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LiRa [457]
3 years ago
8

Convert 652.2 mm Hg to Hg

Chemistry
1 answer:
NARA [144]3 years ago
5 0
It is 1 atm = 764 mm Hg
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What is the concentration (M) of CH3OH in a solution prepared by dissolving 11.7 g of CH3OH in sufficient water to give exactly
Andrej [43]

Answer:

3.65~M

Explanation:

We have to remember the <u>molarity equation</u>:

M=\frac{mol}{L}

So, we have to calculate "mol" and "L". The total volume is 100 mL. So, we can do the <u>conversion</u>:

100~mL\frac{1~L}{1000~mL}=~0.1~L

Now we can calculate the moles. For this we have to calculate the <u>molar mass</u>:

O: 16 g/mol

H: 1 g/mol

C: 12 g/mol

(16*1)+(1*4)+(12*1)=32~g/mol

With the molar mass value we can <u>calculate the number of moles</u>:

1.7~g~of~CH_3OH\frac{1~mol~CH_3OH}{32~g~of~CH_3OH}=0.365~mol~CH_3OH

Finally, we can <u>calculate the molarity</u>:

M=\frac{0.365~mol~CH_3OH}{0.1~L}=3.65~M

I hope it helps!

7 0
3 years ago
Explain how the Rutherford gold foil experiment correctly advanced atomic theory away from the plum pudding model?
Rudiy27

Answer is: Rutherford demonstrate that J.J Thompson's Plum Pudding model was not accurate.

Rutherford theorized that atoms have their charge concentrated in a very small nucleus.

This was famous Rutherford's Gold Foil Experiment: he bombarded thin foil of gold with positive alpha particles (helium atom particles, consist of two protons and two neutrons).  

Rutherford observed the deflection of alpha particles on the photographic film and notice that most of alpha particles passed straight through foil.

That is different from Plum Pudding model, because it shows that most of the atom is empty space.

7 0
3 years ago
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noe  sory opwqkfj

s

Explanation:

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What is the proper formula for vanadium (iv) percholrate?
VLD [36.1K]

Answer:VO(ClO4)3 i'm sure this is it

Explanation:

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The answer is prokaryote :)
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