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Bess [88]
3 years ago
14

An 82.0 g sample of hydrated magnesium sulfate (MgSO4) is heated to constant mass of 40.1 grams. What is the formula for the hyd

rate?
Chemistry
1 answer:
Ket [755]3 years ago
8 0

Answer:

MgSO4.7H2O

Explanation:

The heating removes all the water (H2O) in the crystal.

The mass of the water removed = 82-40.1 = 41.9 grams.

The formula of the hydrated salt = MgSO4. xH2O

The ratio in of the masses of MgSO4 : H2O =  40.1 : 41.9

Dividing these by the molar masses we get

40.1/ 120.4 to  41.9 / 18.016

= 0.33 : 2.33

= 1 : 7.

So there are 7 water molecules n the hydrate.

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KIM [24]
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5 0
3 years ago
Chloroform is a liquid once used for anesthetic. What is the volume of 5.0 g of chloroform? The density of chloroform 1.49 g/mL
mario62 [17]

Answer:

3.3557047 mL

Explanation:

The density can be found using the following formula:

d=\frac{m}{v}

Let's rearrange the formula to find the volume, v.

d*v=\frac{m}{v}*v

d*v=m

\frac{d*v}{d} =\frac{m}{d}

v=\frac{m}{d}

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m= 5g \\d= 1.49 g/mL

Substitute the values into the formula.

v=\frac{5g}{1.49 g/mL}

Divide. When we divide, the grams, or g, in the numerator and denominator will cancel out.

v= \frac{5}{1.49}mL

v=3.3557047 mL

The volume of 5 grams of chloroform is 3.3557047 milliliters

4 0
3 years ago
What is the Molar mass of Cu2So4
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6 0
3 years ago
Read 2 more answers
Will give brainliest to best answer..
Tasya [4]
I have attached the answer here. hope this helps!

let me know if you have any question

6 0
3 years ago
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