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fomenos
2 years ago
12

What does pollution mainly come from

Chemistry
1 answer:
Ipatiy [6.2K]2 years ago
4 0

Answer:

Pollution comes from factories, careless humans, chemicals, non-biodegradable trash.

Explanation:

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A rock has a density of 3.75g/cm3 and a mass of 26g. What is the volume of the rock?
Lemur [1.5K]

Answer:

<h3>The answer is 6.93 cm³</h3>

Explanation:

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

volume =  \frac{mass}{density}  \\

From the question we have

volume =  \frac{26}{3.75}  \\  = 6.93333333...

We have the final answer as

<h3>6.93 cm³</h3>

Hope this helps you

8 0
2 years ago
In which of these would a nonpolar covalent bond be present? HBr H2O HCI Br2
cluponka [151]
Br2 is the correct answer
5 0
3 years ago
Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
sp2606 [1]
B) 40%  
The balanced equation indicates that for every 3 moles of H2 used, 2 moles of NH3 will be produced. So the reaction if it had 100% yield would produce (2.00 / 3) * 2 = 1.333333333 moles of NH3. But only 0.54 moles were produced. So the percent yield is 0.54 / 1.3333 = 0.405 = 40.5%. This is a close enough match to option "b" to be considered correct.
3 0
3 years ago
Read 2 more answers
Which phrase describes a compound that consists of two elements
Katarina [22]
A substance that consist of two elements is one IN WHICH THE ELEMENTS ARE CHEMICALLY COMBINED IN A FIXED PROPORTION.
A compound is a substance that is made up of two or more elements which have undergone chemical reaction together and their individual properties have been lost during the reaction, thus a compound has properties that are different from those of its constituents elements. Compounds are usually combined in specific fixed ratio.<span />
7 0
3 years ago
Please need me know! Chem question
Inessa [10]
90 degrees
As temperature increases, rate of reaction increases :)
5 0
3 years ago
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