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babymother [125]
3 years ago
12

How many days the average menstrual cycle lastas

Chemistry
1 answer:
ICE Princess25 [194]3 years ago
5 0
A cycle is counted from the first day of 1 period to the first day of the next period. The average menstrual cycle is 28 days<span> long. Cycles can range anywhere from </span>21<span> to </span>35 days<span> in adults and from </span>21<span> to </span>45 days<span> in young teens.</span>
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Does listening to music when you study increase your test scores? What is the independent variable?
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Answer:

It can you just have to find a song that get's stuck in your head and try replacing the studing answer with the song because then the answer will get stuck in your head.

Explanation:

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What is ΔrH° for the following phase change? LiCl(s) → LiCl(l)
Yanka [14]

Answer:

\Delta _rH=17.51\frac{kJ}{mol}

Explanation:

Hello!

In this case, since the enthalpy change for any process is computed by subtracting the enthalpy of the final state and the enthalpy of the initial state, for the given phase change, we subtract the enthalpy of the liquid (final state) and the enthalpy of the solid (initial state) considering this a melting process:

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5 0
2 years ago
Calculate the number of moles of solute present in 185.0 mL of a 1.50 mol/L solution of HCl.
____ [38]

Answer:

0.278 mol HCl

Explanation:

We currently have 185.0 mL of a 1.50 mol/L solution of HCl. We want to find the number of moles there are.

Based on the given information, our volume is 185.0 mL and our molarity is 1.50. Because molarity is defined as moles / Litre, we can easily find the moles given volume by multiplying molarity by volume.

First, though, we must convert millilitres to litres. There are 1000 mL in 1 L, so divide 185.0 by 1000:

185.0 / 1000 = 0.185 L

Now, multiply 0.185  by 1.50:

0.185 L * 1.50 mol/L = 0.278 mol HCl

Thus the answer is 0.278 mol HCl.

<em>~ an aesthetics lover</em>

4 0
3 years ago
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