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Bumek [7]
2 years ago
7

How hydrogen chloride gas is prepared on labrotary by conc sulpheric acid ​

Chemistry
1 answer:
Citrus2011 [14]2 years ago
4 0

Answer:

It is prepared small amounts of hydrogen cloride for uses in the lab.

It can be  "generated in an HCl generator by dehydrating hydrochloric acid with either sulfuric acid or anhydrous calcium chloride."

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3.9 X 1022 molecules of CO2 = _ moles of CO2
agasfer [191]

Answer:

moles CO2 = 0.065 moles

Explanation:

  • mole = 6.022 E23 molecules.....Avogadro

∴ molecules CO2 = 3.9 E22 molecules

⇒ moles CO2 = (3.9 E22 molecules CO2)×( moles CO2/ 6.022 E23 molecules CO2)

⇒ moles CO2 = 0.065 moles

7 0
3 years ago
The breaking of _____________________ bonds in food releases energy for your body to use.
olya-2409 [2.1K]

Answer:

Chemical bonds

Explanation:

the chemicals in your food are what give you energy when they break down, that's how it releases energy Into your body.

6 0
3 years ago
I need answers please!
lana [24]
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3 years ago
Which of the following statements best describes the body processes alcohol
Nana76 [90]
<span>After alcohol is metabolized in the liver, it is burned as fuel for the cells. </span>
5 0
3 years ago
Read 2 more answers
it takes 513 kj to remove a mole of electrons from the atoms at the surface of a piece of metal. how much energy does it take to
schepotkina [342]

Answer:

The right solution is "8.5\times 10^{-19} \ joule".

Explanation:

As we know,

1 mole electron = 6.023\times 10^{23} \ no. \ of \ electrons

Total energy = 513 \ KJ

                     = 513\times 1000 \ joule

For single electron,

The amount of energy will be:

= \frac{513\times 1000}{(6.023\times 10^{23})}

= 8.5\times 10^{-19} \ joule

8 0
3 years ago
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