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Relative Atomic Masses:
Fe = 55.84 F = 18.9
You have 3 F so, 18.9 * 3 = 56.7
56.7 + 55.84 = 112.54
This is our formula mass.
24 * (1 mol/112.54) = 0.2127 Mols. - Number of moles in FeF3
* by Avogadro Constant:
0.2127 * 6.02 x10^23 =
1.280 x10^23 molecules
:)
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoThe gram-molecular weight of Hydrogen is 1.00794 (let's call that 1) Hydrogen gas is H2 so its GMW is 2 That means a mole of hydrogen gas has the mass of 2 grams. If you have 24 grams then you have 12 moles. There is 6.02 x 1023 (NA) things in a mole.... 12 moles x 6.02 x 1023 molecules/mole = 7.22 x1024 molecules
Wiki User
∙ 7y agoEven without a calculator, it's pretty easy to see that the answer is going to be around 32. If you need more significant figures you're going to have to do the math yourself (the real answer will be marginally higher, since that's slightly over two moles and the molar mass of methane is very slightly over 16).
Wiki User
∙ 14y agoMolar mass of H2 =2g
No. of moles in 4g=4/2=2 moles
1 mole contains 6.022 x 1023 molecules.
Therefore, two moles contain 12.044 x 1023 molecules
Wiki User
∙ 11y agoO2 molecular weight = 32 --- so 24g/32g/m= 0.75 moles
Wiki User
∙ 6y agoThe number of moles in 24 g of oxygen gas (O2) is 0,75.
Wiki User
∙ 6y ago24 g of oxygen gas (O2) is equal to o.75 moles.
Anonymous
How many grams are there in 2.3 x 1024 atoms of Ag
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How many atoms are in oxygen gas?
Oxygen gas (O2) is diatomic, meaning it consists of two oxygen atoms chemically bonded together. Therefore, to determine the number of atoms in oxygen gas, we consider the molecular formula. In one molecule of oxygen gas (O2), there are two oxygen atoms. Avogadro's number (6.022 x 10^23) represents the number of entities (atoms, molecules, etc.) in one mole of a substance. Therefore, in one mole of oxygen gas, there are 2 moles of oxygen atoms, equivalent to approximately 1.204 x 10^24 oxygen atoms.
How many molecules in oxygen gas?
There are 1/6.022 x 1023 = 1.66 x 10-24 moles of oxygen in 1 molecule of O2.
What is the number of molecules in 3.00 moles of H2S?
3.00 moles x 6.02x10^23 molecules/mole = 1.81x10^24 molecules
How many atoms of oxygen are there in 220g of carbon dioxide?
Atomic mass of C = 14g/mol Atomis mass of O = 16g/mol Molecular mass of CO2 = 12 + 2(16) = 44g/mol number of moles = mass / molecular mass number of moles = 220g / 44g/mol = 5.0mol 1 mole of substance contains approximately 6.02 x 10^23 of its particles 5.0 moles of CO2 have 5.0 x 6.02 x 10^23 = 3.01 x 10^24 CO2 molecules. Each CO2 molecule contains 2 oxygen atoms. Total number of Oxygen atom = 2 x 3.01 x 10^24 = 6.02 x 10^24 atoms
How many molecules of any gas at STP occupy a volume of 22.41 Liters?
We use, PV =nRT. (1 atmosphere)( 44.8 L) = n(0.08206 L*atm/mol*K)*(298.15 K) 44.8/24.4662 = 1.831 moles of said gas ---------------------------------------now, 1.831 moles of said gas (6.022 X 1023/1 mole said gas) = 1.10 X 1024 molecules of said gas ----------------------------------------------
How many moles of oxygen are in one mole of P4O10?
10 moles of oxygen atoms or 5 moles of oxygen molecules.
How many atoms are in oxygen gas?
Oxygen gas (O2) is diatomic, meaning it consists of two oxygen atoms chemically bonded together. Therefore, to determine the number of atoms in oxygen gas, we consider the molecular formula. In one molecule of oxygen gas (O2), there are two oxygen atoms. Avogadro's number (6.022 x 10^23) represents the number of entities (atoms, molecules, etc.) in one mole of a substance. Therefore, in one mole of oxygen gas, there are 2 moles of oxygen atoms, equivalent to approximately 1.204 x 10^24 oxygen atoms.
