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lozanna [386]
3 years ago
6

Which of the following is an example of a compounds?

Chemistry
1 answer:
wlad13 [49]3 years ago
5 0

Answer:b.CaCl2

Explanation:

A compound is  a substance resulting when two or more elements  are are chemically bonded together either ionically or covalently in a fixed ratio.

From the given options we can see that the only compound there  is CaCl2 which is an ionic compound in the fixed  ratio of one calcium ion to two chloride ions.

Other options , Cu,Na and Nd are merely pure substance---Elements

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Answer:

6.97 atm was the equilibrium pressure of HBr .

Explanation:

The value of the equilibrium constant =K_p=1.65\times 10^3

H_2+Br_2\rightleftharpoons 2HBr

Initially:

0             0                 7.10 atm

At equilibrium

x              x                 (7.10-2x)

The expression of equilibrium constant can be written as:

K_p=\frac{p_{HBr}}{p_{H_2}\times p_{Br_2}}

1.65\times10^3=\frac{(7.10-2x)}{x^2}

Solving for x:

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6.97 atm was the equilibrium pressure of HBr .

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(c) ammonium carbonate + lead nitrate ? Step-by-step solution Step 1 of 3 v Step 2 of 3 v Step 3 of 3 ^ c) The ions formed in so
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<u>Answer:</u> The net ionic equation is written below.

<u>Explanation:</u>

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The chemical equation for the reaction of ammonium carbonate and lead nitrate is given as:

(NH_4)_2CO_3(aq.)+Pb(NO_3)_2(aq.)\rightarrow PbCO_3(s)+2NH_4NO_3(aq.)

Ionic form of the above equation follows:

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The net ionic equation for the above reaction follows:

Pb^{2+}(aq.)+CO_3^{2-}(aq.)\rightarrow PbCO_3(s)

Hence, the net ionic equation is written above.

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