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Two weights are tied to the ends of a wire as well as the wire is placed on a block of ice with the weights hanging down over the sides. Ultimately the wire passes through the block, however the block remains intact. The engineering students say it is based on one of the most significant equations in physical chemistry
An aqueous solution of NaCl has a mole fraction of 0.30. What is the mass of NaCl dissolved in 185.9 mL of solution
How much heat, in calories, does it take to warm 540 grams of water from 11.0 degrees Celsius to 37.0 degrees Celsius
A student who suspected he had a carbonyl compound for an unknown dissolved his solid unknown compound in acetone and the solution was analyzed by IR
the the temp gets down to 40F at night, what is the maximum allowable density of water in the room during the day when the room is 70F
Identify the oxidizing agent in the chemical reaction 2MnO4? + 5H2SO3 ? 2Mn2+ + 5SO42? + 4H+ + 3H2O. Answers: MnO4? H2SO3 Mn2+ SO42? H+
What is the minimum flow rate of water (? = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? What is the mole fraction of NH3 in the scrubbed waste gas stream?
The temperature scale is called °M and has a value of 0°M at the freezing point and 100°M at the boiling point of sodium fluoride. What would the temperature be in degrees centigrade, if it was 61.300°M
Consider the reaction H2(g) + Br2(g) 2 HBr(g), which is exothermic as written. What would be the effect on the equilibrium position of adding a suitable catalyst
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
acetylene c2h2 will burn in the presence of oxygen.2c2h2g 5o2g --gt 4co2g 2h2oghow many grams of water can be
The air pressure in the tires of an automobile is adjusted to 37 psi in SanDiego, where the air temp is 68F. The air in the tires is at the same temp as the atmosphere
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