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3 years ago

What mass of K2SO4 would you measure out to prepare 550 ml of a 0.76 M solution

2 answers:

5 0

The molecular weight of K2SO4 is 174.26 g/mole. The mass of K2SO4 required to make this solution is calculated in the following way.
550mL * (0.76mole/1000mL) * (174.26g/mole) = 72.84gram
<span>I hope this helps.</span>

yulyashka [42]3 years ago

5 0

Answer:

$m_{K_2SO_4}=72.84gK_2SO_4$

Explanation:

Hello,

In this case, by considering that the both the volume of the solution of potassium sulfate and its concentration are given, one solves for the required mass considering the following proportional factors related stoichiometrically:

$m_{K_2SO_4}=550mLsln*\frac{1Lsln}{1000mLsln}*0.76\frac{molK_2SO_4}{Lsln}*\frac{174.259gK_2SO_4}{1molK_2SO_4}\\ m_{K_2SO_4}=72.84gK_2SO_4$

Best regards.

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What is the pOH of .12 M HNO3.

Klio2033 [76]

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3 years ago

The Blue Giant of the Orient is the largest faceted sapphire in the world, with a mass of

vfiekz [6]

The volume of this sapphire in cubic centimeters is 24.4 cm^3

We have the following information;

Mass of the Blue Giant = 486.52 carats

Density of the blue giant = 3.98 g/cm3

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Since the density is given in g/cm3, we must convert the mass to grams.

We have the conversion factor; 5 carats = 1 g

So;

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= 97.30 g

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Learn more: brainly.com/question/6034174

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3 years ago

How much heat is absorbed by 20g granite boulder as energy from the sun causes its temperature to change from 10°C to 29°C? The

Nataly [62]

Given :

Mass of granite , m = 20 g .

Change in temperature , $\Delta T=29-10=19^oC$ .

Specific heat capacity of granite , $C=0.79\ J/g^oC$ .

To Find :

The heat absorbed by granite .

Solution :

We know , heat absorb is given by :

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sergejj [24]

Answer:

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Explanation:

Data

10 grams of Na, C, Pb, and Ne

Process

Calculate the moles of each element

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10 g of Na ------------------- x

x = 0.43 moles of Na

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10 g of Ne ----------------- x

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10 g of Cu -------------- x

x = 0.16 moles of Cu

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10 g of Pb -------------- x

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Answer:

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