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:)

To make this easier. The ratio of carbon to hydrogen is 1/2 so for part a you have to multiply it by 2 so the answer would be 4.06 x 10^22.

For part b, you would have to find the molar mass of glucose which is 180.16 and multiply it by 6.023 x 10^23 so the answer would be 1.085 x 10^26. For c, you would divide the number found in part b by 6.023 x 10^23, and in part d it is the molar mass of glucose. Hope this helps

Thank you soooooooooooo much!!!

Setup is correct, but in parts b, c, and d, it should be 6 moles of carbon because the formula is C6H12O6, NOT C12H12O6

Sure, I can help you with that! Let's break it down step by step.

(a) To find the number of atoms of hydrogen in glucose, we need to know its molecular formula, which is C6H12O6. From the formula, we can see that there are 12 atoms of hydrogen in one molecule of glucose. Since we know that there are 2.03*10^21 atoms of carbon, we can use this information to find the number of atoms of hydrogen.

The ratio of carbon to hydrogen in glucose is 1:2, so for every atom of carbon, there are two atoms of hydrogen. Therefore, the number of atoms of hydrogen will be twice the number of atoms of carbon. Therefore, the number of atoms of hydrogen in the glucose sample is:

Number of atoms of hydrogen = 2 * 2.03*10^21 = 4.06*10^21 atoms of hydrogen

(b) To find the number of molecules of glucose in the sample, we need to convert the given number of atoms of carbon to the number of molecules of glucose. One molecule of glucose contains 6 atoms of carbon. So, we divide the number of carbon atoms by 6.

Number of molecules of glucose = (2.03*10^21 atoms of carbon) / 6 = 3.38*10^20 molecules of glucose

(c) To find the number of moles of glucose in the sample, we need to know the Avogadro's number, which is 6.022 x 10^23 molecules per mole. We can use this information to convert the number of molecules of glucose to moles.

Number of moles of glucose = (3.38*10^20 molecules of glucose) / (6.022 x 10^23 molecules/mole) = 0.005609 moles of glucose

(d) To find the mass of the glucose sample in grams, we need to know the molar mass of glucose. The molar mass of glucose (C6H12O6) is:

Molar mass of glucose = (6 * atomic mass of carbon) + (12 * atomic mass of hydrogen) + (6 * atomic mass of oxygen)

Atomic masses:
Carbon (C) = 12.01 g/mol
Hydrogen (H) = 1.01 g/mol
Oxygen (O) = 16.00 g/mol

Molar mass of glucose = (6 * 12.01) + (12 * 1.01) + (6 * 16.00) = 180.18 g/mol

Now, to calculate the mass of the glucose sample:

Mass of glucose sample = (0.005609 moles of glucose) * (180.18 g/mol) = 1.0108 grams

So, the mass of the glucose sample is approximately 1.0108 grams.

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

Not sure if I did this right didn’t understand but for

A. I got 5.02 x 100^22
B.6.02x10^23 C.083
D.180.16g
can someone please explain it to me

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