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## What is the molar volume of 3 moles of He at STP?

Answer. Answer: Explanation: Well, assuming that the hydrogen gas is contained at STP , then the molar volume would be 22.7⋅3=**68.1 L** .

## What is volume of oxygen at STP?

Finally, use the fact that one mole of oxygen would occupy a volume of 22.4 L at STP to figure out the volume of the oxygen in this question at STP. The answer is **0.338 L (338 mL)**, but you will have to show the calculations to receive credit on your lab report.

## What is the volume in Litres at STP of 3 moles of hydrogen sulphide gas?

The volume is **68.1 L** at STP .

## How do you find the volume of moles?

At standard Temperature and Pressure (STP) the molar volume (V_{m}) is the volume occupied by one mole of a chemical element or a chemical compound. It can be calculated by **dividing the molar mass (M) by mass density (ρ)**. Molar gas volume is one mole of any gas at a specific temperature and pressure has a fixed volume.

## What is the mole formula?

Avogadro’s number is a very important relationship to remember: **1 mole = 6.022×1023 6.022 × 10 23 atoms**, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro’s number. To convert from atoms to moles, divide the atom amount by Avogadro’s number (or multiply by its reciprocal).

## What is the volume of oxygen?

Oxygen – Weight and Volume Equivalents

Weight of Liquid or Gas | Volume of Gas at 70°F (21°C) and 1 atm | |
---|---|---|

lb | kg | m^{3} |

2.205 | 1.000 | 0.754 |

2.516 | 1.141 | 0.861 |

9.524 | 4.320 | 3.258 |

## What volume of oxygen is required for the complete combustion?

– Hence, we can conclude that **99.667 L** of oxygen at NTP is needed for complete combustion of 20 litres of propane measured at ${{27}^{o}}C$ and 760 mm of Hg pressure.

## How do you find the volume of oxygen gas?

Calculate the volume (in cubic meters) of gaseous oxygen using the ideal gas law: **multiply the amount of oxygen (in moles) by temperature and the molar gas constant followed by dividing the product by pressure**.

## What is the volume of oxygen occupied by 2 moles?

David G. Assuming that the gas is at standard temperature and pressure (STP), one mole of any gas occupies 22.4 L . This means the number of moles of O2 is 222.4=**0.089 mol** .

## What is the volume of 1.5 moles of oxygen gas at STP?

1.5 moles of oxygen at stp = 22.4 x 1.5 = **33.6 litres**.