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777dan777 [17]
3 years ago
5

PLEASE HELP MEI BEG YOU!!!!

Chemistry
2 answers:
Fittoniya [83]3 years ago
7 0
The second one is, "<span>Be careful to present only objective facts"</span>
erica [24]3 years ago
5 0
The answer to the first one is true because when there is fire at the station you want throw water at it 
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Humans become part of the carbon cycle when they
garik1379 [7]

Answer:

Human activities have a tremendous impact on the carbon cycle

Explanation:

Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels.

7 0
3 years ago
Propane (C₃H₈) burns in oxygen to produce carbon dioxide and water. What is the correct form of the chemical equation that descr
V125BC [204]

Answer:

The answer to your question is below

Explanation:

Propane is a hydrocarbon that has only single bonds in its structure so it is an alkane.

Propane formula = C₃H₈

Oxygen formula = O₂

Carbon dioxide formula = CO₂

Water formula = H₂O

<u>Reaction:</u>

                         C₃H₈  +   5O₂   ⇒    3CO₂   +   4H₂O

                  Reactants            Elements     Products

                          3                          C                    3

                          8                          H                    8

                         10                         O                   10

6 0
3 years ago
Which of the following gases is formed during photosynthesis? (1 point)
Karolina [17]

Answer:

carbon dioxide hope I helped please mark brainliest

7 0
3 years ago
A beach ball with a volume of 12.0 L and an initial temperature of 32.0 oC is cooled to -73.0 oC, what is its final volume?
Ierofanga [76]

Answer:

-57.12

Explanation:

i used a calculator :)

3 0
3 years ago
Read 2 more answers
5
belka [17]

Answer:B

Explanation:

The metals are to the left of the linethe nonmetals are to the right of the line, and the elements immediately adjacent to the line are the metalloids.

6 0
3 years ago
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