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Using stoichiometry, 16.2 L of H2 gas at STP equals about .7228 moles (1 L of gas at STP has a volume of 22.41 L), and there are 6.02 x 1023molecules of hydrogen in a mole, so we have (6.02 x 1023molecules/mol)(.7228 mol) = 4.35 x 1023 hydrogen molecules. There are two hydrogen atoms in each molecule, so the answer is (4.35 x 1023molecules H2)(2 H atoms/molecule) = 8.70 x 1023 H atoms in 16.2 L.
What else can I help you with?
How many moles of of hydrogen gas occupy 112L at stp?
Ideal gas equation. PV = nRT ===============
A sample of 90 g water was decomposed using electrolysis How many liters of hydrogen where produced at STP?
The molar mass of water is 18 g/mol. Since there are 2 hydrogen atoms in each water molecule, the molar mass of hydrogen is 2 g/mol. Therefore, 90 g of water contains 5 moles of water, which means 10 moles of hydrogen were produced. At STP, 1 mole of any gas occupies 22.4 liters, so 10 moles of hydrogen would occupy 224 liters.
What is water at stp?
Water at STP (standard temperature and pressure) exists as a liquid with a density of 1 g/cm³, a boiling point of 100°C, and a freezing point of 0°C. It has a molar mass of 18.015 g/mol and is composed of hydrogen and oxygen atoms in a 2:1 ratio.
What would be the volume of 6.00 g of helium gas at STP?
If these atoms are loose unities, not bonded in a molecule, it would be about 22 dm3 at 0oC and standard pressure (STP). If the atoms would have formed gas molecules, e.g. CO2 or SF6, the answer would be different, because 6.02 x 1023 molecules always take in a volume of about 22 dm3 at STP. But with CO2 you would have then 18 x 1023 atoms because there are 3 atoms in one molecule.
Which pair of gas has same rate of diffusion at STP?
Hydrogen and helium have the same rate of diffusion at standard temperature and pressure (STP) due to their similar molecular weights and sizes.
How many atoms of hydrogen are in 67.2 l of h2 at stp?
At STP (Standard Temperature and Pressure), the volume of 1 mole of any gas is 22.4 liters. Since hydrogen gas exists as H2 molecules, 67.2 liters of hydrogen gas at STP contains 3 moles of H2 molecules. Since each H2 molecule contains 2 hydrogen atoms, there are 6 moles of hydrogen atoms, which is equivalent to 6 x 6.022 x 10^23 atoms of hydrogen.
Does water come from atoms?
Like all material things that exist, water is made from atoms. Water is made specifically from hydrogen and oxygen atoms, elements that are in the form of gas when at stp and not combined.
At STP which element is a solid hydrogen or iodine?
At standard temperature and pressure (STP), iodine is a solid while hydrogen is a gas.
What do you know about all the atoms in the element oxygen?
2 atoms of oxygen joined togetherBy mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At STP, two atoms of the element bind to form dioxygen.
What do you know about all of atoms in the elements oxygen?
2 atoms of oxygen joined togetherBy mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At STP, two atoms of the element bind to form dioxygen.
What is the phase of hydrogen chloride?
Gaseous at STP
What is molar volume of hydrogen at stp?
The molar volume of hydrogen gas at STP (Standard Temperature and Pressure) is 22.4 liters per mole.
How many moles of of hydrogen gas occupy 112L at stp?
Ideal gas equation. PV = nRT ===============
A sample of 90 g water was decomposed using electrolysis How many liters of hydrogen where produced at STP?
The molar mass of water is 18 g/mol. Since there are 2 hydrogen atoms in each water molecule, the molar mass of hydrogen is 2 g/mol. Therefore, 90 g of water contains 5 moles of water, which means 10 moles of hydrogen were produced. At STP, 1 mole of any gas occupies 22.4 liters, so 10 moles of hydrogen would occupy 224 liters.
The volume of 1mole of hydrogen bromide at STP is 22.4 liters The gram-formula mass of hydrogen bromide is 80.9 grams per mole What is the density of hydrogen bromide at STP?
The molar volume of a gas at STP is 22.4 liters/mol. The molar mass of hydrogen bromide is 80.9 g/mol. Therefore, the density of hydrogen bromide at STP is 80.9 g/mol / 22.4 L/mol = 3.61 g/L.
Which 2 elements are gases at STP?
hydrogen, nitrogen, oxygen, fluorine, and chlorine are all gases at STP
How many xenon atoms are in 10.0 L of Xe gas at STP?
At STP (standard temperature and pressure), 1 mole of gas occupies 22.4 L. Xenon's molar mass is approximately 131.29 g/mol. Using this, we find that 10.0 L of Xe gas at STP would contain approximately 0.446 moles of Xe atoms, which is about 2.69 x 10^23 xenon atoms.
