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3 years ago

14

What's a standard unit of measurement?

1 answer:

pishuonlain [190]3 years ago

8 0

A standard unit of measurement is inches.

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Antibiotics do not reduce the number of helpful and harmful bacteria in the microbiome.

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false; the purpose of antibiotics is to kill bacteria

Explanation:

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4 years ago

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How can you tell if an element has been oxidized or reduced in a reaction?

fomenos

Gaining of electrons is reduction and loss of electrons is oxidation.

<em>Hope this helped! :)</em>

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4 years ago

Define Transportation plants:<br><br> Define Respiration Plants:

jonny [76]

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3 years ago

What is the difference between a Group/Family and a period on the Periodic Table?

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3 years ago

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A mixture initially contains A, B, and C in the following concentrations: [A] = 0.650 M, [B] = 1.35 M, and [C] = 0.300 M. The fo

dimaraw [331]

<u>Answer:</u> The value of $K_c$ for given reaction is 0.465

<u>Explanation:</u>

We are given:

Initial concentration of A = 0.650 M

Initial concentration of B = 1.35 M

Initial concentration of C = 0.300 M

Equilibrium concentration of A = 0.550 M

Equilibrium concentration of B = 0.400 M

For the given chemical equation:

$A+2B\rightarrow C$

<u>Initial:</u> 0.65 1.35 0.30

<u>At eqllm:</u> 0.65-x 1.35-2x 0.30+x

Evaluating the value of 'x'

$0.650-x=0.550\\\\x=0.100$

So, equilibrium concentration of B = 1.35 - 2x = [1.35 - 2(0.100)] = 1.15 M

Equilibrium concentration of C = (0.30 + x) = (0.300 + 0.100) = 0.400 M

The expression of $K_c$ for above equation follows:

$K_c=\frac{[C]}{[A][B]^2}$

Putting values in above equation, we get:

$K_c=\frac{0.400}{0.650\times (1.15)^2}\\\\K_c=0.465$

Hence, the value of $K_c$ for given reaction is 0.465

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4 years ago