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A variety of ions with Na+, K+, NH4+,Pb2+, Fe2+, NO3-, Cl-, Br-, S2-, and CO32- are added in a beaker of H2O, which substances would you expect to find, If you analyzed the precipitates?
considering the given reaction: CO (g) + H2O (g) <=> CO2 (g) + H2 (g), an equilibrium mixture contains 0.500 moles each of CO2 and H2 gas, and 0.200 moles each of CO and water vapor in a 1.00 Litre container. Determine how many moles of CO2 would have to be combined at constant temperature and volume to increase the amount of CO to 0.300 moles?
If 2.00 moles of acetylene react completely with sufficient oxygen, how many grams of carbon dioxide are produced?
Calculate the mass of a single particle of Na2CO3 and the number of particles of Na2CO3 in the mixture. Do the same for K2CO3.
Indicate whether each of the following describes the oxidizing agent or the reducing agent in an oxidation-reduction reaction: a)the substance that is reduced. b)the substance that loses electrons.
Given the values of ΔH ° rxn , ΔS ° rxn , and T below, determine ΔS univ. ΔH ° rxn = 80kJ , ΔS rxn = 143J/K , T= 299K Express your answer using two significant figures.
The formation constant of a complex ion [M(NH3)4]2+(aq) is 3.8E8. If a solution is prepared by adding 0.6 mol of [M(NH3)4]Cl2 to 275.0 mL of water, what is the equilibrium concentration of free M2+(aq) ions?
How many planes of symmetry does a benzene molecule possess? What chloro-substituted benzene of formula C6HnCl6-n has exactly four planes of symmetry
Use line notation to represent the electrochemical cells for each of the following overall redox reactions. Part A: Ni2+(aq)+Mg(s) Ni(s)+Mg2+(aq)
If 3.5 mol of C3H8 and 14.0 mol O2 are placed in a closed container and they react to completion (until one reactant is completely used up), what compounds will be present in the container after the reaction and how many moles of each compound are..
Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. What is the mole fraction of NH3 in the scrubbed waste gas stream
A supernatant from a saturated calcium hydroxide solution is titrated with a standardized hydrochloric acid solution to the methyl orange endpoint
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead.
Methanol, ethanol, and n-propanol are three common alcohols. When 5.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol.
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