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timama [110]
2 years ago
12

Read the statement about Mount Vesuvius. Mount Vesuvius erupted in 79 CE and destroyed the ancient city of Pompeii. Why is the s

tatement free of bias? It is based on opinion. It is a fair statement of fact. It expresses one specific view. It exaggerates details of the event. Explain good or ill report
Chemistry
1 answer:
Mamont248 [21]2 years ago
6 0

Answer:

B

Explanation:

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Change in freezing point = -1.86 C/m X 0.743 m X 2 = -2.76 C

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0.0200 M Fe3+ is initially mixed with 1.00 M oxalate ion, C2O42-, and they react according to the equation: Fe3+(aq) + 3 C2O42-(
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Answer : The concentration of Fe^{3+} at equilibrium is 0 M.

Solution :  Given,

Concentration of Fe^{3+} = 0.0200 M

Concentration of C_2O_4^{2-} = 1.00 M

The given equilibrium reaction is,

                            Fe^{3+}(aq)+3C_2O_4^{2-}(aq)\rightleftharpoons [Fe(C_2O_4)_3]^{3-}(aq)

Initially conc.       0.02         1.00                   0

At eqm.             (0.02-x)    (1.00-3x)                x

The expression of K_c will be,

K_c=\frac{[[Fe(C_2O_4)_3]^{3-}]}{[C_2O_4^{2-}]^3[Fe^{3+}]}

1.67\times 10^{20}=\frac{(x)^2}{(1.00-3x)^3\times (0.02-x)}

By solving the term, we get:

x=0.02M

Concentration of Fe^{3+} at equilibrium = 0.02 - x = 0.02 - 0.02 = 0 M

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4 0
3 years ago
A friend tells you he read on a web site that earth is getting smaller, What can you tell him that shows Earth's size is not cha
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U can show him that Earth isn't getting smaller, because things WOULD be getting smaller, and our houses would be getting smaller, IF everything shrunk WITH Earth.
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In the reaction 2 H2 + O2m 2 H20, how
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Answer:

Option F. 3moles

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A scientist would most likely need to update her model when it no longer supports the latest results.
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