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denis-greek [22]
3 years ago
7

What are two main ways that water is being polluted or wasted

Chemistry
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

Chemical waste from factories is sometimes dumped into rivers and lakes, or directly into the ground. Pesticides (chemicals that kill insects) applied to farmland enter surface water and groundwater, often in large quantities. Leaks from underground storage tanks for liquids like gasoline go directly into groundwater.

Explanation:

Hope it helps! Correct me if I am wrong!

Im sure about my answer!

If you dont mind can you please mark me as brainlest?

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Where would you expect to find carbon? Check all that apply.
dezoksy [38]

Answer:

in all living organisms

in organic compounds

Explanation:

edge

3 0
4 years ago
How many grams of NaCl should be added to 250 grams of waterto<br> make a 0.40 m solution?
brilliants [131]

Answer:

5.85 grams of NaCl should be added to 250 grams of water to  make a 0.40 m solution.

Explanation:

molality=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{ Mass of solvent (kg)}}

Mass of NaCl =x

Molar mass of NaCl = 58.5 g/mol

Molality of the solution = 0.40 m

Mass of the solvent = 250 g = 0.250 kg (1g = 0.001 kg)

0.40 m=\frac{x}{58.5 g/mol\times 0.250 kg}

x=0.40 m\times 58.5 g/mol\times 0.250 kg=5.85 g

5.85 grams of NaCl should be added to 250 grams of water to  make a 0.40 m solution.

7 0
3 years ago
What happens to a ionic compound when it has fully been dissolved in water?
Zepler [3.9K]
We'll look at what happens<span> when you </span>dissolve ionic<span> and covalent </span>compounds<span> in </span>water<span>. </span>Ionic compounds<span> break apart into the </span>ions<span> that make them up, a process called dissociation, while covalent </span>compounds only break into the molecules, not the individual atoms.<span>When you immerse an </span>ionic compound<span> in </span>water<span>, the ions are attracted to the </span>water <span>molecules, each of which carries a polar charge. If the attraction between the ions and the </span>water <span>molecules </span>is<span> great enough to break the bonds holding the ions together, the compound </span><span>dissolves</span>
3 0
3 years ago
The density of helium is 0.17 g/L. What Is the mass of helium in a 5.4 L helium balloon? (2 sig figs) *
ioda

Answer:

The correct answer is 0.92 g

Explanation:

The density is defined as the mass per unit of volume:

Density= mass/volume

From the data provided:

volume= 5.4 L

density= 0.17 g/L

Thus, to calculate the mass of helium:

mass= density x volume = 0.17 g/L x 5.4 L= 0.918 g ≅ 0.92 g

6 0
3 years ago
HELP ASAP!!!!! milk of magnesia has the chemical formula Mg(OH)2. what is the mass of 3.2 moles of milk of magnesia? the molar m
Marysya12 [62]
Mg(OH)2

Mg: 1
O: 2
H: 2

Mg. O H
24.3g 32g. 2

58.3g in 1 mol of Mg(OH)2

3.2mol of Mg(OH)2 x 58.3g of Mg(OH)2
-------------------------
1 mol of Mg(OH)2

= 186.56 g of Mg(OH)2 in 3.2 mols of Mg(OH)2
4 0
4 years ago
Read 2 more answers
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