How many molecules of each gas are present
A sample of air contains 72.75%nitrogen, 26.45% oxygen, 0.05% carbon dioxide, and 0.75% argon, byvolume. How many molecules of each gas are present in 1.00 L of thesample at 25°C and 1.00 atm?
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Will the reported molar concentration of the sodium hydroxide solution be too high, too low, or unaffected because of the moistness of the potassium hydrogen phthalate?
A bar of 24-karat (pure) gold is supposed to be completely solid. To check this, a scientist takes the bar into the lab. Using a scale, she finds that it has a weight of 9.8 N and an apparent weight of only 9.1 N when completely immersed in water.
Determine ( a) the time required for the train to travel the first 2.5 mi, ( b) the speed of the train as it arrives at the station, ( c) the final constant deceleration of the train.
A 63.0-O resistor is connected in parallel with a 120.0-O resistor. This parallel group is connected in series with a 19.0-O resistor. The total combination is connected across a 15.0-V battery.
Calculate the maximum pressure that the walls must withstand. Also find the cycle efficiency. Assume temperature independant properties for air. For ideal gas, Pv/T = constant.
An astronaut floating in space is separated from his ship. his mass is 85.0kg and he is 10.0m for his ship. he throws a wrench mass is .800kg in opposite direction with a velocity of 20.0m/s. How long will it take him to reach the ship.
An ideal air-standard closed Brayton cycle operates between the pressures of 1 atm and P2. What is the value of the inlet pressure to the turbine?
Let Y be b(192,p). We rehect H0:p=0.75 and accept H1: p>0.75 if and only if Y>=152. Use the normal approx to determine.
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
Read "The Effect of Tart Cherry Juice Compared to a Sports Drink and Cycling Exercise Performance, Substrate Metabolism, and Recovery" from University Library
Identify and analyze one resource that provides information regarding services for dealing with and treating substance use and abuse in youth or adolescence.
Discuss how culture may influence one's perceptions. Provide an example of how culture may impact the interaction between a patient/client
Write an essay describing your achievement of a goal and your friends or family member's achievement of a goal using motivational theory
Pets can have a therapeutic effect on people; they seem to have the power to calm the anxious and cheer the depressed. Give three reasons
Review Chapter 12 and consider how your culture has impacted your worldview and personality. Pay particular attention to the section on characteristics of Cult