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What is the velocity of an airplane flying at 300 mph if it encounters at 60 mph head wind?
A student carefully diluted 50.0mL of 6 M HCI solution in 950.0 mL of distilled water. calculate the molarity of the diluted acid solution. Explain why this diluted HCI solution cannot be used as a standard solution of acid.
Some IR-rays emit a frequency of 7.86x1012Hz
What volume of chlorine gas at 25.0 Celsius and 855 mm Hg of pressure is required to react with 84.0g of phosphorus as given
That is, it takes 4.2 years for the light it emits to reach Earth. How far away is it in metres? Give your answer to 3 sf.
the bright yellow light emitted by a sodium vapor lamp consists of two emission lines at 589.0 and 589.6 nm. what are
Calculate the concentration of the hidroxide ion in a solution where (H3O) is 0.32M. Asume the solution is at 25C and the Kw=1.0 x 10^-14.
Calculate the temp of an argon sample at 55.4 kpa and 18.6L if it occupies 25.8 L at 75 degrees C And mass of 16g
gold can be hammered into extremely thin sheets called gold leaf. if a 211-mg piece of gold density 19.32 gcm3 is
A series of chemicals were added to some AgNO3(aq). NaCl(aq) was added first to the silver nitrate solution with the end result shown below in test tube 1, NH3(aq) was then added with the end result shown in test tube 2, and HNO3(aq) was added las..
0.22 litre of an idealmonatomic gas cv 3r2 initially at 12 deg c and 1.7 atmpressure undergo an expansion against a
Compare and contrast the functions of chloroplasts and mitochondria with respect to energy production
Given the following vapor pressures at 20 degrees Celsius, arrange the compounds in order of increasing boiling point: butane, 1,650 mm Hg; acetaldehyde, 740 mm Hg; Freon-113, 284 mm Hg.
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