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Lena [83]
3 years ago
5

Given the balanced equation representing a reaction occurring at 101.3 kilopascals and 298 k. 2h2(g) + o2(g) → 2h2o(l) + energy

what is the net amount of energy released when one mole of h2o(l) is produced?
Chemistry
1 answer:
DaniilM [7]3 years ago
8 0
I believe the answer will be 285.8 kJ
The reaction above is for two moles of water; therefore we divide the amount of energy by half. 
The enthalpy of formation of a substance is the energy absorbed or released when one mole of a substance is formed from its constituents elements. For example the enthalpy of formation of water is 285.8 kJ/mol
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what are the slope and the y-intercept of the linear function that is represented by the equation y=-10X+1 ?
Vladimir79 [104]

The slope is 10

And the y-intercept is 1

Hope it helps

6 0
3 years ago
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How many moles of N2O5 are needed<br> to produce 7.90 g of NO2?
Roman55 [17]

Answer:

0.085 moles of  N₂O₅ are needed

Explanation:

Given data:

Mass of NO₂ produces = 7.90 g

Moles of N₂O₅ needed = ?

Solution:

2N₂O₅       →     4NO₂  + O₂

Number of moles of NO₂ produced :

Number of moles = mass/ molar mass

Number of moles = 7.90 g/ 46 g/mol

Number of moles = 0.17 mol

now we will compare the moles of NO₂   with N₂O₅.

                NO₂          :       N₂O₅

                  4            :          2

                0.17          :         2/4×0.17 = 0.085 mol

Thus, 0.085 moles of  N₂O₅ are needed.

4 0
3 years ago
Why does surface area of a reactant influence the rate of the reaction?
telo118 [61]

because it can influence how frequently and sufficiently the particles collide depending on the space it has to do so, for example a large surface area would be have a slower rate of reaction and a lower temperature. (the rate of reaction in terms of concentration, it is diffused from high to low) 
7 0
3 years ago
A container of N, 03(9) has a pressure of 0.490 atm. When the absolute temperature of the N, O2(g) is tripled, the gas
spayn [35]

Answer: 1.59atm

Explanation:

We have that for the Question "Calculate the final pressure of the gas mixture, assuming that the container volume does not change."

it can be said that

The final pressure of the gas mixture, assuming that the container volume does not change =

From the question we are told

A container of N2O3(g) has a pressure of 0.265 atm. When the absolute temperature of the N2O3(g) is tripled, the gas completely decomposes, producing NO2(g) and NO(g).

3 0
2 years ago
What other simple sugars have the same chemical formula as glucose?
Usimov [2.4K]

Answer:

The answer to your question is:

Explanation:

Other sugars with the same chemical formula as Glucose:

Sugar            Formula            Description

Glucose         C₆H₁₂O₆            It's the most abundant monosaccharide.

Mannose       C₆H₁₂O₆            It's found in plants and some animals.

Fructose        C₆H₁₂O₆            It's the sugar of fruits.

Galactose      C₆H₁₂O₆            It's found in milk.

8 0
3 years ago
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