How many molecules in oxygen gas?
There are 1/6.022 x 1023 = 1.66 x 10-24 moles of oxygen in 1 molecule of O2.
What is the number of molecules of 0.24 moles of oxygen?
The number of molecules in 0.24 moles of oxygen can be calculated using Avogadro's number, which states that there are 6.022 x 10^23 molecules in one mole of any substance. Therefore, there are approximately 1.45 x 10^23 molecules of oxygen in 0.24 moles.
How many grams of oxygen are in 100.0g sucrose?
Ideal gas equation: pV=nRT STP is 298K (temperature) and 1 ATM (pressure). Use the ideal gas equation to calculate the number of moles of oxygen in 2L at STP. Complete oxidation means that the molecule is oxidised to carbon dioxide and water. Sucrose is C12H22O11 meaning is will be oxidised to 12 carbon dioxide and 11 water molecules (it has 12 carbon atoms and 22 hydrogen atoms in). To produce these, it will need 12x2 + 11 oxygen atoms. Since 11 atoms are already present in the sucrose, it requires an additional 24 atoms of oxygen per molecule of sucrose. One mole is a fixed number of atoms, so the ratio will stay the same. Hence 1 mole of sucrose requires 24 moles of oxygen to oxidise it fully. Divide the number of moles of oxygen you have calculated are present in the 2L by the number of moles of oxygen required to fully oxidise the sucrose (24). This tells you how many moles of sucrose you can fully oxidise with your oxygen. m=n x Mr The mass is equal to the number of moles multiplied by the relative molecular mass. You can therefore multiply your result by the molecular mass of sucrose to find how many grams of sucrose you can fully oxidise. Molecular mass is the addition of the atomic masses of each of the atoms in a molecule. Sucrose has a molecular mass of 342.3 grams/mole.
How many oxygen atoms are present in 40.0 grams of oxygen gas?
Ar of O = 16g/mol Mr of O2 = 2(16) = 32g/mol Using the formula : Number of moles = mass / Mr Number of moles = 40g / 32g/mol = 1.25mols One mole of substance contains the same number of particles as the Avogadro constant, which is 6.02 x 10^23 Number of Oxygen molecules = 1.25 x 6.02 x 10^23 = 7.525 x 10^23 Each Oxygen molecules contain two Oxygen atoms Number of Oxygen atoms = 7.525 x 10^23 = 1.505 x 10^24 atoms
How many atoms and are there in 36g of water?
1 mole of water is 18g. 36g of water is thereforeequivalent to 2 moles. 2 moles of water contains 4 moles of hydrogen and 2 moles of oxygen and so there are6 moles of atoms in 2 moles of water. 6 moles of atoms x (3.6x10^24) = 36.1x10^24 atoms
How many moles in 32g of oxygen gas?
The number of grams in a mole of a molecule is found by looking at the atomic mass of each element on the periodic table. The molar mass of an element is it's atomic mass in grams. The atomic mass of oxygen is 15.999. Since there are two atoms of oxygen in a molecule of oxygen, the molar mass of oxgen (O2) is 15.999 x 2. That comes out to 31.998g/mol, or you can round to 32 if significant figures arn't important to you.
How many moles of hydrogen are in 0.80moles of quinine?
You can figure this question out by looking up quinine to find its chemical formula. The number of moles of hydrogen will be the number of hydrogen in the chemical formula. Once you see the chemical formula is C20H24N2O2 then you know that there are 24 moles of hydrogen for every one mole of quinine.
How many moles of hydrochloric acid are in 15ml of a 0.24 M hydrochloric acid solution?
well, 15 ml is the same as 15/1000 liters, .015 L. .24 M is equal to .24 moles per liter So to find the number of moles, just multiply the number of liters by the .24 M .24 M x .015 L = .0036 moles Hydrochloric acid.
What is the number of molecules in 3.00 moles of H2S?
3.00 moles x 6.02x10^23 molecules/mole = 1.81x10^24 molecules
How many atoms are there in 5.8 moles of carbon tetrachloride?
To find this answer you multiple Avogadro's number, 6.02x10^23, by the number of moles, 5.8, to get 3.4916x 10^24.
