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Anton [14]
3 years ago
8

B) Explain three ways by which water can be purified in the home

Chemistry
1 answer:
frosja888 [35]3 years ago
6 0

Explanation:

Water can be purified from through...

Filtration - This involves the use of filter paper to remove solid objects found in water.

Boiling - This involves keeping water at 100 deg celcius for a while through application of heat and this kills microorganisms in the water.

Addition of alum - Alum causes very fine and small particles that are suspending in water to stick together making them large enough to be removed through filtration.

Chemicals used in water treatment...

Chlorine - Chlorine is used to kill bacteria, viruses and other disease causing pathogens found in water

That's all I know...

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Wood and a cement block are considered to be transparent and are good conductors of electricity.
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Answer:

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A 0.35 L balloon found at 19 C is heated in an oven to 250 C. What is the new volume of the balloon?
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Answer:

V = 0.63 L

Explanation:

To solve this problem, we need to use the Charle's law which is a law that involves temperature and volume, assuming we have a constant pressure. The problem do not state that the pressure is being altered, so we can safely assume that the pressure is constant (Maybe 1 atm).

Now, as the pressure is constant, the Charle's law is the following:

V₁ / T₁ = V₂ / T₂   (1)   V is volume in Liter, and T is temperature in Kelvin.

Using this law with the given data, we solve for V₂:

V₂ = V₁T₂ / T₁

Before we use this expression, let's convert the temperatures to Kelvin:

T₁ = 19 + 273 = 292 K

T₂ = 250 + 273 = 523 K

Now, let's calculate the volume of the balloon:

V₂ = 0.35 * 523 / 292

<h2>V₂ = 0.63 L</h2>
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Explanation:

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