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A stock solution is prepared by adding 10 mL of 2.5 M Ba(CN)2 to enough water to make 23 mL. What is the CN- concentration of 5 mL of the stock solution
What is the final temperature in a squeezed cold pack that contains 41.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/g*C for the solution, an initial temperature of 26.5C.
A flask contains 0.330 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
Compute the vapor pressure at 25 °C if it is given that the density of H 2 O=0.9971 g/mL , vapor pressure of H 2 O=23.76 torr, molar mass of sucrose, = 342.3 g/mol,
Chemical analysis of the two compounds reveals that 0.25 mol ACl 2 has a mass of 100.0 g and 0.50 mol BCl 2 has a mass of 125.0 g. Determine what are the molar masses of ACl 2 and BCl 2 ?
A 26.1 g sample of pure iron at 77°C is dropped into 93 g of water at 17°C. What is the final temperature of the water-iron mixture.
Using a sample of ferrous ammonium sulfate hexahydrate of 0.5585 grams needs KMnO 4 solution of 21.45 ml to reach a pink endpoint then calculate what will be tha molarity of the KMnO 4 solution?
Calculate the concentration of ions in the following solutions, [I] in AgI in AgI solution with [Ag+] = 9.6E-9 M Ksp=8.3E-17
Reaction 1 uses 0.260 of reactant, and Reaction 2 uses 0.590 of reactant. How many times faster is Reaction 2 compared to Reaction 1.
A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.
Draw a structure showing four water molecules bonded to a central water molecule by means of hydrogen bonding. Explain why the pressure of the atmosphere decreases with increasing altitude
What is the new boiling point point of water if you add 188 grams of magnesium chloride to 1250 g of water.
Find the rate of the reaction - What is the rate of the reaction?
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