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garik1379 [7]
3 years ago
10

A student measures the volume of a liquid in a graduated cylinder of 250 mL capacity, and finds the volume of the liquid to be 2

00 mL. The student transfers the liquid to a graduated cylinder with a capacity of 500 mL. What is the volume of the liquid in the 500 mL cylinder?
A. unknown

B. 100 mL

C. 200 mL

D. 500 mL
Chemistry
1 answer:
GREYUIT [131]3 years ago
6 0

Answer:

Option C = 200 mL

Explanation:

The volume of liquid remain same because students just transfer the liquid from the graduated cylinder with the capacity 250 mL to the graduated cylinder having the capacity of 500 mL. The volume of the liquid will remain same either it is in the large graduated cylinder or in a small graduated cylinder.

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Hydrogen 3 has a half life of 12.32 years a sample of h-3 weighing 3.02 grams is left for 15.0 years what will the final weight
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Answer:

The final mass of sample is 1.3 g.

Explanation:

Given data:

Half life of H-3 = 12.32 years

Amount left for 15.0 years = 3.02 g

Final amount = ?

Solution:

First all we will calculate the decay constant.

t₁/₂ = ln² /k

t₁/₂ =12.32 years

12.32 y =  ln² /k

k = ln²/12.32 y

k = 0.05626 y⁻¹

Now we will find the original amount:

ln (A°/A) = Kt

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ln (3.02 g/ A) = 0.8439

3.02 g/ A = e⁰°⁸⁴³⁹

3.02 g/ A = 2.33

A = 3.02 g/ 2.33

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The final mass of sample is 1.3 g.

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