Posted by jahil on Saturday, August 21, 2010 at 1:01pm.
1. density of water is 1 g/mL. 1L = 1000 mL.
mass = volume x density
mass = 1000 mL x 1 g/mL = ??
2&3. Convert ?? grams/day to moles. moles = grams/molar mass H2O. There are 6.022 x 10^23 molecules of water in 1 mole H2O and there is 1 atom oxygen in 1 molecule H2O. Can you take it from here?
I think so could you critique this?
1. I came up with 1000grams of H20
2. 1 mole H20 X 6.022X10^23/1 mole H20=6.0222X10^23 Molecules Oxygen
3. 1 mole H20 x 1 atom of oxygen/1 mole H20= 1 atom of Oxygen
Is this correct I really am trying to learn and understand this so that I can succeed in my class not just this assignment. Your feedback is greatly appreciated Dr.BOB222 Thank You!
So if i were asked for grams of Hydrogen per day?
it would be 1 mole H20 X 2 grams of H/1 mole H20
1 is ok.
Your answer for 2 defines 1 mol as 6.022 x 10^23 molecules which we already know; in act, I wrote that in mu response.
You want 1000 g converted to moles.
1000 g x (1 mol H2O/18.015 g H2O) = ?? moles.
Then ?? moles H2O x (6.022 x10^23 molecules/1 mole H2O) = xx molecules H2O.
Then if you want to know atoms H, that is
xx molecules H2O x (2 atoms H/1 molecule H2O) = yy atoms hydrogen.
etc.
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