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Sprinter set a high school record in track and field, running 200.0m in 22.0s . What is the average speed of the sprinter in kilometers per hour?
an oxygen tank contains oxygen at a pressure of 70 kpa. when the pressure drops to 36 kpa the temperature increases
Using the following equation: 2AgNO3+MgBr2->2AgBr+Mg(NO3)2 calculate the moles of silver bromide and magnesium nitrate produced by 85 mol of magnesium bromide reacting with silver nitrate.
The zinc content of a 1.23 g ore sample was determined by dissolving the ore in HCl, which reacts with the zinc, and then neutralizing excess HCl with NaOH. Zn+2HCl-->ZnCl2+H2
What is the molar mass of the unknown solution containing 1.01 g of unknown in 17.74 g biphenyle froze at 42 degrees C. Pure biphenyl freezes at 71.0C
The inventor proposed the revolutionary design of the new engine based on the heat stored in the ocean. The inventor plan is to mount it on a boat in San Francisco and set off on a journey across the Pacific Ocean. Heat is extracted from the ocean
You need 70.2 J to raise the temperature of 34.0 g of ammonia from 23°C to 24°C. Calculate the heat capacity of ammonia.
The probability of filling a 3p orbital relative to the 3s orbital is 3/1. Assuming that the total Mg+ population in a given atomization source is 3.5 x 10^18 ions at any given time, what would be the number of ions that are in the excited 3p stat..
hydrogen peroxide can decompose to water and oxygen by the reaction2 h2o2l 2 h2ol o2g ?h -196 kjcalculate the
a strip of mg of mass 15g is dropped into a beaker of dilute hcl. determine the work done by the evolution of h2 in the
B2 reacts with AB to form AB2 according the the balanced equation B2+ 2AB --> 2AB2. If 1.5 moles of B2 are reacted with 1.5 moles of AB, the maximum amount of AB2 that can form is equal
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
Give equations to show how sulfuric acid can convert 4-methycyclohexene into a mixture of four isomeric C7H12 compounds (including starting material). Predict the relative amounts of each isomer.
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