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EastWind [94]
3 years ago
5

Is paper catching on fire a physical or chemical change?

Chemistry
2 answers:
igomit [66]3 years ago
3 0

hello there

the answer is chemical change

the paper if self is phyical but since it went through a process of carbon dioxide and other components its now hat is called a chemical change

thank you

best regards Queen Z

liq [111]3 years ago
3 0

The correct answer is chemical change. It can’t return back to its original state.

Remember with a physical change, it can turn back to its original form, but with chemical change, it can’t.

Hope this helps

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Should carbon dioxide be considered to be a pullutant
Kipish [7]

Answer:

yes, as it helps to increase global warming and it's main cause is deforestation

Explanation:

as carbon dioxide is a greenhouse gas. It helps to increase global warming

7 0
3 years ago
Please help me im going out of my way and giving you extra points I really need some assistance
Hitman42 [59]

Answer:

x=2.8moles

Explanation:

first step balance the chemical equation

C2H6+O2-->CO2+2H2O

use more ratio to find the moles of water

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cross multiply

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4 0
3 years ago
Please I'm not really sure.
vitfil [10]

Answer:

a pea!

Explanation:

5 0
2 years ago
Read 2 more answers
Lakesha gave three tenths of her cookies to Bailey and five tenths of her cookies to Helen. What fraction of her cookies did Lak
Mashutka [201]

Answer:

a . eight tenths of her cookies

Explanation:

Let the total number of Lakesha's cookies be represented by x.

So that;

She gave three tenths to Bailey = \frac{3}{10} of x

                                                     = \frac{3x}{10}

She gave five tenths to Helen = \frac{5}{10} of x

                                                  = \frac{5x}{10}

Fraction of Lakesha's cookies given away = \frac{3x}{10} + \frac{5x}{10}

                                                      = \frac{3x+ 5x}{10}

                                                      = \frac{8x}{10}

Thus, the fraction of cookies given away by Lakesha is \frac{8}{10}.

6 0
2 years ago
Explain why you hear a “whoosh” sound when you open a can containing a carbonated drink. Which gas law applies?
Lana71 [14]

Carbonated drinks have the air under pressure so that carbon bubbles are forced into the drink, keeping it carbonated. So when you open a can, the air under pressure in the can comes out of the can at a high speed, making a "whooshing" sound. The gas law that applies to this concept is the Boyle's Law (PV=k or P1V1=P2V2).

6 0
3 years ago
Read 2 more answers
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