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3 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:

TEA [102]3 years ago

5 0

Answer:

Reverse Osmosis and UV Treatment

Explanation:

Reverse Osmosis, commonly known as RO, process is very effective in removing salt content from water. This process is known as desalination. IN RO, a partially permeable membrane is used to remove unwanted molecules, ions, and large particles. RO will take care of both desalination and purification of water.

Further UV treatment can be done to kill any remaining microorganisms as these microorganisms can not withstand UV radiation.

KATRIN_1 [288]3 years ago

4 0

Answer:

The answer is reverse osmosis!

Explanation:

I chose this on a test and got it right

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Which technique(s) are appropriate to completely factor the expression? A) Factor as a difference of squares. B) Factor out the

Ilya [14]

Answer:

The greatest common factor (GCF) is the greatest factor that is common to two or more numbers (they share it). The greatest common factor of two (or more) numbers is the product of all the prime factors the numbers have in common.

Explanation:

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2 years ago

Which is developed during the process of technology design

Tatiana [17]

Answer:

solution

Explanation:

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3 years ago

A mole of gas at 0.0oC and 760. torr occupies 22.4 L. What is the volume of this gas at 25.oC and 760. torr

daser333 [38]

Answer:

Explanation:

Given

Temperature of gas at First stage $T_1=0^{\circ}C\approx 273\ K$

Pressure of gas at First stage $P_1=760\ torr$

Volume Occupies $V_1=22.4\ L$

If the Pressure and Temperature at second stage is

$P_2=760\ torr$

$T_2=25^{\circ}C\approx 298\ K$

Using ideal gas Equation

$PV=nRT$

where P=Pressure

V=volume

R=Universal Gas constant

T=Temperature

n=no of moles

as n and R is constant therefore

$\frac{PV}{T}=constant$

thus $\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

$V_2=\frac{760}{760}\times \frac{298}{273}\times 22.4$

$V_2=24.45\ L$

8 0

3 years ago

a 1.05 kg water bottle is sitting on the teacher's desk it is .20 m tall and has a radius of .03 m find the force that the water

arsen [322]

The force applied would be 1.05*9.8 = 10.3 N
the pressure is equal to F/a
area will be πr^2 = 0.002826
thus pressure will be = 10.3/0.002826= 3644.72 N/m^2

4 0

3 years ago

Hii guys!! ~ i've comeback again!! could you please help me with an assignment?? i have a couple of i know questions!! thank you

Nimfa-mama [501]

Answer:

Speed = 10.24 m/s.

Explanation:

<u>Given the following data;</u>

Distance = 100m

Time = 9.77

To find her speed;

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

$Speed = \frac{distance}{time}$

Substituting into the equation, we have;

$Speed = \frac{100}{9.77}$

<em>Speed = 10.24 meter per seconds. </em>

5 0

3 years ago