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4 years ago

Why is it so difficult to obtain pure water

1 answer:

6 0

One big reason is that farmers use lot's of chemicals for their plants to grow and those chemicals can get into drinkable water. Another reason is that almost 96.5% of earth's water is salt water which is really undrinkable. Hope this helped you! :D

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Lake michigan holds 1.35 x 10^15 gallons of water

Tomtit [17]

Answer:

the answer is 1.35e+15

Explanation:

5 0

3 years ago

If 1/4 cups are in 1 serving jow many servings are in 4 cups

mote1985 [20]

Answer:

One serving is 1/4 cup therefore 1 cup would be 4 servings. Since we have 9 cups we would then multiply 9 x 4 and the answer would be 36 servings. You have a ratio of cups to serving, so 1/4 cup : 1 serving, or .

Explanation:

7 0

3 years ago

Solution

Debora [2.8K]

I want the old me no cap

8 0

3 years ago

Given: There are 39.95 grams of Argon (39.95 g/1 mole) and one mole has a volume of 22.4 Liters (1 mole/22.4 L). What is the vol

marta [7]

Answer:

$V_2=19.23L$

Explanation:

Hello,

In this case, by using the Avogadro's law which allows us to understand the volume-moles behavior as a directly proportional relationship:

$\frac{V_2}{n_2} =\frac{V_1}{n_1}$

We can compute the volume of 34.3 g of argon by representing it in mole as shown below:

$n_1=1 mol\\\\n_2=34.3g*\frac{1mol}{39.95g} =0.859mol$

Thus, we find:

$V_2=\frac{V_1*n_2}{n_1}=\frac{22.4L*0.859mol}{1mol} \\\\V_2=19.23L$

Best regards.

6 0

3 years ago

Gold has a density of 19.3g/cm3. If you have a gold bar with a volume of

marin [14]

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 19.3 g/cm³

volume = 44.9 cm³

The mass of the gold bar

mass = 19.3 × 44.9 = 866.57

We have the final answer as

Hope this helps you

8 0

3 years ago