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.
Calculate the yield of each reactant. To review, follow the strategy outlined in How to Calculate Theoretical Yield. The mole ratios between each reactant and the product is needed to complete the calculation: The mole ratio between H 2 and H 2 O is 1 mol H 2 /1 mol H 2 O.The mole ratio between O 2 and H 2 O is 1 mol O 2 /2 mol H 2 O. The molar masses of each reactant and product are also needed.uch more water is formed from 20 grams of H 2 than 96 grams of O 2. Oxygen is the limiting reactant. After 108 grams of H 2 O forms, the reaction stops. To determine the amount of excess H 2 remaining, calculate how much H 2 is needed to produce 108 grams of H 2 O.