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- A stone is thrown at an angle of 300 above the horizontal from the top edge of a cliff with an initial speed of 14 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 7.1 s.
a) What is the height of the cliff?
b) How far out from the cliff's edge does the stone travel horizontally?
-A quarterback takes the ball from the line of scrimmage, runs backward for 12 yards, then sideways parallel to the line of scrimmage for 18 yards. He then throws a 47-yard forward pass straight downfield perpendicular to the line of scrimmage. The receiver is tackled immediately. How far is the football displaced from its original position?
Compute the volume of 0.20 M NaOH required bringing the pH of 20mL of 5% acetic acid to 4.74, the pKa of acetic acid
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 8.80 of silver by 10.2
What is the major, neutral organic product when the following goes under an SN1 reaction: 2-bromo-1-methylpentane reacts with -OH (hydroxide ion)
Why cutaneous glands, hair, and nails are made up entirely of dead cells? Why loose connective tissue is an example of adipose?
titrate the first HA solution with 87.4 mL of 0.0906 M NaOH and the mixture of HA and HB in the second flask with 94.0 mL of the NaOH solution. Calculate the molarity of the HA and HB solutions.
The recommended concentration is 1.7% W/V. What mass of TSP is needed to make 3.0 L of solution?
Question- If an unknown forms a silver mirror in the Tollens test, forms a purple color in the Schiff test, produces no precipitate in the iodoform test, has a refractvie index of 1.5250, and forms a semicarbazone melting at 124-126 C, what is its..
a 155 gram sample of copper was heated to 150 degrees celsius then placed into 250 gram of water at 19.8 degrees
Expand to final volume at constant pressure and then adjust to final temperature by interaction with a heat bath.
A photon of wavelength 200 nm strikes the surface of a metal causing an electron to be ejected with kinetic energy of 4.3 x 10-19 J.
The reaction below is performed in a 1.0-L vessel. Explain what pressure of NOCl must you put into the empty vessel at the start with if you want to end up with 0.23atm of Cl2 at equilibrium. 2 NOCl(g) 2 NO(g) + Cl2(g) K
what would the product of the reaction between 1,3-dimethoxybenzene and tert-butanol in the presence
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