Agas cylinder contains exactly 15 moles of oxygen gas (o2). how many molecules of oxygen are in the cylinder? 4.01 × 1022 molecules 6.02 × 1023 molecules 9.03 × 1024 molecules 2.89 × 1026 molecules

A gas cylinder containing 15 moles of oxygen gas has molecules of oxygen in the cylinder.

The Avogadro number is used for calculating the number of molecules in 1 mole of an object.

Thus, 1 mole of gas = molecules.

So, if 1 mole of oxygen in a gas cylinder contain   molecules of oxygen.

The molecules of oxygen in 15 moles of the oxygen cylinder are:

1 mole = molecules

15 moles = molecules

15 moles = molecules

15 moles = molecules.

Thus, a gas cylinder containing 15 moles of oxygen gas has molecules of oxygen in the cylinder.

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1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

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