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.
So if in any problem, mass (gram) of solute (w) is given then first we have to divide it by molar mass (molecular weight) of solute (W) in order to find the moles of solute (n) present in the solution, and again divide moles of solute (n) by volume (liter) of solution (V) in order to find molarity (M) or molar mass of solution. So we can also write this molar concentration formula (molarity) like this, Molar concentration (M) = $\frac{Mass\ of\ solute\ (w in grams)}{Molar\ mass\ of\ solute (W)} \times [Volume of solution (V in liter)]$