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Studentka2010 [4]
3 years ago
15

When parallel light rays exit a convex lens, they .

Chemistry
2 answers:
Alexxx [7]3 years ago
6 0
When the parallel light rays exit a convex lens, it comes away or diverge.
Vitek1552 [10]3 years ago
6 0

Converge

I took the assignment

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When solid calcium carbonate is heated, it decomposes according to the reaction: CaCO3(s) ⇄ CaO(s) + CO2(g) Kp = 0.50 A sample o
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Explanation:

Relation between K_{p} and K_{c} is as follows.

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Now, putting the given values into the above formula as follows.

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                 0.5 = K_{c} \times (8.314 \times 1103)^{1}

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ICE table for the given reaction will be as follows.

                  CaCO_{3}(s) \rightleftharpoons CaO(s) + CO_{2}(g)

Initial:           c                        -          -  

Equilibrium:  (c - x)               x         x

       K_{c} = [CO_{2}]

          5.452 \times 10^{-3} = x

Hence, same amount of CaO is produced.

Moles of CaO = 5.452 \times 10^{-3}

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Thus, we can conclude that 0.310 g of CaO produced when equilibrium is established.

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Answer:

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when they react with cold water they produce a metal hydroxide and hydrogen gas

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