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What are the units of linear momentum? Explain how the conservation of linear momentum follows directly from Newton's first law of motion When a high diver in a swimming event springs from the board and "tucks in," a rapid spin results. Why is this?
The weight of your 1285-kg car is supported equally by its four tires, each inflated to a gauge pressure of 36.0 lb/in2. What is the area of contact each tire makes with the road?
a rigid tank contains 1.30 moles of an ideal gas. determine the number of moles of gas that must be withdrawn from the
For the reaction shown, calculate how many grams of each product form when the following amounts of reactant completely react to form products. Assume that there is more than enough of the other reactant.
A geothermal system is initially more expensive to set up than a conventional heating and cooling system but the annual operating cost are much cheaper
a weather ballon filled with helium has a volume of 1.0*10^-4L at 1.00 atm and 30.0C. it ascends to an altitude at which the pressure is only 0.60 atm and the temperature is -20.0C. what is the volume of the ballon at the higher altituda.
Problem- A 1H NMR signal is observed at 206.0 Hz (downfield of TMS) on a 125-MHz instrument. What is the observed chemical shift in parts per million (ppm)
Suppose that one needs 17.65mL of 0.1146M NaOH to titrate 25.00 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate the pH of the buffer.
A concentration cell is built based on the following half reaction by using two pieces of zinc as electrodes (each weighing 100.0 g), two Zn2+ solutions
what is the molarity of a solution that contains 36.0g of vitamin B1 hydrochloride (molar mass = 337g/mol) in 190mL of solution?
The ion-product constant for water is 1.0x10^-14 at 25 degrees Celsius and 3.8x10^-14 at 40 degrees Celcius. Is the forward process endothermic or exothermic. H2O is equal to H+ + OH-
Many metals pack in cubic unit cells. The density of a metal and length of the unit cell can be used to determine the type for packing. For example, platinum has a density of 21.45 g/cm3 and a unit cell side length
Common commercial acids and bases are aqueous solutions with the following properties: nitric acid (HNO3), density 1.42 g/cm3 and 61% solute by mass. Calculate the molarity.
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