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What is the difference between the mass of a mole of oxygen and a mole of O2 molecules?
A mole of oxygen atoms has a mass of approximately 16 grams. A mole of O2 has a mass of approximately 32 grams. A mole is 6.02 x 1023 particles and as such a mole of oxygen atoms has only half the mass of a mole of oxygen molecules.
How many methane molecules of Ch4 have a mass equal to 3.20 grams?
One mole is equal to 6.022 x 1023 of anything. In this case, we are looking for molecules. So 1 mole=6.022 x 1023 molecules. We have 2.3 moles, so we want to know how many molecules are there. 2.3 mol CH4 x 6.022x1023 molecules CH4 / mol CH4 = 1.38x1024 molecules of CH4
How many moles are present in 288 grams of oxygen?
Oxygen is a diatomic gas, so a molecule of oxygen contains two oxygen atoms.One oxygen atom has an atomic weight of 16.00 amu (atomic mass units), so diatomic oxygen has a molecular weight of 16.00 × 2 or 32.00 amuamu (a.k.a., molar mass) are in units of grams/mol, so by dividing:8.0 g O2 ÷ 32.00 g/mol O2 = 0.25 mol O2One mol contains 6.022 × 1023 molecules (Avogadro's number), which can be multiplied by our 0.25 mol O2 to get the number of moles in 8.0 grams O2:0.25 mol O2 × (6.022 × 1023) = 1.5055 × 1023 moleculesDon't forget to round to two significant figures (limited in precision by the 8.0 grams given):There are 1.5 x 1023 molecules of O2 in 8.0 grams of O2
How many atoms hydrogen are in 18 grams of water?
to get the answer, take the mass you have divide by the molecular mass of the compound which in water's case happens to be 18g. 18g x 1mol/18g = 1 mole or 6.022x1023 molecules of H2O
What is the mass of 0.2 moles of methane?
16 grams per mole. Methane is CH4. Look at the Periodic table: Carbon is 12 grams/mole and Hydrogen is 1 gram/mole, so 1*12 + 4*1 = 16.
How many moles are in 33.9 g of water?
Avogadro's Number = Avogadro's number = 6.0221415 × 10236.02×1023 (abbreviated); this is the number of atoms, ions, molecules, or anything else in 1 mole. 0.33 moles of water would have 0.33·6.02×1023 = 1.99×1023 molecules. However water's formula is H2O, so it has 3 atoms per molecule. (0.33 moles) × (6.02×1023 molecules per mole) = 1.99×1023 molecules.1.99×1023 molecules × 3 atoms per molecule = 5.96×1023 atoms(0.33 moles) × (6.0221415 × 1023molecules per mole) = 1.987306695×1023 molecules.1.987306695×1023 molecules × 3 atoms per molecule =5.961920085 1023 atomsI would use the rounded answer, 5.96×1023 atoms
What is the difference between the mass of a mole of oxygen and a mole of O2 molecules?
A mole of oxygen atoms has a mass of approximately 16 grams. A mole of O2 has a mass of approximately 32 grams. A mole is 6.02 x 1023 particles and as such a mole of oxygen atoms has only half the mass of a mole of oxygen molecules.
What is the mass of 0.05 moles of oxygen?
One mole is 6.02 × 1023 of anything. One mole of atoms is 6.02 × 1023 atoms, one mole of rice is 6.02 × 1023 grains, one mole of shoes is 6.02 × 1023 shoes.So you multiply 5 with 6.02 × 1023 to get 3.01 × 1024
How many methane molecules of Ch4 have a mass equal to 3.20 grams?
One mole is equal to 6.022 x 1023 of anything. In this case, we are looking for molecules. So 1 mole=6.022 x 1023 molecules. We have 2.3 moles, so we want to know how many molecules are there. 2.3 mol CH4 x 6.022x1023 molecules CH4 / mol CH4 = 1.38x1024 molecules of CH4
How many molecules are in 7.2g H2O?
Formula mass / Formula weight / Molecular mass / Molecular weight of H2O = (1*2) + 16 = 18g 1 mol of H2O = 18g H2O 1 mol of H2O = 6.023 * 10^23 molecules In 18g H2O there are 6.023 * 10^23 molecules. So, In 1g H2O there are (6.023 * 10^23) / 18 molecules = 3.346 * 10^22 molecules Therefore, In 7.3g H2O there are (3.346 * 10^22) * 7.3 molecules = 2.443 * 10^23 molecules Ans: 2.443 * 10^23 molecules
What is the relationship between Avagado's number and a mole?
1 mole of a substance contains 6.02 x 1023 particles (molecules, atoms ...). This number (6.02 x 1023) is called the Avogadro's constant. the forumula: n = N / NA (NA is the Avogadro's number / constant; N = number of particles (molecules, atoms...) in the substance)
What is the mass in grams of 6.02 x 1023 atoms of sulfur?
Roughly 16 grams, if you mean 10^23. 6.022*10^23 is Avogadro's Number, which represents the number of atoms or molecules in a mole of any substance. Since the molar weight of oxygen is approximately 16 grams, that's your answer.
In 1 mole of NO2 gas how many protons are there?
N has 7 protons O has 8 protons (O2 therefore 16) So 1 molecule of NO2 gas has 7 + 16 = 23 protons 1 mole of NO2 gas (6.022 * 1023 molecules) have 138.506 * 1023 protons.
How many moles are present in 288 grams of oxygen?
Oxygen is a diatomic gas, so a molecule of oxygen contains two oxygen atoms.One oxygen atom has an atomic weight of 16.00 amu (atomic mass units), so diatomic oxygen has a molecular weight of 16.00 × 2 or 32.00 amuamu (a.k.a., molar mass) are in units of grams/mol, so by dividing:8.0 g O2 ÷ 32.00 g/mol O2 = 0.25 mol O2One mol contains 6.022 × 1023 molecules (Avogadro's number), which can be multiplied by our 0.25 mol O2 to get the number of moles in 8.0 grams O2:0.25 mol O2 × (6.022 × 1023) = 1.5055 × 1023 moleculesDon't forget to round to two significant figures (limited in precision by the 8.0 grams given):There are 1.5 x 1023 molecules of O2 in 8.0 grams of O2
How many atoms hydrogen are in 18 grams of water?
to get the answer, take the mass you have divide by the molecular mass of the compound which in water's case happens to be 18g. 18g x 1mol/18g = 1 mole or 6.022x1023 molecules of H2O
How many aluminum atoms are there in a mass of 16.2 grams?
16. 2 grams aluminum (1 mole Al/26.98 grams)(6.022 X 1023/1 mole Al) = 3.62 X 1023 atoms of aluminum -------------------------------------------
What is the mass of 0.2 moles of methane?
16 grams per mole. Methane is CH4. Look at the Periodic table: Carbon is 12 grams/mole and Hydrogen is 1 gram/mole, so 1*12 + 4*1 = 16.
