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Arada [10]
3 years ago
6

A box has a length of 45 centimeters, a width of 7 centimeters, and a height of 15 centimeters. What is the volume? A sample of

water has a mass of 14 grams and a volume of 2 cubic centimeters? What is the density of water
Chemistry
1 answer:
andreev551 [17]3 years ago
8 0

Answer:

Hey there!

The volume of the box would be 45(7)(15), or 4725 cm^3.

The density of any object is the mass divided by volume. Thus, the density of the water would be 14/2, or 7 g/cm^3.

Let me know if this helps :)

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4 years ago
10. A small helium tank claims to be able to fill 30 balloons to a volume of 3.15 L
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Taking into account the Boyle's law, 3.377 L of helium the tank will be able to  produce at a pressure of 94.2 kPa.

The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature, and moles.

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In this case, you know:

  • P1= 101 kPa
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Replacing in Boyle's law:

101 kPa× 3.15 L= 94.2 kPa× V2

Solving:

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<u><em>V2= 3.377 L</em></u>

In summary, 3.377 L of helium the tank will be able to  produce at a pressure of 94.2 kPa.

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