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3 years ago

Which does not occur during meiosis

2 answers:

5 0

DNA replication does not occur between the two nuclear divisions an event unique to meiosis is that during meiosis. hope that helps

frosja888 [35]3 years ago

3 0

I believe its DNA replication I'm not 100% sure

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How many water molecules self ionize in one liter of water

Drupady [299]

Answer:

yes

Explanation:

because I think it is correct fo u

5 0

3 years ago

What volume (in liters) of a solution contains 0.14 mol of KCl?

oksano4ka [1.4K]

Answer:

$\boxed {\boxed {\sf 0.078 \ L }}$

Explanation:

We are asked to find the volume of a solution given the moles of solute and molarity.

Molarity is a measure of concentration in moles per liter. It is calculated using the following formula:

$molarity= \frac{moles \ of \ solute}{liters \ of \ solution}$

We know there are 0.14 moles of potassium chloride (KCl), which is the solute. The molarity of the solution is 1.8 molar or 1.8 moles of potassium chloride per liter.

moles of solute = 0.14 mol KCl
molarity= 1.8 mol KCl/ L
liters of solution=x

Substitute these values/variables into the formula.

$1.8 \ mol \ KCl/ L = \frac { 0.14 \ mol \ KCl}{x}$

We are solving for x, so we must isolate the variable. First, cross multiply. Multiply the first numerator and second denominator, then the first denominator and second numerator.

$\frac {1.8 \ mol \ KCl/L}{1} = \frac{0.14 \ mol \ KCl}{x}$

$1.8 \ mol \ KCl/ L *x = 1*0.14 \ mol \ KCl$

$1.8 \ mol \ KCl/ L *x = 0.14 \ mol \ KCl$

Now x is being multiplied by 1.8 moles of potassium chloride per liter. The inverse operation of multiplication is division, so we divide both sides by 1.8 mol KCl/L.

$\frac {1.8 \ mol \ KCl/ L *x}{1.8 \ mol \ KCl/L} = \frac{0.14 \ mol \ KCl}{1.8 \ mol \ KCl/L}$

$x= \frac{0.14 \ mol \ KCl}{1.8 \ mol \ KCl/L}$

The units of moles of potassium chloride cancel.

$x= \frac{0.14 }{1.8 L}$

$x=0.07777777778 \ L$

The original measurements of moles and molarity have 2 significant figures, so our answer must have the same. For the number we found, that is the thousandth place. The 7 in the ten-thousandth place tells us to round the 7 up to a 8.

$x \approx 0.078 \ L$

There are approximately 0.078 liters of solution.

5 0

3 years ago

The cubic centimeter (cm3) is a measurement of which of the following quantities? Density

Murljashka [212]

(cm3) is a commonly used unit of volume that extends the derived SI-unit cubic metre, and corresponds to the volume of a cube that measures 1 cm × 1 cm × 1 cm.

so the answer is volume

8 0

3 years ago

If 2.27 moles of bromine react with excess phosphorus, how many moles of phosphorus tribromide will be produced

zalisa [80]

Answer:

The answer to your question is 1.51 moles of PBr₃

Explanation:

Data

moles of Br = 2.27

moles of PBr₃ = x

Balanced chemical reaction

2P + 3Br₂ ⇒ 2PBr₃

Reactant Element Products

2 P 2

6 Br 6

-Use proportions to find the answer

3 moles of Br₂ ------------------ 2 moles of PBr₃

2.27 moles of Br₂ ------------------ x

x = (2.27 x 2) / 3

x = 4.54 / 3

x = 1.51 moles

7 0

3 years ago

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Mudcracks result from:

Sonbull [250]

Drying of lake beds :)

4 0

4 years ago

Read 2 more answers