How many atoms of hydrogen are there in 18 grams of water?

Answer

There are 1.204 x 10^24 atoms of hydrogen present in 18 grams of water. In order to calculate this, it is necessary to compute the number of hydrogen moles present in the sample.

A molecule of water consists of a single atom of oxygen and two atoms of hydrogen. Oxygen has an atomic weight of 15.9994. One mole of oxygen, therefore, has a mass of just under 16 grams. Hydrogen has an atomic weight of 1.0079, and so a mole of hydrogen weighs just over 1 gram. This means that 18 grams of water contains one 16-gram mole of oxygen and two 1-gram moles of hydrogen. The number of particles in a mole is a constant known as Avogadro's number, which has a value of 6.022 x 10^23. Two moles of hydrogen, therefore, is double Avogadro's number.

Q&A Related to "How many atoms of hydrogen are there in 18 grams..."
6.6x1022 per gram of water.
http://wiki.answers.com/Q/How_many_atoms_of_hydrog...
240.00 grams H2O x (1 mole H2O / 18.00 grams H2O) x (2 mole H/ 1
http://www.chacha.com/question/how-many-hydrogen-a...
ok you have H20 ---> 2H+ + O-2 Molar mass of H20 2 H at 1.01g each = 2.02g 1 O at 16.00g each = 16.00g total = 18.02 g of H20 141g of H20 / 18.02g of H20 = 7.825 mole you need
http://answers.yahoo.com/question/index?qid=200901...
In a water molecule, the angle between
http://www.chacha.com/question/how-many-degrees-is...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com