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GarryVolchara [31]
3 years ago
9

What happens a to the energy that is lost when water freezes

Chemistry
1 answer:
Marianna [84]3 years ago
5 0
The energy that is lost becomes free energy.
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Which will most likely result if the levels of dissolved oxygen decrease in a body of water?
Lerok [7]

Answer:

B) Native fish species will begin to decrease in population size.

Hope it helps:D

5 0
3 years ago
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Please help me. We dally transform energy in our homes and schools into light, sound, heat, etc. what is the most common energy
Irina-Kira [14]

I hope this helps sorry if it doesn’t

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3 years ago
Farmers who raise cotton once used arsenic acid, H₃AsO₄, as a defoliant at harvest time. Arsenic acid is a polyprotic acid with
Stels [109]

Explanation:

The reaction equation will be as follows.

      H_{3}AsO_{4} \rightleftharpoons H_{2}AsO^{-}_{4} + H^{+}

Hence, the expression for K_{a} is as follows.

            K_{a} = \frac{[H_{2}SO^{-}_{4}][H^{+}]}{[H_{3}AsO_{4}]}

Let us assume that the concentration of both [H_{2}AsO^{-}_{4}] and [H^{+}] is x.

           2.5 \times 10^{-4} = \frac{x \times x}{0.5}

                          x = 0.01118034

This means that the concentration of [H^{+}] is 0.01118034.

Since, we know that the relation between pH and concentration of hydrogen ions is as follows.

              pH = -log [H^{+}]

                    = -log (0.01118034)

                    = 1.958

Thus, we can conclude that the pH of a 0.500 M solution of arsenic acid is 1.958.

6 0
3 years ago
What elements on the periodic table are most likely to form molecular compounds?
Yuri [45]
Alkaline Earth Metals and Alkali Reactive metals because they need more electrons to acquire octet.
4 0
3 years ago
2NaOH+CO2----->Na2CO3+H2O
kondaur [170]

Answer:

13.2 g Na2CO3

Explanation:

Convert 10.0 g NaOH to mol.

10.0 g x 1 mol/39.997 g = 0.250 mol

Use mol ration given by the equation: 2 mol NaOH to 1 mol Na2CO3

0.250 mol NaOH x 1 mol Na2CO3/2 mol NaOH = 0.125 mol Na2CO3

Finally, convert the moles of Na2CO3 to grams.

0.125 mol Na2CO3 x 105.99 g/1 mol = 13.2 g

8 0
3 years ago
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