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

Hydrogen? twice the number of Carbon.

molecules of glucose? 1/6 the number of carbon atoms.

To find the number of atoms of hydrogen in a sample of glucose, we can use the ratio of carbon atoms to hydrogen atoms in the molecule. The molecular formula of glucose (C6H12O6) tells us that for every 6 carbon atoms (C), there are 12 hydrogen atoms (H).

Since we know the number of carbon atoms (1.300x10^21), we can set up a ratio based on the molecular formula:

6 carbon atoms = 12 hydrogen atoms

Now, we can solve for the number of hydrogen atoms:

(1.300x10^21 carbon atoms) * (12 hydrogen atoms / 6 carbon atoms) = 2.600x10^21 hydrogen atoms

Therefore, the sample of glucose contains 2.600x10^21 atoms of hydrogen.

To find the number of molecules of glucose in the sample, we need to know Avogadro's number, which is approximately 6.022x10^23 molecules/mol.

We can use the given number of carbon atoms to calculate the number of moles of carbon:

(1.300x10^21 carbon atoms) / (6.022x10^23 atoms/mol) = 2.159x10^-3 moles of carbon

Since the molecular formula of glucose tells us that there are 6 carbon atoms per molecule, we can set up a ratio:

6 carbon atoms = 1 molecule

Now, we can solve for the number of molecules of glucose:

(2.159x10^-3 moles of carbon) * (1 molecule / 6 carbon atoms) = 3.598x10^-4 molecules of glucose

Therefore, the sample of glucose contains 3.598x10^-4 molecules of glucose.