3 years ago

A chemical reaction occurs when one or more change into one or more new substances called

Chemistry

1 answer:

attashe74 [19]3 years ago

6 0

Changes into new substances called product.

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The ph of a solution containing 0.818 M acetic acid (ka1.76*10-5) ans 0.172 M sodium acetate is?

kvasek [131]

Explanation:

It is known that the relation between pH and $pK_{a}$ is as follows.

pH = $pK_{a} + log \frac{[salt]}{[acid]}$

and, $pK_{a} = -log K_{a}$

Hence, first we will calculate the value of $pK_{a}$ as follows.

$pK_{a} = -log K_{a}$

= $-log (1.76 \times 10^{-5}$

= 4.75

Now, we will calculate the value of pH as follows.

pH = $pK_{a} + log \frac{[\text{sodium acetate}]}{\text{acetic acid}}$

= $4.75 + log \frac{0.172}{0.818}$

= 4.75 + (-0.677)

= 4.07

Therefore, we can conclude that the pH of given solution is 4.07.

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KOH and LiOH are examples of bases neutral compounds acids salts

vampirchik [111]

It is an example of bases

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schepotkina [342]

This process is called meiosis! good luck!

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A container with 3.0 moles of gas has a volume of 60.0L with a temperature at 400.K what is the pressure

iris [78.8K]

Answer: P= 1.64 atm

Explanation: solution attached.

Use Ideal gas law

PV= nRT

Derive for P

P= nRT/V R= 0.08205 L.atm/mol.K

Substitute the values.

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For the Earth's atmosphere, section number two in the pie graph BEST represents the percentage of A) argon B) oxygen C) nitrogen

larisa86 [58]

-Oxygen

According to Google these are the percentages of the Earths Atmosphere

1 78% - Nitrogen

2 21% - Oxygen

3 0.9% - Argon

4 0.3 - Carbon Dioxide with very small percentage of other elements.

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