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Sergio039 [100]
2 years ago
10

Which of the following is the main disadvantage to using fossil fuels?

Chemistry
2 answers:
steposvetlana [31]2 years ago
7 0
The answer is A)pollution
g100num [7]2 years ago
4 0

Answer: A. Pollution

Explanation:

Fossil fuels are the fuels which are excavated from undersurface and deep regions of the the earth crust. These are produce by millions of years of decomposition activity of soil microbes on organic matter generated after dead and decaying plants and animals. These fossil fuels are used as a source of energy.

The fossil fuels like coal, petroleum and natural gas produces toxic,harmful and polluting gases like carbon dioxide, carbon monoxide, nitrous oxides on combustion and burning. These gases contaminate the air and water hence causes pollution.

Therefore, the main advantage of using fossil fuel is pollution.

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There is 35 mg of sodium in a can of Coke. You determine it to be 28 mg. What is your percent error?
natali 33 [55]

Answer:

The answer is

<h2>20 %</h2>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual volume = 35 mg

error = 35 - 28 = 7

The percentage error is

P(\%) =  \frac{7}{35}  \times 100 \\  =  \frac{1}{5}  \times 100 \\  =  20

We have the final answer as

<h3>20 %</h3>

Hope this helps you

8 0
2 years ago
Read 2 more answers
A sample has a pH of -0.248 (yes, it really is possible to have a negative pH). Find
dalvyx [7]

Answer:

pOH= 14.248

[H+]=1.77 M

[OH-]=5.65 x10^-15M

Explanation:

pH+pOH= 14

pOH= 14-pH

pOH=14-(-0.248)

pOH= 14.248

[H+]=10^-pH= 10^-(-0.248)=1.77 M

[OH-]=10^-pOH= 10^-14.248=5.65 x10^-15M

5 0
3 years ago
What is an example of turning chemical energy into light energy?
levacccp [35]
Chemical energy being changed into light energy would happen during phototsynthesis

5 0
3 years ago
if a leaf falls from a tree we assume that it is in free fall and not affected by air resistance, how many force vectors does th
lakkis [162]
Just the force of gravity down. 
7 0
3 years ago
Consider the following reaction:
Sidana [21]
Your limiting is CuCI2 and the excess is KI (from what i’ve heard from my tc to find it just use the moles or look at the grams)Do you want me to do the qn and give u the ans or?

Explanation:You have more grams of KI than CuCI2
irl example : I need 200g of flour to bake 1 muffin and 100g of butter.But I have 300g of butter and only 200g of flour.This means I can only bake up to 1 muffin since I got excess grams of butter.But to use up all my 300g of butter I need 400g more of flour.Making my butter the excess while my flour the limiting since I have less of it and it also determines how much muffin would I get at the end of the bake.

im sorry if that example sounds clowny T-T
6 0
2 years ago
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