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ratelena [41]
3 years ago
15

What is the volume of a sample that has a mass of 20 grams and density of 4 g/mL?

Chemistry
1 answer:
balandron [24]3 years ago
7 0

Answer:

<h2>5 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{20}{4}  \\

We have the final answer as

<h3>5 mL</h3>

Hope this helps you

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Answer:

The concentration of the murexide solution is 0.0000745 M

Explanation:

From Beer-Lambert's law,

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c = A/εl = 0.2865/(3847×1) = 0.0000745 mol/L

Hope this Helps!

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HF is a weak acid which in water, keeps this equilibrium

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K = ( [H₃O⁺] . [F⁻] ) / [HF] . [H₂O]

K . [H₂O] = ( [H₃O⁺] . [F⁻] ) / [HF]

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