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What is a ratio? Give several examples of ratios in everyday use.
What is the average kinetic energy (in kJ mol-1) of a hypothetical gas with molecular weight 12.8 g mol-1 at a temperature of 24.7 °C? Do not try to identify the gas.
Program code of initial name 'G' using gotoxy and for loop
The Haber process is used to synthesize ammonia (NH3) on a large scale by the reaction of nitrogen gas with hydrogen gas as follows:
N2 (g) + 3 H2 (g) → 2 NH3 (g)
Consider a reaction between a 6.79 L flask containing nitrogen gas and a 14 L flask of hydrogen gas. Both gases have a temperature of 281 K and the pressures inside both flasks is 0.88 bar.
What mass of ammonia (in g) would you expect to be produced at temperature 281 K and a pressure of 0.88 bar?
A sample of hydrogen (H2) gas was collected over water at 60°C.
If the total volume of gas collected was 60.5 mL and the atmospheric pressure was 1.1 bar, what mass (in g) of hydrogen gas was collected above the water?
The vapour pressure of water at 60°C is 150 torr.
Answer:
A flask contains a mixture of two gases: NO2 and Ne. If the flask contains 0.768 mol of NO2 and 14.8 g of Ne at a total pressure of 1.17 bar, what is the partial pressure of Ne in the flask (in bar?)
TIP: You don't need the volume of the flask nor the temperature to solve this problem.
Two circular loops A and B have their planes parallel to each other.
Loop A has a current moving in the counter clockwise direction, viewed from above.
1. If the current in loop A decreases with time, what is the direction of the induced current in loop B? Will the two loops attract or repel each other?
2. If the current in loop A increases with time, What is the direction of the induced current in loop B? Will the two loops attract or repel each other?
What is the pressure (in bar) at which a gas of molar mass 30 g/mol at temperature 24.3 °C has a density of 3.66 g/L?
NOTE: The given molar mass may not correspond to an actual gas. Do not try to identify the gas.
In a recent study, it is found that a person in a city has a 40% chance of being infected by the
flu virus. 20% of those who have been infected with the virus are symptoms free while 10% of
those who are not infected show the symptoms.
i) Draw a tree diagram to summarize the above information and label all necessary
information, including the intersection probabilities.
a boy is sitting on a swing is suspended motionless. (his feet are not touching the ground). The swing seat is supported by two ropes attached to the branch of a tree.
#340153 on Dec 2023