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A stone is thrown downward with a velocity of 66 feet per secound (45MPH) from a bridge that is 120 feet above the river.
A) Write a formula s(t) that models the hight of the stone after t seconds.
b) Does the stone hit the water within the first two seconds? Explain.
What is the enthalpy of combustion of this fuel in kJ/mol? The specific heat capacity of water is 4.184 J/g-°C.
barium metal crystallizes in a body-centered cubic lattic. The unit cell edge length is 502 pm, and the density of the metal is 3.50 g/cm3. Using this information.
a given mass of neon gas has a volume of 25.0 liters at a pressure of .75 atm. if the pressure is changed to 300.0 torr and the temperature remains constant , what will the volume of neon be
Restricting yourself to straight-chain (unbranched) compounds, draw the structures of the possible constitutional isomers of pentene. There are two "variables" -- the position of the double bond; and cis/trans isomerization at that double bond.
Are these mass or mole percents? About how many pounds and pound-moles of each element is carried around in a 155 pound person
The products of a specific reaction and the side products or impurities? Explain specifically what would be observed for this pair of compounds: 4-bromoacetanilide and 2-bromoacetanilide
With what minimum speed must Fran leave the ground in order to lift her center of mass 1.95 m and cross the bar with a speed of 0.70 m/s?
ir wavelengths ultraviolet radiation is of particular relevance to a study of the ozone layer. why? what about uv
Calculate the pH of a solution that is 1.00 M HNO2 and 1.00 M NANO2
The activation energy of a certain reaction is 50.0 . At 22 , the rate constant is . At what temperature in degrees Celsius
how do the densities of metals can be calculated? could this method be used for determining the density of mercury as
Suppose that 0.650mol of methane, \rm CH_4(g), is reacted with 0.800mol of fluorine, \rm F_2(g), forming \rm CF_4(g) and \rm HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released
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