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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: The Detective on April 30, 2011, 12:46:13 pm

Title: Density
Post by: The Detective on April 30, 2011, 12:46:13 pm

Do we always assume a density of 1g = 1mL when it's not specified?

+

then could someone please explain this:

6.7μg in 1mL = 670μg in 100mL = 670μg in 10g?

Thanks


 

Title: Re: Density
Post by: pi on April 30, 2011, 01:28:42 pm

Quote from: The Detective on April 30, 2011, 12:46:13 pm

Do we always assume a density of 1g = 1mL when it's not specified?

Yep, density is 1 if not specified

Quote from: The Detective on April 30, 2011, 12:46:13 pm

then could someone please explain this:

6.7μg in 1mL = 670μg in 100mL = 670μg in 10g?

Thanks

if 100mL = 10g, p = m/V = 10 / 100 = 0.1 g/mL. As p < 1.0g/mL, there is less mass mer mL.