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The alien spaceship that abducted Yuchong was traveling at 0.5c relative to the earth. Yuchong was 29 years old at the time of the abduction. By the time Yuchong is 70 years old, how many light-years is the ship away from the earth? (Assume that the ship does not stop or change direction.)
How many years will it take for a sample of 25 microcuries of tritium to decay to 3.125 microcuries
On adding 10 drops of 6M HCl solution to an unknown solution of metal ions, a CHem-127 student observed a white precipitate being formed. the white precipitate may contain
For a particle executing S.H.M, potential energy function is given by, V = 1/2kx^2 where k=0.5 N/m is the spring constant of the oscillator. If the total energy of the particle is 1 J, show that the particle turns back when x = 2 m from its mean p..
A solution containing 27.05 mg of an unknown protein per 22.0 mL solution was found to have an osmotic pressure of 3.10 torr at 12 C. What is the molar mass of the protein
the two amino acids, glycine and alanine, can form two different dipeptides. Draw one of the possible dipeptides as it would appear at a pH of 7. Be sure to include any necessary nonzero formal charges in your drawing
a give a complete analysis of the following data collected for the of sulfate in a sample 17.26 17.48 18.85 16.88
One liter of liquid phenol (density = 1.072 g/cm3) is spilled into 100 m3 of water. Assuming no loss of phenol or water from the system, what is the steady-state concentration (g/m3) of phenol dissolved in the water
The distribution coefficient, K= conc. in ligroin/conc. in water, between ligroin and water for solute A is 7.5. what weight of A would be removed from a solution of 10g of A in 100 mL of water.
At 2000C Kc is 2.4^3 for 2NO N2+O2, the initial concentration of NO is .170M what is the equilibrium concentration of NO?
100g of metal x (csp=.21 j/gC) at 200C is put into 55g of water (Csp=4.184j/gC) at 24C. what is the final temperature
Draw the structure of the organic product(s) of the reaction between (R)-3-phenylbutan-2-one and ethylmagnesium bromide, followed by acidification.
Calculate(a) the molar concentration of the ammonia and (b) the mass/mass % concentration of ammonia (17.04g/mol). given a solution density of 0.990 g/mL
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