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One of Yuchong's childhood dreams is to travel to the Andromeda Galaxy. While abducted by the aliens, Yuchong asked the captain to take him to the Andromeda Galaxy within 50 years (before Yuchong gets too old). How fast does the ship have to travel relative to the earth, in order to realize Yuchong's dream? Express your speed as fractions of the speed of light. Count how many 9's are in your answer before the first number that is not a 9.
Please do not respond to this post as this is a duplicate post. The same question has been posted twice by mistake and there is no need for a response to this.
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
Molecular compound Y2(g), has a bond energy of 750 kJ/mol, and the molecular compound XY(g) has a bond energy of 1500 kJ/mol. Using bond-energy information, calculate ?H for the following reaction:
Calculate the time in hours which would have been required for 99.9% of the t-butyl chloride to hydrolyze, if the reactant had been allowed to proceed without the addition of extra water or heating
If 5 mL of the original unknown sample was diluted to 200 mL prior to analysis, what is the concentration of Li+ in the original solution?
The total volume of seawater is 1.5X10^21 L. Assume that seawater contains 3.1 percent sodium chloride by mass that its density 1s 1.03 g/mL. Calculate the total mass of sodium chloride.
The normal boiling point for H2Se is higher than the normal boiling point for H2S . This can be explained by larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for H2Se
What is the concentration of the exact composition of the rock salt/ water solution used on the roads? Why were we not able to use this composition in our experiment
Determine the molarity of a saturated aqueous solution of NaI formed as 25degree celsius assuming that the added NaI does not add significantly to the volume of the water?
How to improve yield for methyl-m-nitrobenzoate from nitration of methyl benzoate experiment
A 1.630 g sample of naphthalene, C10H8(s), is completely burned in a bomb calorimeter assembly and a temperature increase of 8.44°C is noted.
Potassium (atomic mass = 30.19 amu) has three isotopes with masses 38.9367 amu, 39.9640 amu, and 40.9618 amu. The abundance of the last isotope is 6.73%. Estimate the abundances of the other two isotopes
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