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1)How many grams of mixture are there if 200mL of methanol is mixed with 350mL of benzene?
2)A compound is a common first-aid antiseptic. The products of its combustion reaction in the presence of oxygen gas are water and carbon dioxide. This compound is composed of carbon, hydrogen and oxygen. If 7.003 g of this compound produces 13.379 g carbon dioxide and 8.217 g water, what is the empirical formula of this compound?
3)A compound, made only from mercury and sulfur, is 86.2% HgHg by mass. The molar mass of this compound is 465 g/mol. Determine the empirical formula and the molecular formula of this compound.
Why might your sample not have the same melting range as either of the known compounds, given that it must be one of them?
What is the percent yield of 2 Na3[Co(C2O4)3]•3H2O(s) if 7.6 g is obtained from 12.5 g of [Co(H2O)6]Cl2(s)
Explain why do you see distinct lines when metal salts are burned however see a continuous spectrum when observing sunlight or light from an overhead projector
Suppose you have a 90.5-gram sample of lead at 187oC. The sample of lead losses 13.5 calories of heat. The specific heat of lead is 0.038 cal/g oC. What is the final temperature of the sample of lead
How many mL of 0.0221 M KMnO4 would it take to titrate a 0.5255 g sample of K3Fe(Ox)3? How could the results of your titration be used to determine if the sample was actually a mixture of K3Fe(Ox)3 and K4Fe(Ox)3
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
For an acid-base reaction, what is the reacting species in barium hydroxide
how much silver is plated from a solution of silver nitrate by a 2.00 a current that deposits 0.250 mol of copper from
considering the given equation as ch4g2co gco2g2h2og when methane of 15.0 moles are reacted detremine the volume of
Draw out the other two staggered Newman Projections for this molecule - What are the three most acidic ptcrtons in molecule.
The diluted solution from the second volumetric flask was found to contain 0.0274 mgNa/L.What is the concentration of Na in the first volumetric flask
Identify all of the spectator ions in the precipitation reaction below. Ca^2+ (aq) + 2Br^-(aq) + 2Li^+ (aq) + CO3^2- (aq) arrow to CaCO3 (s) + 2Li^+ (aq) + 2Br^- (aq)
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