They also are used for: 1  general anesthesia, 2  sedation prior to surgery or diagnostic procedures, 3  muscle relaxation,  alcohol withdrawal and drug associated 1  agitation, nausea and vomiting,  depression, 1  and. panic attacks.
Remember that 1 dm3 = 1 000 cm3 so the volume is also 12 000 cm3. The equation can be rearranged to find the number of moles, if the volume of gas at rtp is known: number of moles = volume of gas at rtp Ã· 24. Calculate the number of moles of hydrogen that occupy 6 dm3 at rtp. number of moles = 6 Ã· 24 = 0.25 mol.
1 Determine the moles of unknown (the solute) from the molality of the solution and the mass of solvent (in kilograms) used to make the solution. 2  Determine the molar mass from the mass of the unknown and the number of moles of unknown. Determine the molar concentration of the unknown in the solution from the observed osmotic pressure. 2  Determine the moles of unknown (the solute) from the molarity of the solution and the volume (in liters) of the solution. 3  Determine the molar mass from the mass of the unknown and the number of moles of unknown.