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An aqueous solution contains dissolved C6H5NH3Cl and C6N5NH2. The concentration of the C6H5NH2 is 0.50 M and pH is 4.0. Kb of aniline 3.8x10-10 a) Calculate the concentration of C6H5NH3+ in this buffer solution Answer:1.9 M b) Calculate the pH after 4.0 g of NaOH(s) is added to 1.0 L of this solution
Write the balanced equation for the reaction of sodium carbonate with lead (II) nitrates. And write the net ionic equation for the reaction.
a 265- flask contains pure helium at a pressure of 761 . a second flask with a volume of 490 contains pure argon at a
An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?
What is the rate of the reaction if the concentration of CH3Br is doubled? (b) What is the rate of the reaction if the concentration of NaOH is halved
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51 g/cm3, what is the unit cell volume?
Write the element symbol and charge. How many unpaired electrons are there in the ground state of this ion
How much 5.90 M NaOh must be added to 570.0 mL of a buffer that is 0.0210 M acetic acid and 0.0230 M sodium acetate to raise the pH to 5.75
a particular coal contains 2.5 sulfur by mass. when this coal is burned the sulfur is converted into sulfur dioxide
Explain why alcohols such as ethanol and propanol are soluble in water, butanol is moderately soluble and pentanol is slightly soluble
If 5.400 g of C6H6 is burned and the heat produced from the reaction is absorbed into 5691 g of water and 21 degrees C, what is the final temperature of the water?
A quantity of 6.882g of and organic compound is dissolved in water to make 276.0 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27 degree celsius. The analysis of this compound shows that it contains 41.8% C, 4.7% H, 37.3 % O ..
Which of the following types of crystalline solids has a low melting point, is generally insoluble in water, and is a nonconductor of electricity
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