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Describe how to make a sodium formate (HCOONa)/ formic acid (HCOOH) buffer that has a pH of 4.77.
Use Lewis structures and bond energies to calculate the enthalpy change of the following reaction: HCN(g) + 2H2(g) => CH3NH2(g) a. 158 kJ b. -158 kJ c. -590 kJ d. 590 kJ e. none of these
Calculate the work, heat, energy and enthalpy change upon: a) expansion by 3.3 L at p=const (isobaric). b) isothermal expansion by 3.3. L against a constant external pressure of 30.0 kPa c) reversible isothermal expansion by 3.3 L.
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
SO3 can be produced in the following two-step process: FeS2 + O2 ---> Fe2O3 + SO2 , SO2 + O2 ----> SO3 Assuming that all the FeS2 reacts, how many grams of SO3 are produced when 20.0 g of the FeS2 reacts with 16.0 g of O2?
A 1.500 g sample of a compound containing only C, H and O was burned completely. The only combustion products were 1.738 g CO2 and 0.711 g H2O. What is the empirical formula of the compound? If the molecular mass of the compound was found to be..
Iron reacts with hydrochloric acid to produce iron (II) chloride and hydrogen gas. Fe(s) + 2 HCl(aq) -> FeCl2(aq) + H2(g) How many moles of HCl will react with 4.6 moles of Fe?
Is the molecular formula of saccharin (a) C14H10O6N2S2, (b) C5H7O3NS, (c) C8H9O2NS, or (d) C7H5O3NS?
Why do you suppose that the dehydration of cyclohexanol to cyclohexene has been the tradiotional experiment to illustrate the acid-catalyzed dehydration of an alcohol to an alkene?
From the understanding of colligative properties, how would I design an experiment to measure the freezing point of a material which freezed at -2'c using the same apparatus used in the laboratory and any chemical reagents commonly found in a chem..
basketball with a volume of 3.50 Liters is left in a car when the temperature is 298 K. What will the volume of the ball be as the car heats up to 305 K during the day?
In which of the following reactions would increasing pressure at constant temperature not change the concentrations of reactants and products, based on Le Ch telier's principle
The compound BD3 is a deuterated form of borane. Predict the product formed when 1-methylcyclohexene reacts with BD3 · THF, followed by basic hydrogen peroxide.
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