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2.00 moles of a gas occupies 62.2 L at a par- ticular temperature and pressure. Its density is 0.900 g/L. What is the molar mass?
question a student measures 5.45 cm3 of chloroform using a glass syringe. given that the density of chloroform is 1.48
The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×1..
Conformational studies on ethane-1,2-diol (HOCH2-CH2OH) have shown the most stable conformation about the central C-C bond to be the gauche conformation, which is 9.6 kJ/mol (2.3 kcal/mol) more stable than the anti conformation
Determine the molarity of a solution made by dissolving 24.8 g of sodium chloride in 750.0 mL of solution
Define the terms exothermic and endothermic. In a calorimetric experiment, how does one determine whether a reaction is one or the other?
Methane and hydrogen sulfide form when 36g H2 reacts with carbon disulfide. calculate the percent yield if the actual yield of CH4 is 69.8 g
If 20.0 mL of 0.12 M cobalt(II) nitrate is reacted with 15.13 mL of 0.097 M sodium phosphate, which of the two reactants will be left over and which will be completely consumed?
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases
A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.
How did you deduce which spot corresponded to 2-naphthol on yourTLC plate that analyzed the reaction mixture at 10, 30, and 60 minutes. Did your TLC analysisindicate the presence of any 2-naphthol remaining atthe end of the 60-minute reaction time..
Show how butyric acid can be synthesized from 1-propanol. Do not use a metallorganic reagent. You will need more than one reaction.
A 25.00mL sample of 0.1966 M V2+ solution requires 48.97 mL of .3000 M Ce4+ for titration. The Ce4+ is converted to CE3+ in the titration reaction. What is the oxidation number for vanadium ion after the titratoin is complete
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