Hydrocortisone valerate is an ingredient in hydrocortisone cream, prescribed for skin problems. its molecular formula is c26h38o6. what is the percent by mass of carbon in hydrocortisone valerate?

Answer : The percentage by mass of carbon in hydrocortisone valerate is 69.95 %.

Solution :

The molecular formula is .

The molar mass of Carbon = 12 g/mole

The molar mass of Hydrogen = 1 g/mole

The molar mass of Oxygen = 16 g/mole

First we have to calculate the mass of one mole of .

In this molecule, there are 26 carbon atom, 38 hydrogen atom and 6 oxygen atom.

Mass of 26 moles of carbon = 26 moles × 12 g/mole = 312 g

Mass of 38 moles of hydrogen = 38 moles × 1 g/mole = 38 g

Mass of 6 moles of oxygen = 6 moles × 16 g/mole = 96 g

Total mass of one mole of = 312 + 38 + 96 = 446 g

Now we have to calculate the percent by mass of carbon in hydrocortisone valerate.

%%

Therefore, the percentage by mass of carbon in hydrocortisone valerate is 69.95 %.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

its pwirhfpiwe

explanation:

because dgjpwojefopjwp