All categories

4 years ago

Celina has a water sample that’s contaminated with salt and microorganisms. Which method should she use to purify the water?

Physics

2 answers:

agasfer [191]4 years ago

8 0

Answer: evaporation

Explanation:

The boiling of water till it evaporate allow the salt to remain in the pan and the high temperature kills the microorganisms

She should collect the vapor with a cooking pipe in another container

Dmitry_Shevchenko [17]4 years ago

7 0

Celina should perform the following method to get pure water:

Boil the water in a pan, as the water boils it changes into gas (water vapours) these vapours should be cooled down through the process of condensation which changes gas into liquid form, Through this process germs would be killed due to high temperature and the salt will remain in the pan as salt has higher boiling point than water,

You might be interested in

In 3 seconds a car moving in a straight line increases its speed from 22.4 m/s to 29.1 m/s while a truck increases its speed fro

ANTONII [103]

Is there a picture?

6 0

3 years ago

If silicic rock is found in a core sample, what evidence does this provide about the rock’s location?

iragen [17]

If silicic rock is found in a core sample, its location is likely underneath an ocean or a mountain.

Answer: Option A

<u>Explanation:</u>

Silicic rock are the type of rocks which are made up of silica and are located at the crust of the earth which is more likely to the core lying underneath and it extends all the way up to 30 km.

Its density is around 2 gm / cm^3 .One of the common example of silica is granite. So if the silicic rocks are found in a core it is more likely underneath the ocean or mountain.

3 0

3 years ago

Read 2 more answers

What is photosynthesis, food chain, evaporation and passive smokers?

navik [9.2K]

Answer:

Photosynthesis: the process where plants convert light energy into sugar, for food

Food chain: a series of organisms showing which organisms eat each other

Explanation:

7 0

3 years ago

Which statement best describes scientists who contributed to the current

IRINA_888 [86]

Answer:A.

Explanation:

3 0

3 years ago

a 230-newton box rests on a plank 5 meters long. One end is 1.2 meters higher than the other end. Find the components of the for

NISA [10]

Answer:

55.3 N, 223.3 N

Explanation:

First of all, we can find the angle of the inclined plane.

We have:

L = 5 m the length of the incline

h = 1.2 m is the height

We also have the relationship

$h = L sin \theta$

where $\theta$ is the angle of the incline. Solving for the angle,

$\theta= sin^{-1} (\frac{h}{L})=sin^{-1} (\frac{1.2 m}{5 m})=13.9^{\circ}$

Now we can find the components of the weight of the box, which is the force that the box exerts on the plank. Calling W = 230 N the weight of the box, we have:

- Component parallel to the incline:

$W_{par} = W sin \theta = (230 N)(sin 13.9^{\circ}) =55.3 N$

- Component perpendicular to the incline:

$W_{per} = W cos \theta = (230 N)(cos 13.9^{\circ}) =223.3 N$

4 0

3 years ago