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
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
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The number of molecules is 0,134.10e23.
the principle that equal volumes of all gases and vapors, under the same conditions of temperature and pressure, contain identical number of molecules.
3.00 moles x 6.02x10^23 molecules/mole = 1.81x10^24 molecules
You would multiply the number of grams x Avogadro's number=number of molecules: (21.6g) X (6.022x10^23)= 1.301x10^25 molecules
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.
The number of molecules is 4,98.10e16.
The same number of molecules implies the same number of moles.
It contains 6.023 x 1023 molecules of water. the number is called Avogadro's Number and it is valid under STP conditions
molecules
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.
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.
the principle that equal volumes of all gases and vapors, under the same conditions of temperature and pressure, contain identical number of molecules.
The number of moles of helium is 0,32.
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.
A molecules
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
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.
3.00 moles x 6.02x10^23 molecules/mole = 1.81x10^24 molecules