# chemistry

posted by .

a sample of glucose, c6h12o6 contains 2.03*10^21 atoms of carbon.
(a)how many atoms of hydrogen does it contain?
(b)how many molecules of glucose does it contain?
(c)how many moles of glucose does it contain?
(d)what is the mass of this sample in grams?

its kinda long, but i would appreciate it if someone would guide me through it
thank you:)

• chemistry -

Molecular weight of glucose is 180.16 g/mo and its formula is C6H1206.

a.) 2.03 x10^21 atoms of carbon*(1 mol/6.02 x 10^23 atoms)*(12 moles of H/6 moles of C)*(6.02x10^23 atoms/mole of H)=atoms of H
****Notice that Avogadro's number cancels out

b.) 2.03 x10^21 atoms of carbon*(1 mol/6.02 x 10^23 atoms)*(1 mole of glucose/12 moles of C)*(6.02 x 10^23 atoms/1mole of glucose)= molecules of glucose
****Notice that Avogadro's number cancels out

c.)2.03 x10^21 atoms of carbon*(1 mol/6.02 x 10^23 atoms)*(1 mole of glucose/12 moles of C)= moles of glucose

d.2.03 x10^21 atoms of carbon*(1 mol/6.02 x 10^23 atoms)*(1 mole of glucose/12 moles of C)*(180.16 g/mole)= glucose in grams

• chemistry -

Thank you soooooooooooo much!!!

• chemistry -

42

• chemistry -

On problem C, why is the mole for Carbon 12 and not 6. Isn't the mole of H 12?

## Similar Questions

1. ### AP Biology

During aerobic respiration, glucose is broken down to form several end products. Which end products contain the carbon atoms from glucose?
2. ### chemistry

I need help doing the work, I think something might be wrong. How many glucose molecules does an E coli cell contain if it has an internal glucose concentration of 1.0 mM. The E coli is a cylinder that is 2 micrometers long and 1 micrometer …
3. ### Ap Biology

During aerobic respiration, glucose is broken down to form several end products. Which end products contain the carbon atoms from glucose?
4. ### Chemistry

A sample of glucose, C6H12O6, contains 1.300x10exponent21 atoms of carbon. How many atoms of Hydrogen does it contain?
5. ### Chemistry

A sample of glucose, C6H12O6, contains 5.1x10623. a.)How many atoms of hydrogen does it contain?
6. ### Chemistry

A sample of glucose, C6H12O6, contains 5.1x10623. a.)How many atoms of hydrogen does it contain?
7. ### Chemistry

A sample of toluene, C7H8 has a mass of 74.5 g. How many moles of benzene does it contain?
8. ### Chemistry

A sample of toluene, C7H8 has a mass of 74.5 g. a) how many molecules does the sample contain?
9. ### Chemistry

A sample of toluene, C7H8 has a mass of 74.5 g. How many carbon atoms does it contain?
10. ### gen chem

A sample of glucose C6H12O6 contains 2.03x10^21 atoms of carbon. how many atoms of hydrogen does it contain?

More Similar Questions