2 years ago

Convert 72g of O2 to moles

2 answers:

5 0

Number of moles = Given mass/molar mass
Given mass : 72 gm
Molar mass of oxygen gas = 16×2 = 32 gm

Therefore, number of moles = 72/32 = 2.25

Volgvan2 years ago

4 0

Moles = mass / molar mass
molar mass of O2 is 32
therefore moles = 72/32
= 2.25 moles

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Which of the following elements is going to be the most reactive and why? Nitrogen or Oxygen?

bagirrra123 [75]

Answer:

electronegativity

Explanation:

Oxygen will be most reactive

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As oxygen need only two electrons to complete its octet.

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7 0

2 years ago

Consider the following reactions. (Note: (s) = solid, (l) = liquid, and (g) = gas.) ½H2(g) + ½I2(g) → HI(g), ΔH = +6.2 kcal/mole

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2 years ago

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Determine the percentage of carbon and hydrogen in ethane C2H6 if the molecular weight is 30.

Naddika [18.5K]

Answer:

Percentage of carbon:

${ \tt{ = \frac{24}{30} \times 100\%}} \\ = 80\%$