answersLogoWhite

0


Best Answer
  • In room condition the volume is 24dm3

So convert 500cm3 to dm3

1 dm3 equals 1000cm3

x dm3 equals 500cm3

500÷1000=0.5dm3

6.02×10^23 molecules of O2 equals 24 dm3

xmolecules equals 0.5dm3

0.5×6.02 ×10^23 ÷24= 1.25 ×10^22

User Avatar

Oluebube Uchenna

Lvl 2
1y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

11y ago

500cm3 = 0.5 dm3

at room condition one mole of any gas =24 dm3

avogado constant = 6.02 x 1023

0.5/ 24 x (6.02x 1023) =1.25x 1022 mol

##

This answer is:
User Avatar

User Avatar

Wiki User

8y ago

The number of molecules is 0,134.10e23.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are the number of molecules in 500cm3 of oxygen at standard conditions?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What volume of carbon dioxide contains the same number of molecules as 20ml of oxygen at the same conditions?

The same number of molecules implies the same number of moles.


The chemical formula for h20 contains how many water molecules?

It contains 6.023 x 1023 molecules of water. the number is called Avogadro's Number and it is valid under STP conditions


If equal amounts of diatomic gases are under the same conditions of temperature and pressure they have the same number of what?

molecules


What is the amount of molecules of gas in room temperature?

A cubic meter of gas at standard temperature and pressure will have approximately 2.6 x 1025 molecules. This is based on the Avogadro's Number of molecules, (approximately 6.022 x 1023) taking up a volume of around 23 liters. Alternatively, 32 grams of oxygen has Avogadro's number of molecules.


What is Avogadros law?

This law give the variation in volume of a gas with amount of the gas. It states that equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules.


What is Avogadros hypothesis?

the principle that equal volumes of all gases and vapors, under the same conditions of temperature and pressure, contain identical number of molecules.


How many moles of helium gas (he) are present in 7.2 liters of helium gas at standard conditions?

The number of moles of helium is 0,32.


What mass of oxygen contain the same number of molecules as 42g of nitrogen?

Both nitrogen and oxygen exist at standard temperature and pressure as diatomic molecules. Therefore, the relative masses of equal numbers of molecules of the substance will the same as the ratios of their atomic masses, which are 15.9994 for oxygen and 14.0067 for nitrogen. The mass of oxygen that contains the same number of molecules as 42 g of nitrogen is 42(15.9994/14.0067) or 48 g, to the justified number of significant digits.


What does the number of T nitrogen bases in DNA molecules equals the number of what?

A molecules


Can Sn reduce Zn with 2 plus oxidation number under standard- state conditions and why?

no, because if Sn is more likely to reduce and Zn+2 is more likely to oxidize , their combined energy would be negative volts , so no under standard state conditions it cannot


How many grams of chlorine gas are in 6.82 x 1024 molecules of chlorine gas?

Chlorine gas (at standard temperature and pressure) consists of diatomic molecules. Therefore, in the specified number of molecules of chlorine gas there are 1.364 X 1025 atoms. The gram atomic mass of chlorine, which by definition consists of Avogadro's Number of atoms, is 35.453. Therefore, the mass of the specified number of molecules of chlorine gas is 35.453 X [(1.364 X 1025)/(6.022 X 1023)] or 803 grams, to the justified number of significant digits.


What is the number of molecules in 3.00 moles of H2S?

3.00 moles x 6.02x10^23 molecules/mole = 1.81x10^24 molecules