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lianna [129]
3 years ago
9

In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

Chemistry
1 answer:
Marina CMI [18]3 years ago
6 0

Explanation:

in the presence of excess oxygen methane burns to prduce carbon (iv) oxide and water ....this is called complete combustion...

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PLEASEEE HELPPP I SUCK AT CHEM :(
Luda [366]

Answer:

a) H2SO4 + 2KOH -> 2H2O + K2SO4

b) 9.809 ml

Explanation:

Number of Moles = Mass/ Molar Mass

Therefore: Mass = Number of moles * Molar Mass

--------------------------------------------

Molar mass of H2SO4:

H2= 2.02

S= 32.07

O4= 64

--------------------------------------------

H2SO4 has the molar mass of 98.09

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the Moles of H2SO4 is given to be 0.100M

Therefore:

Mass= 98.09*0.1

          = 9.809g

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Assuming that 1 g= 1 ml, the volume of sulfuric acid is 9.809 ml.

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3 years ago
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Answer:

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If energy was added to solid, what state would it change to
12345 [234]

Answer:

Explanation:

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7 0
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When 0.49 g of a molecular compound was dissolved in 20.00 g of cyclohexane, the freezing point of the solution was lowered by 3
IRISSAK [1]

Answer: The molecular mass of this compound is 131 g/mol

Explanation:

Depression in freezing point:

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where,

\Delta T_f = depression in freezing point  = 3.9^oC

k_f = freezing point constant  = 20.8^0C/m

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i = Van't Hoff factor = 1 (for non-electrolyte)

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Now put all the given values in the above formula, we get:

(3.9)^oC=1\times (20.8^oC/m)\times \frac{(0.49g)\times 1000}{M_2\times (20.00g)}

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3 years ago
What tool does the US government use to keep track of inflation throughout the years?
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The answer is d the inflation scale
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