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An inflatable raft (unoccupied) floats down a river at an approximately constant speed of 4.9 m/s. A child on a bridge, 77 m above the river, sees the raft in the river below and attempts to drop a small stone onto the raft. The child releases the stone from rest. In order for the stone to hit the raft, what must be the horizontal distance between the raft and the bridge when the child releases the stone?
Calculate the wavelength of light that would be required to excite an electron from the HOMO to the LUMO. Hint: Recall that (triangle)E=hv=hc/lambda, and that 1 eV=1.602 x 10^-19 Joules.
Calculate the grams of SO2 gas present at STP in a 5.9 L container. A) 0.24 g B) 0.26 g C) 15 g D) 17 g E) 64 g
Given a column of air with a pressure of 1.57 x 10^5 Pa and an area of 1.12 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column
When a sample of NH3(g) (79.06 grams) is placed in 310.0 L reaction vessel at 893.0 K and allowed to come to equilibrium the mixture contains 1.654 mol of N2(g). What concentration (mol/L) of NH3(g) reacted?
For the gas phase decomposition of C2H5Cl, a graph of ln t versus 1 / T produced a straight line with a slope of 2.98 × 104 K. What is the activation energy for this reaction
How many molecules of carbon dioxide will be formed if 4.89 g of propane, C3H8, is burned with excess oxygen. Correct Answer : 2.00 × 1023 molecules
An electrical motor is used to operate a Carnot refrigerator with an interior temperature of 0.00 C. Liquid water at 0.00 C is placed into the refrigerator and transformed to ice at 0.00 C
compare the relative translational vibrational and rotational contributions to heat capacity for gaseous water and
give the structure and names of five alkenes having the molecular formula C6H12 that produce hexane on catalytic hydrogenation
Powdered coal ( essentially pure C ) is reacted with excess water to make a mixture of CO,CO2 and H2 The reaction is desired reaction ,CO2 is an undesired waste product. This gas mixture from the reactions of coal with water is further reacted ove..
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
Which choices best describes the sequence of processes leading to the formation of mid-oceanic ridge volcanoes?
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