An oxygen atom has a mass of 2.66*10 to power of-23g and a glass of water has a mass of 0.050kg use this information to answer the question below be sure your answer have the correct number of significant digits
What is the mass of 1 mole of oxygen atoms? In g?
How many moles of oxygen atoms have a mass equal to the mass of a glass of water
To find the mass of 1 mole of oxygen atoms, we need to use Avogadro's number, which states that 1 mole of any substance contains 6.022 x 10^23 particles. Therefore, we need to multiply the mass of one oxygen atom by Avogadro's number.
Mass of 1 oxygen atom = 2.66 x 10^-23 g
Number of oxygen atoms in 1 mole = 6.022 x 10^23
Mass of 1 mole of oxygen atoms = (2.66 x 10^-23 g) * (6.022 x 10^23) = 16.0 g
Therefore, the mass of 1 mole of oxygen atoms is 16.0 g.
To find the number of moles of oxygen atoms that have a mass equal to the mass of a glass of water (0.050 kg), we need to convert the mass of water to grams and then divide by the molar mass of oxygen.
Mass of water in grams = 0.050 kg * 1000 g/kg = 50 g
Number of moles of oxygen atoms = (50 g) / (16.0 g/mol) = 3.13 moles
Therefore, there are approximately 3.13 moles of oxygen atoms that have a mass equal to the mass of a glass of water.
To find the mass of 1 mole of oxygen atoms, we need to use the atomic mass of oxygen. The atomic mass of oxygen (O) is approximately 16.00 g/mol.
Therefore, the mass of 1 mole of oxygen atoms is 16.00 g.
To find the number of moles of oxygen atoms that have a mass equal to the mass of a glass of water (0.050 kg), we need to convert the mass of the glass of water to grams.
1 kg = 1000 g
Therefore, the mass of the glass of water in grams is:
0.050 kg * 1000 g/kg = 50 g
Now we can calculate the number of moles using the formula:
moles = mass / molar mass
moles = 50 g / 16.00 g/mol
moles ≈ 3.13 mol
So, there are approximately 3.13 moles of oxygen atoms that have a mass equal to the mass of a glass of water.