help with percentages????

• Aug 14th 2009, 06:44 AM
abo
help with percentages????
Hi i need a little help working something out i need to figure out 10% of 1000ml but the 10% needs to be in grams. I have confused myself so thought i would ask for some help!!!! So if some one could explain it to me that would be great! thank you so much!!!! x
• Aug 14th 2009, 06:50 AM
stapel
Grams measure mass; liters measure volume. So you'll need the density information in order to convert from milliliters to grams. Only then can you find ten percent.
• Aug 26th 2009, 06:17 AM
Wilmer
Quote:

Originally Posted by abo
Hi i need a little help working something out i need to figure out 10% of 1000ml but the 10% needs to be in grams. I have confused myself so thought i would ask for some help!!!! So if some one could explain it to me that would be great! thank you so much!!!! x

10% of 1000 = 1000 * .10 = 100ml

Now you're stuck!! Milligrams?
• Aug 26th 2009, 07:17 AM
HallsofIvy
Quote:

Originally Posted by abo
Hi i need a little help working something out i need to figure out 10% of 1000ml but the 10% needs to be in grams. I have confused myself so thought i would ask for some help!!!! So if some one could explain it to me that would be great! thank you so much!!!! x

10% of 1000 ml is 100 ml, of course. Now one ml of water (at standard temperature and pressure) has a mass of 1 gram. Is that what you are talking about?

As others have told you "ml" and "grams" measure different kinds of things. It is only the special case of water that they can be equated. For other things, it depends on the density.
• Aug 26th 2009, 09:58 PM