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solniwko [45]
3 years ago
15

A solution is classified as a weak base. Which of these could be the pH of the solution?

Chemistry
1 answer:
Pepsi [2]3 years ago
3 0

Explanation:

The pH of a weak base falls somewhere between 7 and 10.

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A 5.00 L sample of air at 0 C is warmed to 100.0 C. What is the new volume of the air? First, identify V1.
Paladinen [302]

Answer : The new volume of the air is, 6.83 L

Explanation :

Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=5.00L\\T_1=0^oC=(0+273)K=273K\\V_2=?\\T_2=100^oC=(100+273)K=373K

Putting values in above equation, we get:

\frac{5.00L}{273K}=\frac{V_2}{373K}\\\\V_2=6.83L

Therefore, the new volume of the air is, 6.83 L

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3 years ago
Helpppp fasttttttttttttttt Choose the best word to complete the sentence.
Lapatulllka [165]

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equilateral (B)

Explanation:

it is the only word which relates to triangles and their shape - plus, its logical and makes sense.

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3 years ago
Which element has four energy levels? Na,K,Cs,Rb
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Potassium K 

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Is there such thing as a pure mixture?
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Pure substances are further broken down into elements and compounds. Mixture are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.
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(( PLEASE HELP QUICK ))Which expression can be used to calculate the ratio of the rate of effusion of gas A to the rate of effus
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Answer:

The square root of the molar mass of B ÷ the square root of the molar mass of A  

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Graham’s Law applies to the effusion of gases:

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r \propto \dfrac{1}{\sqrt{M}}

If you have two gases A and B, the ratio of their rates of effusion is

\dfrac{r_{\text{A}}}{r_{\text{B}}} = \sqrt{\dfrac{M_{\text{B}}}{M_{\text{A}}}}

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3 years ago
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