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Problem- Pure copper may be produced by the reaction of copper(I) sulfide with oxygen gas as follows: Cu2S(s) + O2(g) ï?® 2Cu(s) + SO2(g) If 0.680 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced?
Give your answer with short explanation
how glycine buffers solutions at either pKa by consuming small amounts of added hydrogen or hydroxide ions
Problem- Show how to snthesize 3-decne rom acetylene and necessary alkl halides. Show the reagents and inermediaes involved in the synthesis.
Calculate the pH after the following amounts of NaOH are added. A) 0mL NaOH added( before the titration started)
Ozonolysis of A followed by dimethyl sulfide reduction produces a single optically active compound C, C5H8O2. Reduction of C with ethereal LiAlH4 affords optically active compound D (C5H12O2) of the (S)-configuration. The 13C NMR spectrum of D is ..
If a piece of aluminum with mass 3.90 g and a temperature of 99.3 degrees celcius is dropped into 10.0 cm cubed of water at 22.6 degrees celcius, what will be the final temperature of the system?
A 25.0-mL sample of 0.35 M HCOOH is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka = 1.77 × 10-4
if air is composed of 21 oxygen and 79 nitrogen at 1 bar could be separated into its pure components each at 1 bar and
How many total moles of ions are released when the following sample dissolves completely in water. 8.47x10^-2g of Ca(NO3)2
a) Write the next ionic equations for the precipitation reaction or reactions that occur. b) What are the spectator ions in the solution?
Consider the reaction of aluminum chloride (AlCl3) with sulfuric acid (H2SO4):2AlCl3(aq) + 3H2SO4(aq) ? Al2(SO4)3(aq) + 6HCl(aq) (a) 2.67 g of aluminum chloride is reacted with 1.96 g of sulfuric acid. Calculate the moles of aluminum chloride and s..
how do you calcalculate a cube of an unknown metal measures 1.61mm on one side. the mass of the cube is 36mg. which of
What is the minimum uncertainty in the position of an electron, given that we know nothing about its speed except that it is less than the speed of light
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