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2 years ago

Looking at a potential energy diagram what is the name given to represent the amount of energy needed for the

Chemistry

1 answer:

Oksanka [162]2 years ago

3 0

Answer:

activation activation energy is defined as the minimum amount of energy needed to start a reaction.

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temperature usually increase when water condenses which behavior of water is most directly responsible for this phenomenon?

aniked [119]

Answer:

Temperature usually increases when water condenses. What behavior of water is most directly responsible for this phenomenon? The release of heat by the formation of hydrogen bonds. Hydrogen bonds stabilize and keep the of ice farther apart than the water molecules of liquid water.

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3 years ago

6.) Choose all of the following that are TRUE regarding the Ideal Gas Law.

Cerrena [4.2K]

Answer:

All temperatures must be in Kelvins.

Explanation:

What you have to know;

When Pressure is in atm units

Temperature must be in Kelvins.
Volume must be in cubic centimetres.
R = 0.0813

When Pressure is in Pascals or N/m^2

Temperature must be in Kelvins.
Volume must be in cubic metres.
R = 8.314

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3 years ago

2H2(g)+O2(g)→2H2O(l)

Zina [86]

Answer:

6.4g

Explanation:

32g of O2 produce 36g of H2O/5.70g of O2 produce x the answer is 6.4g

4 0

3 years ago

Explain why rain water is not pure

Leviafan [203]

Answer:

before it evaporated into the air, it was on the Earth...and it could have been contaminated/dirtied. There isn't a process during evaporation that cleans water...you have to purify it yourself.

Explanation:

5 0

3 years ago

Read 2 more answers

You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (p K a = 4.20 ) and 0.200 M sodium benzoate

bekas [8.4K]

Answer : The volume of sodium benzoate and benzoic acid solution mixed to prepare this buffer should be, 29.0 mL and 71 mL respectively.

Explanation :

Let the volume of sodium benzoate (salt) be, x

So, the volume of benzoic acid (acid) will be, (100 - x)

Using Henderson Hesselbach equation :

$pH=pK_a+\log \frac{[Salt]}{[Acid]}$

Now put all the given values in this expression, we get:

$4.00=4.20+\log \left(\frac{(\frac{0.200x}{100})}{(\frac{0.100(100-x)}{100})}\right)$

x = 29.0

The volume of sodium benzoate = x = 29.0 mL

The volume of benzoic acid (acid) = (100 - x) = (100 - 29.0) = 71 mL

Thus, the volume of sodium benzoate and benzoic acid solution mixed to prepare this buffer should be, 29.0 mL and 71 mL respectively.

5 0

3 years ago