

Energy provide by the serving is 65 cal

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Minutes = 271960 / 73

= 3593.94 minutes  

Time in hours = 3725.429 / 60

= 62.1 hours

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4 years ago
Which of the following statements does not describe the structure of an atom?  An atom has a small, dense center called the nucl
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<span>Inside the nucleus of an atom are protons and electrons. </span>
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3 years ago
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In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
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Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

•The mole ratio can be determined by first writing out a balanced chemical equation for the reaction.

For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

1mol:3mol : 2mol

From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

Therefore, the mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

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3 years ago
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