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Rasek [7]
3 years ago
12

Molarity is a quantity in chemistry that has the unit of moles per liter (mol/l): if a sample of Chemical X consists of 32.22 mo

les and has a volume of 850mL, what is the molarity of this sample?
Chemistry
1 answer:
Step2247 [10]3 years ago
4 0

Answer:

Molarity ≈ 38 mol/L

Explanation:

850 mL *(1L/1000 mL)= 0.85 L

32.22 mol /0.85 L ≈ 37. 91 mol/L ≈  38 mol/L = 38 M

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A liquid sample, with a density of .0915 g/mL has a mass of 17.7 grams.
Arlecino [84]

The relation between density, mass and volume is

Density = \frac{Mass}{Volume}

1) to calculate = volume

given:

Density = 0.0915 g/ mL

mass = 17.7 grams

formula used:

Density = \frac{Mass}{Volume}

Thus

Volume Volume = \frac{Mass}{Density} = \frac{17.7 g}{0.915 \frac{g}{mL} }  = 193.44 mL

Answer: 193.44 mL

2) the mass of sample will be

mass = density X volume = 0.0915\frac{g}{mL} X 76.5 mL = 6.99 = 7 g

Answer: 7 g

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3 years ago
Why is it important to do further investigations to determine if a chemical change really occurred?
KatRina [158]

Answer:

x

Explanation:

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3 years ago
A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24
Degger [83]
  The   partial  pressure of hydrogen is 0.31  atm

calculation

find the number of  hydrogen   moles the container, that is

25/100  x 6.4  =1.6 moles of hydrogen

find the  partial pressure for hydrogen  in 1.6 moles

that is   6.4  moles=  1.24 atm
            1.6  moles= ?

by  cross  multiplication

1.6moles  x1.24  atm/ 6.4 moles=  0.31 atm
6 0
3 years ago
Chemical weathering takes place fastest in a _______ and _________ climate​
ser-zykov [4K]
Possibly wet and unstable
3 0
3 years ago
Why are scientific models important in the study of science? A. They are useful only for teaching students about science. B. The
madreJ [45]
The correct answer should be B.
The correct answer would be B.
4 0
3 years ago
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