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3 years ago

What form of pollution can lichens be a good indicator of?

Chemistry

1 answer:

Natasha2012 [34]3 years ago

7 0

Answer:

Lichens can be used as air pollution indicators, especially of the concentration of sulphur dioxide in the atmosphere. Lichens are organisms that grow in exposed places such as rocks or tree bark. They need to be very efficient at absorbing water and nutrients to grow there.

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What has research determined about the orbit of an electron around a nucleus

polet [3.4K]

Hello,

Here is your answer:

The proper answer to this question is that "e<span>ach sub-level electron type has a unique path where it will likely to be found".

If you need anymore help feel free to ask me!

Hope this helps!</span>

4 0

3 years ago

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Which atmosphere layer is represented by F what are its characteristics

inysia [295]

That wouod be the ionosphere!

6 0

3 years ago

What is the mass number of oxygen atom with 7 neutrons?

kirill [66]

Oxygen has 8 protons
8 + 7 = 15
This isoptope is O-15

7 0

3 years ago

1. A 67 kg water-skier is being pulled by a speedboat. The force causes her to accelerate at 3.8

Alborosie

Answer:

254.6N

Explanation:

F=ma

F=67×3.8

F=254.6N

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3 years ago

How many grams of Co2 are produced from 12 g of CH4 and 133 g of O2

Andru [333]

Answer:

$m_{CO_2}=33gCO_2$

Explanation:

Hello,

In this case the undergoing chemical reaction is:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Next we identify the limiting reactant with the given amounts of methane and oxygen by computing the available moles of methane and the moles of methane consumed by the 133 g of oxygen:

$n_{CH_4}^{available}=12g*\frac{1mol}{16g} =0.75molCH_4\\n_{CH_4}^{consumed\ by\ O_2}=133gO_2*\frac{1molO_2}{32gO_2}*\frac{1molCH_4}{2molO_2}=2.08molCH_4$

In such a way, the limiting reactant is methane with 0.75 moles which produce the following mass of carbon dioxide:

$m_{CO_2}=0.75molCH_4*\frac{1molCO_2}{1molCH_4} *\frac{44gCO_2}{1molCO_2} \\\\m_{CO_2}=33gCO_2$

Best regards.

7 0

3 years ago

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