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What is the meaning of the term sizing as used in the textile industry. Name the substances used in sizing.
A 0.577g sample of a purified organic acid was dissolved in water and titrated potentiometrically. A plot of the data revealed a single end point after 23.39mL of 0.0994M NaOH had been introduced. Calculate the molar mass of the acid.
Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
A compound is composed of nitrogen (87.4% by mass) and hydrogen. a gaseous sample H2+N=NH2 has a density of 9*10^-7kg/mL at 600 torr and 150C
Explain the pH of a buffer system that contains 0.210 M hydrocyanic acid (HCN) as well as 0.160 M sodium cyanide (NaCN)? The pKa of hydrocyanic acid is 9.31.
a 1l flask is filled with 1.00 g of argon at 25 c . a sample of ethane vapor is added to the same flask until the total
Construct the appropriate calibration curve as described in this lab and determine the %(W/W) of fluoride in the original toothpaste sample:
A sample of helium gas occupies a volume of 38L at 780 torr and 25ºC. What volume would the gas occupy at standard temperature and pressure
Part A. At 25°C, another student has the following data for the aluminum cylinder. The uncertainty in mA, mB, and mcyl is 0.001 g.
To isolate the barium ion the hydrate was reacted with sodium carbonate to from a white precipitate of barium carbonate. Data from this reaction is given below:
Problem- For the following reactions, identify the type (combination, combustion, decomposition, displacement, methathesis [double-displacement)] neutralization), balance the reaction, and for the redox reactions identify the oxidizing agent and r..
as a chemist for an agricultural products company you have just developed a new herbicideherbigon that you think has
Calculate the pH of the solute in an aqueous solution of 0.372 M (CH3)3N(aq) if the Kb is 6.5 Ã- 10âˆ'5.
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