Property of the mean
Explain why the sum of x-xbar (mean)=0. Explain how this is related to the property of the mean that states that the mean is the balance point of its distribution.
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A sample of nitrogen has a volume of 4.22 L at 1,941 mmHgand 170 °C. What volume will it occupy at standard temperature and pressure?
The student has a mass of 74.0 kg, and the height of the water slide is 11.4 m. If the kinetic frictional force does -5.60 x 103 J of work, how fast is the student going at the bottom of the slide?
Determine the humidity ratio of the entering air mixture. The rate of heat transfer to the moist air passing through the heating section in kJ per kg of mixture.
Imagine you are planning a pizza party for the little league team and need to feed 12 people: 8 children and 4 adults. Develop and explain a mathematical formula you could use to determine cost and estimate how many pizzas should be ordered.
A typical simplest-ratio formula for anthracite coal isC52H16O(s) .The standard enthalpy of formation of anthracite can be estimated at -396.4kJ/mol.
Water is added to the vessel until the air is saturated at 20°C. Determine the (a) mass of water added, in kg. (b) final pressure in the vessel, in bar.
When at rest, a proton experiences a net electromagnetic force that has a magnitude of 7.2 x 10-14 N and points in the positive x-direction. When the same proton later moves with a speed of 2.0 x 106m/s in the positive y-direction, the net electrom
Often, the work done is expressed in nutritional Calories rather than in joules. Express the work done in part (a) in terms of nutritional Calories, noting that 1 joule = 2.389 x 10-4 nutritional Calories.
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Scientists make predictions using the best possible and most available knowledge that they have at the time.