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8.086g
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How many moles of hydrogen gas contained in 9.03x1023?
Given/Known:1mole of H2 = 2.01588g H21mole of H2 = 6.022 x 1023 molecules H21) Convert molecules of H2 to moles of H2 by doing the following calculation.9.4 x 1025 molecules H2 x (1mol H2/6.022 x 1023 molecules H2) = 156mol H22) Convert the moles of H2 to mass in grams of H2.156mol H2 x (2.01588g H2/1mol H2) = 314g H2
Hydrogen gas H2 is a promising alternative to fossil fuels How many molecules are present in 1.0 kg of hydrogen gas?
To determine the number of molecules in 1.0 kg of hydrogen gas, we need to convert the mass to moles using the molar mass of hydrogen. The molar mass of hydrogen (H2) is 2.02 g/mol. Then we can use Avogadro's number (6.022 x 10^23) to find the number of molecules in one mole of hydrogen gas.
How many moles of molecules are there in 40.5 g of H2?
To determine the number of moles in 40.5 g of H2, first find the molar mass of H2, which is 2 grams per mole. Next, divide the given mass by the molar mass to find the number of moles. In this case, 40.5 g / 2 g/mol = 20.25 moles of H2.
Where H2 means a molecule of hydrogen and contains 2 atoms then number of moles is?
The molar mass of hydrogen is 2.
How many moles of H are there in 2.1 moles of H3PO4?
We have 2.1 moles of H3PO4 However , there are three hydrogen atoms. So this makes for 3 x 2.1 = 6.3 moles of hydrogen atoms. Further, hydrogen exists as the diatomic molecule 'H2'. So a 'free' hydrogen molecules of H2 we have 6.3 / 2 = 3.15 moles(H2)
How many hydrogen molecules are in 31.8 L H2(g) at STP?
To find the number of hydrogen molecules, first calculate the number of moles in 31.8 L of H2 at STP using the ideal gas law. Then use Avogadro's number (6.022 x 10^23 molecules/mol) to convert moles to molecules.
calculate the number of moles in H2 molecules in 4g H2?
2 moles.
How many molecules of hydrogen are produced if 13.05 g of Zn reacts with excess hydrochloric acid?
To determine the number of hydrogen molecules produced, you first need to find the moles of zinc reacting. Then, using the balanced chemical equation, you can determine the moles of hydrogen produced. Finally, convert moles of hydrogen to molecules using Avogadro's number (6.022 x 10^23 molecules/mol).
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.
How many molecules (not moles) of NH3 are produced from 5.95104 g of H2?
To find the number of molecules produced, first calculate the number of moles of H2 using its molar mass. Then, use the balanced chemical equation to relate the number of moles of H2 to NH3. Finally, convert the moles of NH3 to molecules using Avogadro's number, which is 6.022 x 10^23 molecules/mol.
What 2H2 means in chemical equation?
H2 is a hydrogen molecule made of two hydrogen atoms bonded together. The preceding two refers to the number of moles of H2 molecules in the chemical equation.
What is the mass of water when 4gm hydrogen and 64gm oxygen combined together nd how?
Balanced equation first.2H2 + O2 --> 2H2OGet moles products.4 grams H2 (1 mole H2/2.016 grams) = 1.984 moles H264 grams O2 (1 mole O2/32 grams) = 2.000 moles O2I suspect hydrogen gas of limiting and driving the reaction.1.984 moles H2 (1 mole O2/2 moles H2) = 0.992 moles O2 ( you have more than this in equation )2.000 moles O2 (2 mole H2/1 mole O2) = 4.000 moles H2 ( you do not have this much and H2 will drive this reaction )1.984 moles H2 (2 moles H2O/2 moles H2)(18.016 grams/1 mole H2O)= 36 grams water produced====================
