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Avogadros number relates the mass of a mole to the mass of a single unit. The number of molecules in a mole of a substance, approximately 6.0225 × 1023.
Use PV=nRT, where P=STP pressure of 1 ATM, V= volume, n=# of moles (1 here), R=ideal gas constant (0.082057 L*ATM/mol*K) which is always the same, and T =temp in Kelvins at STP= 273.15K
Solve for V:
V=nRT/P ; now just plug all the STP values in:
V = (1 mol)(0.082057 L*ATM/mol*K)(273.15K)/1 ATM = 22.41 L
6.0225 × 1023 / 22.41 L = 2.6874 × 1022 molecules of hydrogen in a liter at STP
What else can I help you with?
How many H-atoms are present in 5 molecules of propane?
Five molecules of propane have 40 hydrogen atoms.
How many dozen atoms of hydrogen are present in a dozen molecules of h20?
In a dozen molecules of H2O, there are 24 atoms of hydrogen because each H2O molecule contains two hydrogen atoms.
How many molecules are present in 3 h20?
H2O consists of two Hydrogen and one Oxygen. Three sets of these would mean 9 atoms in your three molecules of water.
How many molecules in 12 gram of ice?
The number of molecules is 4,015.10e23.
A sample of water contains 3.6 moles of hydrogen atoms How many molecules of water are present in this sample?
Each water molecule contains two hydrogen atoms. Therefore, the number of water molecules present in the sample can be calculated by dividing the number of hydrogen atoms by 2. In this case, 3.6 moles of hydrogen atoms corresponds to 1.8 moles of water molecules. This is equal to approximately 1.08 x 10^24 water molecules.
How many molecules are present in a molecule of hydrogen?
there are 2 atoms of hydrogen in water
How many H-atoms are present in 5 molecules of propane?
Five molecules of propane have 40 hydrogen atoms.
How many atom are present in this formula 5H2?
Five molecules of hydrogen have 10 atoms.
How many dozen atoms of hydrogen are present in a dozen molecules of h20?
In a dozen molecules of H2O, there are 24 atoms of hydrogen because each H2O molecule contains two hydrogen atoms.
What is the total number of atom present in hydrogen chloride?
It depends on how many molecules of HCl you have. In one molecule of HCl there are 2 atoms present.
How many molecules are present in 3 h20?
H2O consists of two Hydrogen and one Oxygen. Three sets of these would mean 9 atoms in your three molecules of water.
How many numbers of atom are present in one gram of oxygen?
how many numbers of atom are present in one gram of oxygen
How many molecules in 12 gram in ice?
The number of molecules is 4,015.10e23.
How many molecules in 12 gram of ice?
The number of molecules is 4,015.10e23.
How many gram of molecule present in G of H2SO4.?
One gram-molecular weight of any substance contains Avogadro's number of molecules. For H2SO4, the gram-molecular weight is 98 g (2 for H, 32 for S, and 4 for O), so 1 gram of H2SO4 contains 1/98 moles of H2SO4 molecules, which is approximately 6.02 x 10^23 molecules.
How many points in half a gram of ice?
In half a gram of ice, there are approximately 1.25 x 10^22 molecules of water (H2O). Each water molecule consists of 3 atoms (2 hydrogen, 1 oxygen). Therefore, in half a gram of ice, there are approximately 3.75 x 10^22 atoms.
How many hydrogen are present in each water molecule?
Water molecules are H2O so there are 2 Hydrogens bonded to 1 oxygen.
