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Write a net ionic equation for formation of mercury II bromide precipitate, homework help. The variables X, Y and Z represent elements which have the following electronegativity values: Determining the Heat of Reaction in Aqueous Solution, chemistry homework help. Do solutions make your head spin?
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It is analyzed for percent water in a procedure similar to the laboratory assignment with barium chloride. An empty evaporating dish was weighed and found to have a mass of The hydrated crystal was added, and the new mass was The evaporating dish with the sample was heated to remove all water and, after heating, was found to have a mass of What is the correct formula for this hydrated crystal?
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Nov 20, · A. How much heat energy, in kilojoules, is required to convert g of ice at − ∘C to water at ∘C? Express your answer to three significant figures and include the appropriate units. B. How long would it take for mol of water at ∘C to be converted completely into steam if heat were added at a constant rate of J/s?Status: Resolved.
Feb 25, · work with these formulas to find molar mass- add all the masses of elements together # of moles-given mass divided by molar mass grams- mass equals molar mass times moles atoms*10^23 times moles 1: c 2: d 3: b Dunno the restStatus: Open.
Sep 10, · Tried this a million times & I m stuck. The heat of vaporization for benzaldehyde is kJ/mol, and its normal boiling point is K. Use this information to determine benzaldehyde’s vapor pressure (in torr) at °C. Report your answer to three significant digitsStatus: Open. May 08, · 1) in nature, uranium undergoes a series of 14 decays before it reaches a stable isotope. Which staement best describes this process? A)the Status: Open.
Apr 25, · Please explain the answer so I can understand too: 1) How many moles of H2SO4 are present in L of a M H2SO4 solution? 2) What volume of M NaCl is needed for a reaction that requires g of NaCl? 3) What is the molality of a solution composed of f of acetone, (CH3)2CO, dissolved in g of water?Status: Resolved. Jan 19, · Best Answer: For problems 1 to 4, you have the ratio of conversion. Put that as a fraction (ex: 16 oz in a pound is 16oz/1lb). You flip the fraction or keep it the way it is, so you can cancel out the unit in your original coolgfile29k.gq: Resolved.