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Suggest one plausible reason for a % mass of water that is lower/higher than the true value
Since the air is going at 25 C and assuming atmospheric pressure, calculate the actual volume of air. Calculate the number of moles of CO2, H2O, O2 and N2 in the flue gas
Lactic acid, HC3H5O3, is a monoproctic acid that forms when milk sours. An 18.50 ml sample of a solution of lactic acid required 17.52 ml of 0.1550 M NaOH to reach an end point in titration.
a 1L flask contained 2g N2, 0.4g H2 and 9g O2 at 27c. what is the total pressure in the flask?
Calculate the cell potential E for a silver-silver chlroide lectrode immersed in 0.800 M KCl at 25 C.
What is the half-life of a compound if 63 percent of a given sample of the compound decomposes in 72 min? Assume first-order kinetics.
An aqueous solution is 30.0 % by mass ammonia, NH3, and has a density of 0.892 g/mL.The mole fraction of ammonia in the solution is?
A sample of 0.600 mol of a metal M reacts completely with excess fluorine to form 46.8 g of MF2. (a) How many moles of F are in the sample of MF2 that forms? M + F2 (b) How many grams of M are in this sample of MF2?
The U.S. national ambient air quality standard for CO in a 1-hr period is 35 ppm. How many times greater than this standard is the CO concentration in cigarette smoke?
A block of materials has dimensions by 3.2 cm by 8.6 cm by 4.1 cm. Its mass is 632 g. What is the density? Answer in units of of g/cm ^3
calculate the amount of cobalt(II) nitrate hexahydrate [Co(NO3)2 * 6H2O] needed to prepare 50 mL of a 0.15 M cobat(II) nitrate stock
Explain how Le Chatelier's Principle affects the extent of the dissociation of acetic acid in a buffer that is 0.10 M acetic acid and 0.10 M acetate ion
In the acid-catalyzed dehydration of alcohols, an alkene and water are the reactions products. What method of separation has been used in order to collect samples
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