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An aqueous solution is 35 % by mass methylamine (CH3NH2) and has a density of 0.85 g/cm3. What is the pH of the resulting solution if 50 mL of this solution is diluted to 1000 mL Kb = 0.00036.
Calculate the wavelengths of the following objects: a) a muon(a subatomic particle with a mass of 1.884x10^-25 g) traveling at 3.00x10^2 m/s
The blue color of dextran blue solution is due to the well-known, blue complex formed between starches and iodine. If you only had the absorption spectrum of this solution
Some of the best laboratory vacuum systems can pump down to as few as 9.0 multiplied by 109 molecules per cubic meter of gas. Calculate the corresponding pressure, in atmospheres, assuming a temperature of 25°C.
Identify the steric number, shape, hybridization about the central atom and molecular polarity of sulphuryl chloride, SO2Cl2.
Determine what would you use to prepare 10 ml of 0.2M CaCl 2 from the 20M stock solution and find out which solution is with pH > 7, but is not an Arrhenius base in the strict sense?
what is the minimum amount of ice at 0C that must be added to the contents of a can of diet cola (340mL) to cool it from 20.5C to 0C?
calculate the amount of heat transferred when 46.0 g of {rm{CH}}_3 {rm{OH}}(g) is decomposed by this reaction at constant pressure.
does it mean that the solution will shift towards the products because there is excess of reactants? what does it mean when the solution is orange (is it shifting towards products or reactant)?
How about for a solution of nitric acid (which has pKa of -1.4) Do the calculation for a formal concentration. of 1M and for the formal concentration of 0.1M.
calculate the purity of the ammonium chloride in the sample.
A 774 mL gas sample at STP is compressed to a volume of 267 mL, and the temperature is increased to 32C. What is the new pressure of the gas in Pa? Answer in units of Pa.
Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm3). What is the den..
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