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How many milliliters of 0.105 M HCl are needed to titrate each of the following solutions to the equivalence point:
-- 55.0 mL of 0.0950 M NaOH
-- 22.5 mL of 0.118 M NH3
-- 125.0 mL of solution that contains 1.35g of NaOH per liter.
Description of Lipids 1) What are the ingredients of a cephalin? 2) Which fatty acid is always unsaturated in a cephalin? Why?
strontium metal crystalizes in a cubic unit cell which has a edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr is 2.54 g/cm3.
using equations explain how a buffer functions. buffers consist of a solution of a weak acid ha and its conjugate base
In the television series Star Trek, the transporter beam is a device used to "beam down" people from the Starship Enterprise to another location
a gas is contained in a 5.0 l container at a pressue of 100kpa. what size container would be required to contain the
Water and toluene are very good recrystallization solvents. Why is it not useful to use these solvents for a ‘quick' recrystallization?
What substances are present after the reaction is over? (Hint: Write a balanced chemical equation for the reaction first.) How many grams of water are formed?
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
Oleum or fuming sulfuric acid availble commerically in concentrations ranging from 20 to 99% sulfur trioxide. 1. What is the percentage by mass of sulfer trioxide (SO3)
Im really confused about spectroscopy and need an introduction on what it is and what these types of problems mean.
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.
Suppose you inserted a piece of copper into a solution of nickel chloride and observed no reaction. Then if you inserted a piece of iron into the solution of nickel chloride a nickel deposit formed on the bottom of the well in the well plate.
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