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4 years ago

A solid that forms and separates from a liquid mixture is a.......

Chemistry

1 answer:

inna [77]4 years ago

4 0

A solid that forms and separates from a liquid mixture is a chemical change.

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At 50.7 kPa and 15.0 °C a sample of gas occupies 120 L. Using the Combined Gas Law, what pressure does it occupy at 236 L and 10

zheka24 [161]

Answer:

A volume of 236 L and a temperature of 10.0 ° C has a pressure of 25.3 kPa.

Explanation:

Boyle's law says that "The volume occupied by a certain gaseous mass at constant temperature is inversely proportional to pressure." Boyle's law is expressed mathematically as: P * V = k

Gay-Lussac's law can be expressed mathematically as follows:

$\frac{P}{T} =k$

This law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.

Finally, Charles's Law consists of the relationship between the volume and the temperature of a certain amount of ideal gas, which is kept at a constant pressure. This law is a law that says that when the amount of gas and pressure are kept constant, the quotient between the volume and the temperature will always have the same value:

$\frac{V}{T} =k$

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

$\frac{P*V}{T} =k$

Studying two different states, an initial state and a final state, you have:

$\frac{P1*V1}{T1} =\frac{P2*V2}{T2}$

In this case:

P1= 50.7 kPa
V1= 120 L
T1= 15 C= 288 K (being 0 C= 273 K)
P2= ?
V2= 236 L
T2= 10 C= 283 K

Replacing:

$\frac{50.7 kPa*120 L}{288 K} =\frac{P2*236 L}{283 K}$

Solving:

$P2=\frac{283 K}{236 L} *\frac{50.7 kPa*120 L}{288 K}$

P2= 25.3 kPa

A volume of 236 L and a temperature of 10.0 ° C has a pressure of 25.3 kPa.

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3 years ago

How many calories are required to boil 75 grams of water not in sig figs

Norma-Jean [14]

Well, each ml of water requires one calorie to go up 1 degree Celsius, so this liter of water takes 1000 calories to go up 1 degree Celsius. (There are 1000 ml, each of which needs to have its temperature raised.)

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3 years ago

QUESTION 24 Calculate [H 30+] of a solution with a pH of 2.14.

sleet_krkn [62]

Answer:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH).

I hope what I just explained is enough .

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3 years ago

The elements in Period 5 on the Periodic Table are arranged from left to right in order of(1) decreasing atomic mass(2) decreasi

RUDIKE [14]

Going from left to right, they are ordered by increase in atomic number

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3 years ago

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A solution of pH 3 was mixed with a solution of pH 9. What is the final pH could be ?

chubhunter [2.5K]

The solution of which contains of PH 3 called acidic medium which is more stronger acid called HCl when reacts to the stronger base base NaOH forms the acid base reaction .

According to acid base equation you consider ph5 as PH 9 if you understand it then tell me below

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3 years ago