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What is the mass of a septillion molecules of water?

Answer

We know that a mole of water has a mass of 18 grams, and also that a mole contains 6.023 * 10**23 molecules. We are given 1 septillion molecules, which is 1.0 * 10**24 or also 10.0 * 10**23 molecules. Therefore we have 10/6.023 or 1.66 moles of
Q&A Related to "What is the mass of a septillion molecules of..."
You calculate it by using Avogadro's number: 6.022 x10. 23. which is one mole of substance. 1.00 x 10. 24. divided by 6.022 x 10. 23. = 10 divided by 6.022 = 1.661 mol H. 2. O. Use
http://wiki.answers.com/Q/What_is_the_mass_of_1.00...
1. Identify the molecule's chemical formula. For example, to calculate the mass of a molecule of water, you must first recognize its formula as H20. 2. Find the atomic weight of each
http://www.ehow.com/how_8272786_calculate-mass-gra...
A single water molecule has a mass of 18 g/ mol.
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