Probability that the four horses owned by one person
A horse race has 14 entries. Assuming that there are no ties, what is the probability that the four horses owned by one person finish first, second, third, and fourth?
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Calculate the number of moles of HNO3 reacting when 50.0mL of 1.00M HNO3 and 50.5 mL of 1.00M NaOH solution are mixed.
How do you find the central atom of a chemical compound? The general way is the element with the lowest number of lone electrons but how do you know when the number is the same?
If the distance between the pitcher's point of release and the catcher's glove is exactly 60.5 ft, how many full turns does the ball make between release and catch? Neglect any effect of gravity or air resistance on the ball's flight.
Calculate the net reaction force components due to the hinge(s) in the x, y, and z directions. Assume the coordinates of A are (0,0,4) and B are (2,4,2).
Calculate the heat transferred from a reaction of 50.0 mL of 1.00MHNO3 with 50.5 mL of 1.00M NaOH solution. Assume the heat capacity of the mixture is 3.89 J g-1deg-1.
Suppose the average diameter of one of these sacs is 0.22 mm. An oxygen molecule (mass = 5.3 x 10-26 kg) trapped within a sac and the uncertainty in its position is 0.12 mm. What is the minimum uncertainty in the velocity of this oxygen molecule?
Determine the maximum error of the estimate, E. Determine the confidence level used for the given confidence interval.
The following reaction can occur when N2 andO2 com in contact at high temperatures: N2(g)+ O2(g)↔ 2NO(g). At 2400 K, theequilibrium constant, Kc, for this reaction is 2.5 x10-3.
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