Determine the number of molecules in a deep breath of air
Determine the number of molecules in a deep breath of air whose volume is 2.59 L at the body temperature, 37°C, and which is having the pressure of 743torr.
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What is the volume of nitrogen at STP when the Pantothenic acid is a B vitamin. Using the Dumas method, you find that a sample weighing 55.4 mg gives 3.84 mL of nitroen gas at27*C and 745 mmHg.
Determine the 99% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two de
What mass in grams of steam at 100°C should be mixed with 298 g of ice at its melting point, in a thermally insulated container, to generate liquid water at 15.0°C? The specific heat of water is around 4186 J/kg•K. The latent heat of
Determine the change in molar entropy of aluminum that is heated from the 600 to 700°C. The heat of fusion is 393J/g, the melting point of Al is 660°C and the heat capacities of the liquid and solid may be taken as 34.4 and 31.8 J/
The ball is launched at an angle of θ = 51degrees above the ground. Find out the horizontal and vertical components of the launch velocity. Avoid acceleration due to gravity for the problem.
What is the rate of diffusion of helium gas at the same temperature if nitrogen gas has an average rate of diffusion of 0.126cm/s at the room temperature?
Transrail is bidding upon a project that it figures will cost $400,000 to perform. Using 25% markup, it will charge $500,000, netting profit of $100,000. But, it has been learned that another company,
Calculate how many grams of nickel must be added to 500 grams of copper to form an alloy that has a liquidus temperature of 1350C? Calculate the ratio of the number of nickel atoms to copper atoms in this alloy?
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