Sage-Tips

How many he molecules are contained in a 10. 0 l 7. 53 atm and 485 k tank?

P=7.53 atm V=10 liters and T=485K. 1 mol contains Na molecules, thus 1.863 mols contain 1.863 Na molecules whic is equal to 11.219 that means approx 11.22 *10^23 molecules.

How many molecules of ammonia are contained in 10 moles of ammonia NH3?

10 mol NH3 contains 6×1024molecules NH3 .

How many molecules of water are in one mole of water?

6.022 x 1023 molecules
For example: H2O has two hydrogens and one oxygen. The atomic mass of hydrogen is 1.0078 and the atomic mass of oxygen is 15.999, so the mass of a mole of water is 2 x 1.0078 + 15.999. Therefore, a mole of water, or 6.022 x 1023 molecules, weighs 18.0146 grams.

What volume is occupied by 10 moles of ammonia NH3 at standard conditions?

The volume is 2.271 L.

How many molecules of water are there in 1 gram of water H2O?

or 1 g of water contains (6.022 x 1023)/ 18 water molecules and the number comes out to be 3.3455 x 1022. So the number of water molecules present in 1 g of water is 3.3455 x 1022.

How do you calculate the mole of water?

Mass of one mole of water = 2 g/mol + 16 g/mol = 18 g/mol.

What volume is occupied at NTP 6.022 10 21 molecules of oxygen?

Thus. volume occupied by 6.022X1023 molecules of oxygen = 22.4 L.

How many molecules are in a mole of N2?

1023 molecules
So, in one mole of nitrogen gas you have 6.022⋅1023 molecules of nitrogen gas, N2 .

What is the Avogadro constant of 1 mol of a substance?

The Avogadro constant shows that “there’s always about 6.023 x 10^23 atoms/molecules in 1 mol of any substance”. So, what “…” (mol) above is, multiply for this number “6.023 x 10^23”. You will have an answer of your question ! P.s: the text in “*” is just an explaination for you to more clearly. You can skip it if you have already known

What is the volume of gas in a balloon at 353 K?

A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253 K? A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm.

How many molecules of Na are in 1 mole of CO2?

Here first we find the number of moles of CO2 gas by formula n=PV/RT where R=1/12. P=7.53 atm V=10 liters and T=485K. 1 mol contains Na molecules, thus 1.863 mols contain 1.863 Na molecules whic is equal to 11.219 that means approx 11.22 *10^23 molecules.

What is the number of atoms in 2 mg of calcium?

There are no molecules of the metal calcium, and so the number in your question is the number of atoms in 2 mg Ca. Avogadro’s number still applies, so 40 the atomic wt of Ca has 6.02×10^23 atoms, and we call it 1 g-atom, akin to g-moles. For example, 1 g-mole of hydrogen weighs 2 g, and one g-atom of hydrogen weighs 1 g.