Q.1 ) A sample of unknown organic compound contains C. H. O and N. Combustion of 2.18g sample in excess ess oxygen yields 3.94 g CO , and 1.89 g of H , 0. A separate experiment shows that 1.23 g unknown sample contains 0.235 g nitrogen . What is the empirical formula of the compound ?

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .

Amedication is given at a dosage of 3.000 mg of medication per kg of body weight. if 0.1500 g of medication is given, then what was the patient's weight in pounds (lbs)? there are 453.59g in 1 lb.