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1. The hydrated salt is overheated and the anhydrous salt thermally decomposes, with one of the products being a gas. What will be the effect on the value reported for the percent water (too high, too low, no difference)? Briefly explain.The
2-The student handles the crucible with his bare fingers (oily) after the mass measurement butbefore the crucible is fired for the first time with ~3g hydrated salt. The oily residue burns away during firing as the water evaporates. What will be the effect on the value reported for the percent water (too high, too low, no difference)?
3.Initial and final mass measurements of the crucible, lid and contents are performed only at room temperature. Why is this important, and what will be the effect on the value reported for the percent water (too high, too low, no difference) if the crucible, lid and contents are measuredwhile hot? Briefly explain.
A mixture is made by combining 1.39 lb of salt and 5.07 lb of water. What is the percentage of salt (by mass) in this mixture?
Explain What is meant by industrial nitrogen fixation. What is produced during this process
calculate the amount of heat required to completely sublime 35.0 of solid dry ice at its sublimation temperature. the
Squalene is an important acyclic hydrocarbon whose molecular formula is C30H50. How many pi-bonds does squalene have? explain and show calculation.
calculate enthalpy change for the quantity of zinc reacted. Be sure to follow the significant figures convention in the answer you report.
If a total of 13.5 mol NaHCO3 and 4.5 mol of C6H8O7 react, how many moles of COs and NA3C6H5O7 will be produced? 3NaHCO3(aq) + C6H8O7(aq) -> 3CO2(g) + 3H2O(s) + Na3C6H5O7(aq)
What is the empirical formula of the compound if a 5.56 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 12.64 mg of CO2 and 5.16 mg of H2O
What volume of O2 at 988 mmHG and 33 degree celsius is required to synthesize 12.5 mol of NO
Calculate the molality of a 20.0 per cent by weight aqueous solution of NH4Cl. (Molecular weight: NH4Cl = 53.5) (b) If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions
Why do compounds change color when separation by TLC was repeated and dipped in an acid soultion?
What amount of the excess reagent remains after the reaction is complete in grams?
Rank neohexene, t-butylacetylene, and di-t-butylacetylene in order of acidity.Rank the following compounds from least acidic to most.
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