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A gaseous mixture of O2 and N2 contains 40.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 625 mmHg ? Express you answer numerically in millimeters of mercury.
The volume of a sample of ethane, C2H6, is 2.66 L at 447 torr and 30 °C. What volume will it occupy at standard temperature and pressure (STP)
you have a buffer system made up of equimolar amount of carbonic acid,H2CO3, and sodium bicarbonate,NaHCO3. Write equations to show how this buffer behaves when (a) HCL is added and (b) NaOH is added.
The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank these compounds by the length of the carbon-carbon bond.
Calculate the work (in kJ) when 3.00 moles of hydrogen gas are produced from the reaction of sodium in excess water at 298 K:
Describe how you will separate the following mixture of ions in solution. Use complete sentences and include all the details but be brief and concise in all your procedures. Include an explanation/rationale of the reagent used, etc.
Ammonia condenses to form a liquid at -33.35C at atmospheric pressure. The density of liquid ammonia at this temperature is 0.6818g/ml. If the ammonia (0.224ml) is condensed at these temperatures, what would be its volume?
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
The recommended dose is 10 body weight. How many of this suspension should be given to an infant weighing 16
calculate the theoretical yield and percentage yield of cyclohexene: cyclohexanol used- 20.0 ml cyclohexene obtained- 12.0 g
Rationalize this phenomenom based on what you know regarding cyclohexane derivatives and Sn2 reactions.
Powdered coal ( essentially pure C ) is reacted with excess water to make a mixture of CO,CO2 and H2 The reaction is desired reaction ,CO2 is an undesired waste product. This gas mixture from the reactions of coal with water is further reacted ove..
Calculate the molarity of each of the following solutions 20.0 g NaCl in 1.0 L H2O
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