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Mashcka [7]
2 years ago
5

What material do we get from trees that is burnt as a fuel and releases carbon dioxide into the

Chemistry
1 answer:
HACTEHA [7]2 years ago
3 0

Answer:

not quite sure what you meant by the question but I think the answer you're looking for is biomass? not sure though

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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 not a correct chemical equation for a double displacement reaction?
sergeinik [125]
Where are the options?
6 0
3 years ago
Which is true about the potential energy of the reactants in this reaction pathway
MaRussiya [10]

it is equal to the potential energy of the products

7 0
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How many molecules are in 237g (about a cup of water)​
ololo11 [35]

Answer:

8.36 x 10 to the 24 power molecules of water in a cup of water

Explanation:

7 0
3 years ago
If density usually increases with decreasing temperature, why does ice float on liquid water? Explain.
zepelin [54]

Answer:

If you continue to cool water past 4 degrees Celsius, its density starts to plummet (you can see this in the graph). At zero degrees, i.e., the temperature at which water turns into ice, the density of water is actually quite low. It turns out that ice has a lower density than water, and any object that has a lower density than the liquid form on which it’s kept (in this case, water) will be able to float!

Explanation:

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