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The water level in a graduated cylinder initially at 221 rises to 271 after a piece of lead is submerged. What is the mass in grams of the lead?
What is the resulting pH of this solution? b. The OCl- form of this acid is less effective as a disinfectant
Determine the volume of .450M NaPO4 is needed to precipitate all the lead(II) ions from 190.0mL of .550M Lead(II) nitrate?
Calculate (a) the mole fraction of the solute, (b) the number of moles of solute in the solution, and (c) the molecular mass of the solute.
What is the enthalpy change for the neutralization reaction of 1 mol of CsOH in kJ?
Determine what %by weight of sodium carbonate does it contain if the specific gravity of the silver nitrate solution = 1.25?
What is the volume occupied by 0.265 mol of helium gas at a pressure of 1.32 atm and a temperature of 302 K.
Hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change is -71.1 liters then determine how much PV work is done?
What does a yellow flame in the Bunsen burner indicate? How can this be corrected? Why use a funnel to transfer large volume of liquid from one container to another?
What mass of this substance must evaporate to freeze 185g of water initially at 17 degrees Celsius? (The heat of fusion of water is 334J/g; the specific heat of water is 4.18 J/g-K.)
Diethyl amine density (1.0475 g/mL) Diethyl amine MW 73 Diethyl ether density (0.714 g/mL) Hint: Consider at which temperature the reaction is run. Which of the boiling points and melting points might come into play?
The water level in a graduated cylinder initially at 211 rises to 282 after a piece of lead is submerged. What is the mass in grams of the lead.
What mass of solid sodium formate (of MW 68.01) must be added to 140 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH.
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