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lyudmila [28]
3 years ago
14

a rock with a mass of 130.0 grams placed in 30.o mL of water. The water level rises to 75.0 mL. What is the density of the rock?

Chemistry
1 answer:
vivado [14]3 years ago
5 0

Answer: 2.88888889

Explanation:

                     1. Density = mass/volume.

                     2. Density = 130/45

                     3. 130/45 = 2.88888889

                     4. Density = 2.88888889

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Answer:

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Explanation:

Hello there!

In this case, according to the balanced chemical reaction:

I_2+Br_2\rightarrow 2IBr

It is possible to set up the following equilibrium expression:

K=\frac{[IBr]^2}{[I_2][Br_2]} =0.0110

Whereas the the initial concentrations of both iodine and bromine are 0.50 M; and in terms of x (reaction extent) would be:

0.0110=\frac{(2x)^2}{(0.50-x)^2}

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[IBr]=2x=2*0.0249M=0.049M

Regards!

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