The molar mass of C6H12O6 is 180.1548 g/mol. The molar mass of C6 is 72.06 g/mol. So you divide the molar mass of C6 by the molar mass of C6H12O6 and multiply it by 100: (72.06g C6/180.1548g C6H1206)x100= .3999 x 100= 39.99% Carbon in glucose (40% rounded)
To go from grams to atoms, you first have to convert to moles and them to atoms. To do that, divide the amount in grams by the atomic weight (141.95 in this case) and then multiply by avagadros number (6.022×10^23). After you do all of this, you should get 8.06×10^20.
The brightness is often known as the star's apparent magnitude when they do a basic observation of how bright the star appears.
Benzene
- Benzene has low density than the water itself of about 0.9 g/cm³
Low denisty object than the water usually <u>floats on the water</u>.
Another example: orange peel which floats on water has density of about 0.84 g/cm³
