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A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 320. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
The precipitate that forms in the qualitative analysis of the chloride ions is AgCl. Calculate the mass of AgCl that should be produced when an excess of AgNO3 is reacted with 0.1900 g of [Co(NH3)5Cl]Cl2.
Why is the water bath used to heat the reaction? 4)What is the mechanism of the reaction of phenylmagnesium bromide and CO2? Include the workup steps. 5) In this experiment, it is important to use freshly obtained dry ice. Why?
At a potential of -1.00 V vs. SCE, carbon tetrachloride (CCl4) in methanol undergoes a reduc- tion to chloroform (CHCl3) at a mercury cathode:
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
What are the molality and mole fraction of solute in a 29.3 percent by mass aqueous solution of formic acid (CH3OH)?
Consider a lake containing 39 ppb (parts per billion) of parathion, which has a log Kow = 3.8. If a sample of lake water was mixed with octanol, what is the expected concentration of parathion in the octanol?
How would you write a balanced chemical equation using structural formulas to show how acetic acid reacts weakly with water to transfer a proton and produce a hydronium and an acidic ion?
The mass of a golf ball is 45.9 g. If it leaves the tee with a speed of 78.0 m/s, what is its corresponding wavelength?
78 mL of 2.5 M phosphoric acid is neutralized with 500 mL of potassium hydroxide. What is the concentration of the base?
Calculate the molar mass of a gas if 4.40 g occupies 3.50 L at 560 torr and 41°C.
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
The amount of H2O2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate soln. MnO4-(aq)+H2O2(aq)--Mn2+(aq)+O2
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