Speeds of our fastest current spacecraft
Suppose you wanted to reach Alpha Centauri in 100 years.
a. How fast would you have to go, in km/hr3
b. How many times faster is the speed you found in (a) than the speeds of our fastest current spacecraft (around 50,000 km/hr)?
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One cubic meter (1.0 m3) of aluminum has a mass of 2700 kg, and a cubic meter of iron has a mass of 7860 kg. Find the radius of a solid aluminum sphere that has the same mass as a solid iron sphere of radius 4.63 cm.
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Calculate the density, mole fraction, molarity, and molality of the solution. Assume water has a density of 1.00 g/cm3.
How many times faster is the speed you found in (a) than the speeds of our fastest current spacecraft (around 50,000 km/hr)?
Write the acid/base equilibrium reaction (net-ionic) for the major species present in an aqueous solution of each of the following substances. use H3O+ as the acidic species
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