An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 3.00 g of this compound produced 4.40 g of carbon dioxide and 1.80 g of water. how many moles of carbon, c, were in the original sample?

0.100 moles

1 mole of CO2 = 44 g

1 mole of CO2 = 12 g of Carbon

Mass of carbon in the original sample;

 = (4.4 × 12)/44

 = 1.2 g

Moles of carbon = 1.2 /12

                           = 0.100 Moles  

Moles C in the original sample = 0.100

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".