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Combustion analysis of 2.400 g of an unknown compound containing carbon, hydrogen, and oxygen produced 4.171 g of CO2 and 2.268 g of H2O. What is the empirical formula of the compound?
Calculate the mass (grams) of KHP needed to react with 40. mL of 0.10 M NaOH. B. If 0.7528 g of KHP standard were titrated with NaOH and the endpoint was reached at 36.33 mL
Calculate the pressure that CCl4 gas will exert at 40 degrees celsius if 1.00 mol occupies 28.0 L, assuming that A. CCl4 obeys the ideal-gas law
Glass cuvette, used for precision measurements in a spectrometer, are marked so that they always have the same orientation in the sample compartment. What error does this minimize and why?
How many grams of NaOH are needed to prepare 250 g of 1.00% NaOH solution in water?
How can you tell that Cobalt(II) iodide is a binary ionic compound formed by a transition metal with more than one ionic charge?
Nitrogen and hydrogen gases are combined at high temperatures and pressures to produce ammonia, NH3. If 104.7 g of N2 are reacted with excess H2, how many moles of NH3 will be formed?
In the monochlorination of hydrocarbons, a hydrogen atom is replaced by a chlorine atom. How many different monochloro derivatives of 2-methylpentane are possible
It is also noted that NO3 is a reaction intermediate. Suggest a plausible reaction mechanism
In a laboratory investigation involving a neutralization reaction, a scientist adds potassium hydroxide to nitric acid (balanced reaction following):
Calculate the pH at the equivalence point for the titration of 0.10 M HCl with 0.10 M NH3 (Kb = 1.8 x 10-5).
how many rads does a 81- kg human receive each year from the approximate 10^-8 grams of 14 C naturally present in her body? (t 1/2 = 5,730 yr; each disintegration releases 0.156 MeV.)
How many grams of methane gas (CH4) need to be combusted to produce 18.2 L water vapor at 1.2 atm and 275 K? CH4 (g) + 2 O2 (g)-> CO2 (g) + 2 H2O (g)
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