What happens before the nucleus of the parent cell has divided into two new nuclear

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Answer 1

Answer: Before I get to the answer, I would recommend that you post biology questions under the biology category. You should get your answers more quickly that way :)
There are two things that happen before a parent cell divides:
1) DNA in the nucleus of the parent cell must replicate (this happens in the S phase of the cell cycle). If you're looking for a single answer to your question, then this is probably it.
2) Also, the cell must grow and some organelles (like the mitochondria) must also replicate before the parent cell divides. If organelles like the mitochondria did not replicate, then you would eventually end up with daughter cells that don't have enough mitochondria to support themselves.

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What are 3 physical properties of aluminum foil

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Solid, ductile (can conduct heat), malleable (can be shaped differently).

Where are coefficients located

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A coefficient is the number that comes before a variable in a term. Examples include...

4x
5b
17y

A coefficient comes before the variable. For example, in 5x, the number 5 is the coefficient because it appears before the variable.

Which describes the molecular behavior of a solid? I THINK IT'S A, BUT IM NOT SUREA. Molecules vibrate around a fixed point.
B. Molecules are too far apart to affect each other.
C. Molecules have the greatest energy of motion.
D. Molecules are rigid and do not move.

Answers

I also think it is A

Molecules in a solid should not be able to move. Otherwise it wouldn't be a solid! So the answer is D.

Hope this helps :) ~

In your own words, explain what "the more mass a substance has, the greater the object's thermal energy" means.

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A larger object has more particles, thus causing greater thermal energy.

Answer:

the more heat the more particle movement i dont think mass has any thing to do with it

Explanation:

Name one Importance of solar power

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Because the sun is a sustainable source of energy that can be used to power homes and businesses globally.

N2(g) + 3 H2(g) ---> 2 HN3(g) (blanced)If 5.42 g of nitrogen are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant?

Molar Mass of N2 = 28.02 g/mol
Molar Mass of H2 = 2.02 g/mol
Molar Mass of NH3 = 17.04 g/mol

Answers

Answer:

N₂

Explanation:

The limiting reactant is the one that gives the smaller amount of product.

Assemble all the data in one place, with molar masses above the formulas and masses below them.

M_r: 28.02 2.02 17.04

N₂ + 3H₂ ⟶ 2NH₃

m/g: 5.42 5.42

1. Calculate the moles of each reactant

$\text{Moles of N}_(2) = \text{5.42 g} * \frac{\text{1 mol}}{\text{28.02 g}} = \text{0.1934 mol N}_(2)\n\n\text{Moles of H}_(2) = \text{5.42 g} * \frac{\text{1 mol}}{\text{2.02 g}} = \text{2.683 mol H}_(2)$

2. Identify the limiting reactant

Calculate the moles of NH₃ we can obtain from each reactant.

From N₂:

The molar ratio of NH₃:N₂ is 2:1.

$\text{Moles of NH}_(3) = \text{0.1934 mol N}_(2) * \frac{\text{2 mol NH}_(3)}{\text{1 mol N}_(2)} = \text{0.3867 mol NH}_(3)$

From H₂:

The molar ratio of NH₃:H₂ is 3:2.

$\text{Moles of NH}_(3) = \text{2.683 mol H}_(2) * \frac{\text{2 mol NH}_(3)}{\text{3 mol N}_(2)} = \text{1.789 mol NH}_(3)$

N₂ is the limiting reactant, because it gives the smaller amount of NH₃.

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