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Shkiper50 [21]
3 years ago
6

"A student takes 152 mL of a 3.0M HCl solution and places it into a beaker. The student then adds enough water to the beaker to

make 750 mL. Calculate the molarity of this new solution."
Chemistry
1 answer:
Jet001 [13]3 years ago
7 0

Answer: I think it's 0.608

Explanation: (152×3.0)÷750=0.608

Also the number of moles of the first solution is .456, so if we apply that to the new solution we get .456÷.750=.608

Sorry if wrong

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<u>Explanation:</u>

The plastic sheet is in the form of cuboid. To calculate the volume of cuboid, we use the equation:

V=lbh

where,

V = volume of cuboid

l = length of cuboid = 10.0 m = 1000 cm     (Conversion factor: 1 m = 100 cm)

b = breadth of cuboid = 1.0 m = 100 cm

h = height of cuboid = 1 cm

Putting values in above equation, we get:

V=1000\times 100\times 1=10^5cm^3

To calculate mass of a substance, we use the equation:

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We are given:

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Volume of plastic sheet = 10^5cm^3

Putting values in equation 1, we get:

0.81g/cm^3=\frac{\text{Mass of plastic sheet}}{10^5cm^3}\\\\\text{Mass of plastic sheet}=8.1\times 10^4g

Hence, the mass of plastic sheet is 8.1\times 10^4g

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