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3 years ago

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What is the measurement 111.009 mm rounded off to four significant digits? a. 111 mm b. 111.0 mm c. 111.01 mm d. 110 mm Please s

elect the best answer from the choices provided

1 answer:

faltersainse [42]3 years ago

3 0

Four significant figures would be B. Because 0's before the decimal are not important, but 0's after the decimal are.

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djyliett [7]

Answer:

Average rate of reaction expressed in moles H₂ consumed per liter per second = 0.0025 M/s = 0.0025 mol/L.s

Explanation:

The complete, correct Question, is presented in the attached image to this answer.

The average rate of reaction in terms of the reactant is defined as the total amount of reactant consumed over a period of time divided by total period of time.

Mathematically,

Average rate of reaction = (change in concentration of H₂ over a period of time) ÷ (total period of time)

Average rate of reaction = (-ΔC)/(Δt)

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change in concentration of H₂ = -ΔC

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Time = Δt = 4 - 0 = 4.0 s

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change in concentration of Cl₂ = -ΔC

= -(0.04 - 0.05) = 0.01 M

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Average rate of reaction = (0.01/4) = 0.0025 M/s = 0.0025 mol/L.s

Hope this Helps!!!

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