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11111nata11111 [884]
3 years ago
12

In the reaction 2H2+____O2----2H2O, what coefficient should be placed in front of O2 to balance the reaction? Please help

Chemistry
1 answer:
Natali5045456 [20]3 years ago
7 0

Answer:

D

Explanation:

2H2+______O2- - - - - 2H2O

I'd say no coefficient is needed cos it's already balanced

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4 0
2 years ago
Calculate the volume of one mole of a gas at 1.00 atm pressure and 0 °C.
N76 [4]

Answer:

Solution:-

The gas is in the standard temperature and pressure condition i.e. at S.T.P

Therefore,

V

i

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3

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=?

As given that the expansion is isothermal and reversible

∴ΔU=0

Now from first law of thermodynamics,

ΔU=q+w

∵ΔU=0

∴q=–w

Given that the heat is absorbed.

∴q=1000cal

⇒w=−q=−1000cal

Now,

Work done in a reversible isothermal expansion is given by-

w=−nRTln(

V

i

​

V

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​

​

)

Given:-

T=0℃=273K

n=1 mol

∴1000=−nRTln(

V

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​

V

f

​

​

)

⇒1000=−1×2.303×2×273×log(

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6 0
2 years ago
324.55 cm - (6104.5 cm²/22.3 cm)
Ganezh [65]

Answer: 50.806 cm is the correct answer.

Explanation: First divide 6104.5 cm^2 by 22.3 cm.

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*Note: When dividing units, subtract the exponents, and when multiplying units simply add the exponents.

Then continue by subtracting 324.55 cm - 273.74 cm.

This should give you an answer of 50.806 cm.

3 0
2 years ago
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statuscvo [17]

Answer:

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Explanation:

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4 0
3 years ago
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548.6ml how many cm cube
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3 years ago
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