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Dimas [21]
1 year ago
6

Which of the following is

Chemistry
1 answer:
krek1111 [17]1 year ago
7 0

Cleaning polluted waters is difficult and expensive.

What is water pollution?

Water contamination occurs when pollutants contaminate water source and render the water unfit for use in drinking, cooking, cleaning, swimming, and other activities. Germs, dust,and parasites are examples of pollutants.

Why is cleaning polluted water difficult?

Reversing the impacts of water contamination is exceedingly challenging. Even with costly technology, it can take years to completely purify the water because natural processes can take years, decades, or even centuries. Even though water is polluted, there are some ways to reduce pollution. They are

  • Dispose of dangerous household goods properly
  • Reduce or stop using chemical pesticides, herbicides, and fertilizers
  • Set up a time to get your septic system serviced.
  • Use native plants in your landscaping.
  • Fix any barren areas in your yard.
  • Creating a rain garden

Hence, option A is correct.

To know more about water pollution, visit:

brainly.com/question/19920929

#SPJ1

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A 13.00 g sample of citric acid reacts with an excess of baking soda as shown in the equation.
Shtirlitz [24]
The gram-formula mass of citric acid is 3(1)+6(12)+5(1)+16(7)=192 g/mol.

This means that in 13.00 grams of citric acid, there are 13.00/192 = 0.067 moles.

From the equation, we know that for every 1 mole of citric acid that is consumed, 3 moles of carbon dioxide are produced.

This means that there are 3(0.067)=0.203 moles.

Since the gram-formula mass of carbon dioxide is 12+2(16)=44 g/mol, meaning it has a mass of 0.203(44)=8.93 g
7 0
2 years ago
Please someone answer this for me ASAP
Alex777 [14]

Answer:

I'm not 100% sure but I think it is b I'm not great with math tho

6 0
3 years ago
The closest star to our Sun is Proxima
vichka [17]

Answer:

Distance in kilometre = 4.242 x 10¹² km

Explanation:

Given:

Distance of Proxima  Centauri = 4.242 light years

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1 light year = 10,000,000,000,000 km

So,

4.242 light years = 4.242 x 10,000,000,000,000

Distance in kilometre = 4.242 x 10¹² km

6 0
3 years ago
What is mass in g of 15.5 moles of calcium?
padilas [110]

Answer:

621.2090000000001 grams

Explanation:

1 moles Calcium to grams = 40.078 grams

15.5*40.078 = 621.2090000000001 g

4 0
3 years ago
Why doesn't the air pressure crush this tiny<br> flower?
Romashka-Z-Leto [24]

Answer:

because air pressure crushes masses and or grams that have a stronger gravitaional  

pull

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