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zaharov [31]
3 years ago
7

Which statement describes what happens to the DNA in the process shown? A. Some of the DNA is destroyed, so each daughter cell h

as less DNA than the parent cell. B. The DNA in the parent cell is copied, so the parent cell and the daughter cells all have DNA. C. Some daughter cells get their DNA from the parent cell, but others need to make copies of the DNA. D. The existing DNA in the parent cell is equally distributed between four daughter cells.
Chemistry
1 answer:
kolbaska11 [484]3 years ago
7 0

hhjjjbvhjbvb

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Another name for a mesh screen is a sieve.
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For the reaction N2(g) + 2H2(g) → N2H4(l), if the percent yield for this reaction is 100.0%, what is the actual mass of hydrazin
barxatty [35]

Answer:

53.6 g of N₂H₄

Explanation:

The begining is in the reaction:

N₂(g) + 2H₂(g) → N₂H₄(l)

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59.20 g / 28.01 g/mol = 2.11 moles of nitrogen

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1 mol of N₂ react to 2 moles of H₂

Our 2.11 moles of N₂ may react to (2.11 . 2) /1 = 4.22 moles of H₂, but we only have 3.35 moles. The hydrogen is the limiting reactant.

2 moles of H₂ produce at 100 % yield, 1 mol of hydrazine

Then, 3.35 moles, may produce (3.35 . 1)/2 = 1.67 moles of N₂H₄

Let's convert the moles to mass:

1.67 mol . 32.05 g/mol = 53.6 g

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3 years ago
Write a balanced chemical equation for the reaction that occurs when calcium metal undergoes a combination reaction with O2(g)?
ivann1987 [24]
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How do many types of cells, like bacteria, reproduce?
umka2103 [35]

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Explanation:

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