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AnnZ [28]
3 years ago
15

Why is carbon dioxide important to life on Earth?

Chemistry
2 answers:
mestny [16]3 years ago
6 0
I would choose B. Because plants take in carbon dioxide and produce oxygen.
Ber [7]3 years ago
5 0

Answer:

Because that’s what plants use to breath

And plants produce oxygen btw

Explanation:

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How many grams of methane gas (CH4) need to be combusted to produce 12.5 L water vapor at 301 K and 1.1 atm? Show all of the wor
tangare [24]
Answer is: 4.45 grams of methane gas <span>need to be combusted</span>.
Balanced chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O.
Ideal gas law: p·V = n·R·T.<span>
p = 1.1 atm.
T = 301 K.
V(H</span>₂O) <span>= 12.5 L.
R = 0,08206 L·atm/mol·K.
</span>n(H₂O) = <span>1.1 atm · 12.5 L ÷ 0,08206 L·atm/mol·K · 301 K.
</span>n(H₂O) = 0.556 mol.
From chemical reaction: n(H₂O) : n(CH₄) = 2 : 1.
n(CH₄) = 0.556 mol ÷ 2 = 0.278 mol.
m(CH₄) = 0.278 mol · 16 g/mol.
m(CH₄) = 4.448 g.
4 0
3 years ago
Which of the following is the best example of heat transfer by convection
Ugo [173]
B seems like the correct answer stay safe!
6 0
3 years ago
Which of these statements best describes physical properties?
balu736 [363]

The correct answer would be D: Physical properties can be observed without changing the identity of a substance

5 0
1 year ago
What atom has the larger atomic radius Ca or Ni ?
Harrizon [31]

your answer is CA

says quizlet have and its right thanks

5 0
3 years ago
4) A granola bar has a mass of 42.9 g and the granola bar contains 26.20% honey
nata0808 [166]

<u>Answer:</u>

The percentage of honey in one granola bar is 26.02 percent.  

<u>Explanation:</u>

The weight of 1 granola bar is 42.9 grams. The grams of honey that is present in one granola bar is equal to 26.02 percent of 42.9 = 11.16 g

Now the amount of honey in the factory is given as 189.5g the weight of total granola bars would be

                                     = 42.9/11.16 x 189.5= 728.25

So no. of granula bars =728.25/42.9 =16.9 that can be Approximated to nearly 17

Now if one box has 6 bars then 17 bars will have to fit inside three boxes  

7 0
3 years ago
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