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Anton [14]
3 years ago
12

Which of these processes occur when water changes to ice?

Chemistry
2 answers:
maxonik [38]3 years ago
6 0
A Physical reaction occurs as we freeze the water into ice, and physical changes are changes that can be undone.
kramer3 years ago
6 0
Waht are the options
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Balance the half reaction, c5o5 2-(g) â co3 2-(aq), taking place in basic media. which answer below describes how many hydroxide
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Answer is: 20 ions, left side.

Unbalanced half reaction: C₅O₅²⁻(g) → CO₃²⁻(aq).

1) There are 5 carbon atoms on the left side of half reaction and 1 carbon atom on right, so first add coefficient 5 in fron of carbon dioxide to balance carbon atoms: C₅O₅²⁻(g) → 5CO₃²⁻(aq).

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Balanced half reaction: 20OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + 10H₂O(l).

7 0
3 years ago
Argon makes up 0.93% by volume of air. Calculate its solubility (in mol/L) in water at 20°C and 1.0 atm. The Henry's law constan
ivolga24 [154]

Answer : The solubility is, 1.4\times 10^{-5}mol/L

Explanation :  Given,

k_H = Henry's law constant  of argon = 1.5\times 10^{-3}mol/L.atm

First we have to calculate the pressure of argon.

Pressure of argon = 1.0atm\times \frac{0.93}{100}

Pressure of argon = 0.0093 atm

Now we have to calculate the solubility.

As, the solubility of argon in 1 atm pressure = 1.5\times 10^{-3}mol/L

So, the solubility of argon in 0.0093 atm pressure = \frac{0.0093atm}{1atm}\times 1.5\times 10^{-3}mol/L

= 1.4\times 10^{-5}mol/L

Thus, the solubility is, 1.4\times 10^{-5}mol/L

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