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alukav5142 [94]
3 years ago
8

Which of the following elements is an alkali metal?

Chemistry
2 answers:
zhuklara [117]3 years ago
7 0
The answer is Potassium (K)
Advocard [28]3 years ago
5 0
Potassium
The alkali metals are the ones that react and explode in water
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Which reaction is the opposite of a decomposition reaction?
tresset_1 [31]

Answer:

B) Synthesis reaction

Explanation:

synthesis reactions because they take apart larger molecules or compounds

Hope that helps

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3 years ago
What is the solubility of argon (in units of grams per liter) in water at 25 °C, when the Ar gas over the solution has a partial
beks73 [17]

Answer:

0.02405 g/L is the solubility of argon  in water at 25 °C.

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{Ar}=K_H\times p_{gas}

where,

K_H = Henry's constant = 1.40\times 10^{-3}mol/L.atm

p_{Ar} = partial pressure of carbonated drink = 0.51atm

Putting values in above equation, we get:

C_{Ar}=1.40\times 10^{-3}mol/L.atm\times 0.430 atm\\\\C_{Ar}=6.02\times 10^{-4}mol/L

Molar mass of argon = 39.95 g/mol

Solubility of the argon gas :

6.02\times 10^{-4}mol/L\times 39.95 g/mol=0.02405 g/L

0.02405 g/L is the solubility of argon  in water at 25 °C.

5 0
4 years ago
Oceń prawdziwość podanych informacji w układzie okresowym pierwiastki chemiczne są złożone według NIK to jących się liczbą atomo
cluponka [151]
Wow. What language is this?
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3 years ago
How does evaporation lead to precipitation​
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1.evaperation

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3.precipatation

Explanation:

So I guess condenstation leads to precipatation-

5 0
3 years ago
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