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1. Small samples of oxygen gas needed in the laboratory can be generated by a number of simple chemical reactions, such as
2 KClO3 → 2 KCl + 3 O2
According to this balanced chemical equation, how many moles of oxygen gas are produced from the reaction of one mole of KClO3? How many grams of O2 are produced?
2. Small samples of oxygen gas needed in the laboratory can be generated by a number of simple chemical reactions, such as
According to this balanced chemical equation, how many moles of oxygen gas are produced from the reaction of 245 grams of KClO3? How many grams of O2 are produced?
The lens of a slide projector with a focal length of 100.0 mm projects a slide onto a screen that is 10.0 m away. How far from the lens must the slide be placed to form a sharp image on the screen?(in cm)
Find out total vector displacement
Write an expression for the instantaneous voltage delivered by an AC generator supplying 120 V (rms) at 60 Hz
A microwave transmitter emits electromagnetic waves of a single wavelength. Determine the total power emitted by the transmitter
A hunk of aluminum is completely covered with a gold shell to form an ingot of weight 44.0N. What is the weight of the gold in the shell
A ceiling fan is rotating at 0.96 rev/s. When turned off, its lows uniformly to a stop in 2.4 minute. Find how many revolutions does the fan make in this time
(Optional: The Statistical Abstract of the United States has a table titled "Marital status of the population by age and sex" that gives the actual counts.)
Two identical loudspeakers are placed on a wall 3.00 m apart. A listener stands 5.00 m from the wall directly in front of one of the speakers. A single oscillator is driving the speakers at a frequency of 300 Hz.
A monatomic ideal gas that is initially at a pressure of 1.41×105Pa and with a volume of 7.50×102 m3 is compressed adiabatically to a volume of 4.50×102m3. How much work is done by the gas during the compression
Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. find the maximum speed he can tolerate at the lowest point of his swing? His mass is 100.0 kilogram, and the vine is 3.5 meter long
A 3.00 kg block starts from rest at the top of a 29.5° incline and slides 2.00 m down the incline in 1.25 s. Find the frictional force acting on the block
A 0.54 kg object connected to a light spring with a force constant of 18.2N/m oscillates on a frictionless horizontal surface. If the spring is compressed 4.0 cm and released from rest. Decide the maximum speed of the object.
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