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An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +16.0 m/s and measures a time of 20.7 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to gravity on this planet? (positive = up, negative = down)
To determine the molecular formula of a compound - gas was mixed with calcium chloride solution,
A 500 mL graduated cylinder contains 295 mL of alcohol. if15 cL of water are added to the cylinder, what is the final volume of the solution in liters
Write the correct equation for the oxidation of zinc in 0.1 M hydrochloric acid. (WITH EXPLANATION PLEASE)
Problem- Consider the complete combustion of 10.00 g of liquid heptane (C8H18) in excess oxygen. a) What volume of carbon dioxide at stp is produced
what is the identity of the atom a when a solution containing 634 grams of acl3 was permitted to combine with an excess
Determine the actual molar and mass air/fuel ratios.- The molar percentage of each combustion product before the exhaust gas was dried for this analysis.
A gas mixture composed of helium and argon has a density of 0.670 g/L at 755 mm Hg and 298K. What is the composition of the mixture by mass
question why would you expect the heats of neutralization for hcl and nacl reaction and a hno3 and koh reaction to be
The percent composition by mass of a compound is 76.0% C, 12.8% H, and 11.2% O. the molar mass of this compound is 284.5 g/mol. Explain what is the molecular formula of the compound
Explain what are the concentrations of OH- as well as H+ in a 0.00066 M solution of Ba(OH)2 at 25C. Presume complete dissociation.
give an examples of a free-radical polymerization reaction e.g. polymerization of ethylene into polyethylene. indicate
What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.700 L of 0.180 M NaI. Assume the reaction goes to completion.
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