How many oxygen molecules are required to react
Ammonia (NH3) reacts with oxygen to give NO and water. How many O2 molecules are required to react with 68 grams of ammonia?
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The true weight of "10-pound" sacks of potatoes processed at a certain packaging house follows a normal distribution with mean of 10.1 pounds and standard deviation of 0.2 pounds.
Please explain both Poisson and exponential distributions and the difference between them. Please include extensive details for lifesaver.
A worker stands still on a roof sloped at an angle of 39° above the horizontal. He is prevented from slipping by a static frictional force of 500 N. Find the mass of the worker.
If the rider, with inertia 68 kg starts at a height hi = 4 m and ends up after the first time across the pipe at a height that is 80% of the initial height, what is the force of friction across the bottom of the pipe?
When do we use Chevbychev's theorem? with what kinds of problems? and for what purpose? please explain clearly for lifesaver.
Two air track carts move toward one another on an air track. Cart 1 has a mass of 0.47 kg and a speed of 0.9 m/s. Cart 2 has a mass of 0.65 kg. (a) What speed must cart 2 have if the total momentum of the system is to be zero?
The diameter of the pipe is .15 m at the inlet and .1 m at the exit. Calculate the mass flow rate of the steam and its speed at the pipe outlet.
The activation energy of a certain reaction is 76.7 kJ/mol. How many times faster will the reaction occur at 61°C than at -5°C?
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