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What are the masses of molecular oxygen O2 hydrogen H2 and nitrogen in grams?
The molar mass of O2 is 32 g/mol, H2 is 2 g/mol, and N2 is 28 g/mol. To calculate the mass in grams, you would multiply the molar mass by the number of moles of the substance. For example, for 1 mole of O2, the mass would be 32 grams.
How many liters of hydrogen gas are needed to react with CS2 to produce 2.50 L of CH4 at STP?
Since the reaction is balanced, we can use the stoichiometry to find the volume of hydrogen gas needed. According to the reaction equation: 1 mol of CS2 reacts with 4 mol of H2 to produce 1 mol of CH4. So, 2.50 L of CH4 will need 2.50 mol of H2. At STP, 1 mol of any gas occupies 22.4 L, thus 2.50 mol of H2 will be 56 L.
Mass of Hydrogen gas molecule?
The mass of a hydrogen gas molecule (H2) is approximately 2 atomic mass units (amu). This is because each hydrogen atom has a mass of roughly 1 amu, and a hydrogen gas molecule consists of two hydrogen atoms bonded together.
Why the number of atoms in one mole of hydrogen is double the number of atoms?
Because hydrogen occurs in nature as the diatomic molecule H2. So every molecule of H2 contains two hydrogen atoms. 1 mole of H2 has 6.022 x 1023 molecules of H2, while the number of atoms is twice that at 1.204 x 1024 atoms.
How many moles of NH3 can be produced by the reaction of 2.00 g of N2 with 3.00 g H2 Reaction N2(g) plus 3 H2(g) 2 NH3(g)?
To determine the limiting reactant, first convert the masses of N2 and H2 to moles. Then divide the amount of each reactant by its stoichiometric coefficient in the balanced equation to find moles of NH3 produced. The limiting reactant is the one that produces the least amount of NH3.
How many moles of NH3 are produced when 1.2 mol of H2 reacts?
The balanced chemical equation for the reaction between H2 and NH3 is: 3H2 + N2 → 2NH3 From the equation, we can see that 3 moles of H2 produce 2 moles of NH3. Therefore, when 1.2 moles of H2 react, we can calculate the moles of NH3 produced as: 1.2 mol H2 * (2 mol NH3 / 3 mol H2) = 0.8 mol NH3.
What is the molar mass of gas h2?
The molar mass of H2 = 2.0159 g/mol
Explain why there are 1.2 x 1024 atoms in 1 mol of H2 and yet there are only 6.02 x 1023 atoms in 1 mol of Mg?
1+1=2 therefore apple = apple and then you take grams per mol. end
How many grams of H2 are needed to react with 2.40 g of N2?
The balanced chemical equation for the reaction is N2 + 3H2 -> 2NH3. From the equation, we can see that 3 moles of H2 react with 1 mole of N2. 1 mole of N2 is approximately 28 g and 2.40 g of N2 is about 2.40/28 ≈ 0.086 mol. Therefore, 0.086 mol of N2 would require 0.086 mol * 3 mol = 0.258 mol of H2. The molar mass of H2 is approximately 2 g/mol, so 0.258 mol of H2 would be about 0.258 mol * 2 g/mol ≈ 0.516 g of H2.
What is the maximum number of moles H2 that can be produced by the reaction of 3.00 mol of Ni with 4.50 mol of HCl according to the equation Ni 2HCl NiCl2 H2?
The stoichiometry of the reaction shows that 1 mol of Ni reacts with 2 mol of HCl to produce 1 mol of H2. Therefore, the limiting reactant is HCl. With 4.50 mol of HCl, you would produce 4.50/2 = 2.25 mol of H2.
How many atoms of hydrogen are in 16.2 l of h2 at stp?
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 is the mass of 5 moles H2?
The molar mass of H2 is 2 g/mol. To find the mass of 5 moles of H2, you would multiply the molar mass by the number of moles: 2 g/mol * 5 mol = 10 grams.
What are the masses of molecular oxygen O2 hydrogen H2 and nitrogen in grams?
The molar mass of O2 is 32 g/mol, H2 is 2 g/mol, and N2 is 28 g/mol. To calculate the mass in grams, you would multiply the molar mass by the number of moles of the substance. For example, for 1 mole of O2, the mass would be 32 grams.
How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?
8 mol
How many atoms are in this formula H2 SO4?
7
What is the heat of formation for H2?
The heat of formation for H2 is 0 kJ/mol.
How many atoms in 1g H2?
1 gram H2 (1 mole H2/2.016 grams)(6.022 X 1023/1 mole H2) = 3 X 1023 atoms of hydrogen gas =========================
