2 years ago

2)

Chemistry

1 answer:

Marina CMI [18]2 years ago

4 0

Answer:

A.moles of solute per liter of solution

Explanation:

the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams.

:-befrank

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the mass number of a chromium Atom is 52 and it has 24 protons. How many neutrons does this atom have?

omeli [17]

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3 years ago

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How many grams of KNO3 would recrystallize from 100 g of water, if a saturated solution were cooled from 50 degrees celcius to 2

Lelechka [254]

Answer:

$m_{cryst}=58g$

Explanation:

Hello there!

In this case, according to the attached solubility chart, it is possible for us to realize that about 88 grams of KNO3 are soluble at 50 °C but just 30 grams are soluble at 20 °C in the same 100 g of water.

In such a way, the crystalized mass of this solute can be calculated by subtracting the mass at 50 °C and the mass at 20 °C:

$m_{cryst}=88g-30g\\\\m_{cryst}=58g$