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Aloiza [94]
3 years ago
11

What do we call the harmful substances that have a negative effect on the environment? *

Chemistry
2 answers:
nikitadnepr [17]3 years ago
7 0

Answer:

Pollutants

Explanation:

Pollution is trash and smoke in our atmosphere so i think it would be Pollutants. hopefully that helps

kumpel [21]3 years ago
3 0

Answer: A.  Pollutants

Explanation:

"A pollutant is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. ..." - Wikipedia

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Balance the following equation:<br> K+ H2O + H2 + KOH
alex41 [277]

Answer:

2K + 2H2O → H2 + 2KOH

Explanation:

Find how many atoms you have on both sides then add 2 to both sides.

Reactant:       Products:

K: 1+1=2                K: 1+1=2

H: 2+2=4             H: 3+1=4

O: 1+1=2                O: 1+1=2

Therefore it is balanced. Hope this helps

6 0
3 years ago
A chemist wants to extract copper metal from copper chloride solution. The chemist places 0.25 grams of aluminum foil in a solut
netineya [11]

Answer: About 0.20 grams of copper (II) is formed, and some aluminum is left in the reaction mixture

7 0
3 years ago
A liquid is boiled in a beaker until all of the liquid has evaporated. a powdery substance remains in the beaker. which does thi
Maslowich
The original liquid, was not a pure substance
4 0
3 years ago
Read 2 more answers
Can someone help me with 10 and 11 plz. I will mark them Brainliest
hjlf

Answer:

10. Because they  want to, and what they do is none of your buisness.

11. Firefighter-chemicals in fire-stopping have science.

Pharmacist-dealing with drugs and science was used to make them.

Chef-science involved in making food.-

Explanation:

Bruhh these were so easy do it yourself next time, it took me less than a minutte to do.

5 0
3 years ago
A 2.0 mL sample of a liquid has a mass of 44.0 g. What is the density of the liquid?
riadik2000 [5.3K]

Answer:

The answer is

<h2>22 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of liquid = 44 g

volume = 2 mL

The density of the liquid is

density =  \frac{44}{2}

We have the final answer as

<h3>22 g/mL</h3>

Hope this helps you

8 0
3 years ago
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