3 years ago

Subjective questions

Chemistry

1 answer:

BARSIC [14]3 years ago

8 0

Answer:

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Escribe 4 unidades de temperatura

olchik [2.2K]

Answer:

esta nublado

Explanation:

3 0

3 years ago

Circle the odd one out and give reason of your choices <br>copper <br>iron <br>pencil <br>rubber

Ivanshal [37]

Rubber.

Iron, copper, and graphite are minerals. Rubber is not a mineral.

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3 0

3 years ago

A sealed 1.0L flask is filled with 0.500 mols of I_2 and 0.500 mols of Br_2. When the container achieves equilibrium the equilib

DochEvi [55]

Answer:

[IBr] = 0.049 M.

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:

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

Which can be solved for $x$ to obtain two possible results:

$x_1=-0.0277M\\\\x_2=0.0245M$

Whereas the correct result is 0.0245 M since negative results does not make any sense. Thus, the concentration of the product turns out:

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

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7 0

2 years ago

a friend is trying to describe a material to you. which of the following is not a description of a physical property of the subs

Masja [62]

The answer for it is C. when you mix it with water it fizzes

4 0

3 years ago

What is the element of H₂O

slega [8]

Answer:

It’s water bro

Explanation:

6 0

3 years ago