2 years ago

What is Oxygen an

Chemistry

1 answer:

GalinKa [24]2 years ago

4 0

The answer is #2// gas

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makkiz [27]

Hey buddy I am here to help!

1. C

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3 years ago

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Rus_ich [418]

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Which of the following are the requirements when creating a hypothesis for an experiment? Check ALL that apply. A: A hypothesis

kkurt [141]

Answer:

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Explanation:

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What is the mass of a bacterial cell?

SVEN [57.7K]

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How many molecules of ethane are present in 64.28 liters of ethane gas (C2H6) at STP

Rom4ik [11]

Answer : The molecule of ethane present in 64.28 L of ethane gas at STP is, $17.277\times 10^{23}$ molecule.

Solution :

At STP,

22.4 L volume of ethane present in 1 mole of ethane gas

64.28 L volume of ethane present in $\frac{64.28L}{22.4L}\times 1mole=2.869moles$ of ethane gas

And, as we know that

1 mole of ethane molecule contains $6.022\times 10^{23}$ molecules of ethane

2.869 moles of ethane molecule contains $2.869\times 6.022\times 10^{23}=17.277\times 10^{23}$ molecules of ethane

Therefore, the molecule of ethane present in 64.28 L of ethane gas at STP is, $17.277\times 10^{23}$ molecule.

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