All categories

2 years ago

1 where does drinking water come from? How might it become polluted or contaminated?

1 answer:

6 0

Answer: ABOUT 71% PERCENT OF EARTH'S SURFACE IS WATER COVERED,OUT OF THAT ONLY 2.5 %IS FRESH WATER.WE GETS DRINKING WATER FROM CLEAN RIVERS ,LAKES AND EVEN GROUND WATER. WE ALSO FILTERS THE SEA WATERS TOO.

WE HUMANS ARE THE ONE WHO ACTUALLY POLLUTE THE WATER BODIES, BECAUSE WE THROW DOMESTIC AND INDUSTRY WASTES IN THE WATER BODIES AND THE AQUATIC ANIMALS ARE DYING BECAUSE OF THIS ACT. IF WE SAVE THE WATER BODIES THEN THERE WOULD NO BE ANY POLLUTION etc

Explanation:

You might be interested in

Help please! -A compound contains 0.013 moles of carbon, 0.039 moles of hydrogen and 0.0065 moles of oxygen. Determine the empir

stepan [7]

A) C2H6O1

To find the emperical formula, divide each mole value by the smallest

For carbon, 0.013/0.0065 = 2

For hydrogen, 0.038/0.0065= 6

For oxygen, 0.0065/0.0065= 1

Emperical formula = C2H6O1

8 0

2 years ago

Read 2 more answers

The escape of molecules from the surface of a liquid is known as _____.

RUDIKE [14]

Its c. evaporation :)

8 0

3 years ago

Read 2 more answers

As the sun heats the surface of the ocean, two layers of water result. What separates the layers.

pychu [463]

Question: As the sun heats the surface of the ocean, two layers of water result. What separates the layers.?

Answer: The Thermocline

Hope this helps!.

~~~~~~~~~~~~~~~~~~~

~A.W~ZoomZoom44

4 0

3 years ago

Identify the units used to measure volume mass.

Strike441 [17]

Answer:

The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass, just as the U.S. customary system uses feet, quarts, and ounces to measure these.

Volume: 1 liter is a little more than 1 quart

Mass: 1 kilogram is a little more than 2 pounds

Length: 1 centimeter is a little less than half an

Explanation:

3 0

1 year ago

PLEASE HELP ME I NEED HELP

Crazy boy [7]

Answer:

5 moles S x (36.02 g S/mole S) = 180.1 grams of S

Explanation:

The periodic table has mass units for every element that can be correlated with the number of atoms of that element. The relationship is known as Avogadro's Number. This number, 6.02x $10^{23}$ , is nicknamed the mole, which scientists found to be a lot more catchy, and easier to write than 6.02x $10^{23}$ . The mole is correlated to the atomic mass of that element. The atomic mass of sulfur, S, is 36.02 AMU, atomic mass units. But it can also be read as 36.02 grams/mole.

This means that 36.02 grams of S contains 1 mole (6.02x $10^{23}$ ) of S atoms.

This relationship holds for all the elements. Zinc, Zn, has an atomic mass of 65.38 AMU, so it has a "molar mass" of 65.38 grams/mole. ^5.38 grams of Zn contains 1 mole of Zn atoms.

And so on.

5.0 moles of Sulfur would therefore contain:

(5.0 moles S)*(36.02 grams/mole S) = 180.1 grams of S

Note how the units cancel to leaves just grams. The units are extremely helpful in mole calculations to insure the correct mathematical operation is done. To find the number of moles in 70 g of S, for example, we would write:

(70g S)/(36.02 grams S/mole S) = 1.94 moles of S. [Note how the units cancel to leave just moles]

4 0

1 year ago