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An unknown amount of KCl was added to 250 mL of water @ 35 degrees C and formed a clear solution. The temperature was lowered to 25 degrees C, and the solution remained clear. Was the solution at 35 degrees C saturated?
What would you expect to happen to the sizes of these bubbles if they were connected with a tube without bursting either bubble?
what is the theoretical yield of nitrogen in grams from part (a)? c) if the actual yield of nitrogen in the reaction in part (a) is 30.3g calculate the percent yield.
Calculate the mass of the solvent (CCl4) in kg. Use the molality calculated in question 2 and the solvent mass calculated in question 3 to determine the number of moles of solute present in this solution.
Draw the structure of the geometric isomer of 2-pentene that has the lower melting point.
Suppose you decide to define your own temperature scale using the freezing point (13 C ) and boiling point (360 C) of oleic acid, the main component of olive oil
The raw sewage of a wastewater treatment plant has a BOD5 of 230 mg/L and suspended solids of 350 mg/L. Estimate the BOD5 and suspended solids concentrations in the primary effluent (assume typical removal efficiency for both parameters).
If the melting point of the compound is unknown the melting point measurement could take an exceedingly long time if the rate of heating of 2C/min is followed over the entire range from room temperature to the melting.
In some solar-heated homes, heat from the sun is stored in rocks during the day and then released during the cooler night. (a) Calculate the amount of heat required to raise the temperature of 78.7 kg of rocks from 25.0°C to 43.0°C.
Calculate the pH of a solution resulting from the titration of 50mL of 0.04M HBr with 25 mL of 0.107M KOH. Give your answer to two decimal places
Calculate the ionic strength of (a) 0.0061 M NaOH (b) 0.0005 M La(IO3)3 Assume complete dissociation at this low concentration and no hydrolysis reaction to form LaOH2.
Phosphate can buffer in three pH ranges. Give the chemical formulas of the buffer pairs and give the range in which each buffers. Start with H3PO4/ H2PO4-1
Describe each reaction and provide the name of all the chemical formula involved for each number.
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