Answer:
Explanation:
The formula for molality is:
There are 0.210 moles of KBr and 0.075 kilograms of pure water.
Substitute the values into the formula.
Divide.
The molality is <u>2.8 moles per kilogram</u>
Calculate the mass of a substance with a density of 1.98 g/mL and a volume of 265 mL.
1 answer:
Answer:
<h2>mass = 524.7 g</h2>Explanation:
The density of a substance can be found by using the formula
Making mass the subject we have
<h3>mass = Density × volume</h3>From the question
Density = 1.98 g/mL
volume = 265 mL
Substitute the values into the above formula and solve for the mass
That's
mass = 1.98 × 265
We have the final answer as
<h3>mass = 524.7 g</h3>Hope this helps you
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