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The initial temperature of a 344 g sample of iron is 18.2 deg C. If the sample absorbs 2.25 kJof energy as heat, what is its final temperature?
is it possible to synthesize 1-bromo-4-nitrobenzene by reacting bromobenzene with a mixture of nitric and sulfuric acids. However, 1-bromo-4-nitrobenzene is not obtained if nitrobenzene is reacted with Br2/FeBr3. Explain the difference
using a flow diagram show the separation of a mixture containing p-bromoacetanilide
How do you draw S-2 and connect with bonds? Include all lone pairs of electrons and nonbonding electrons and show the charge of the atom.
The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water?
a cook wants to heat 1.37 of water from 27.0 to 100.0 .if he uses the combustion of natural gas which is exothermic to
Suggest simple laboratory tests you could use to distinguish acetone, carbon tetrachloride, cyclohexane, ethyl ether and ethanol.
What is the range of acetaminophen dosages, expressed in mg accetaminophen/kg body weight, for chidren who weigh between 24 and 35 b?
What would the name of the species in the aqueous layer be when the mixture mentioned above is extracted with either sodium hydroxide or sodium bicarbonate?
The radioactive decay of a certain sample produced 936 disintegrations per minute. Exactly 3.00 days later, the rate of decay was found to be 511 disintegrations per minute. Calculate the half-life, in days, for the decay of this sample.
When 1.43g of the hydrocarbon is burned, 2.39 grams of water and 4.40 grams of carbon dioxide is collected. Determine the empirical formula of the hydrocarbon. Name the hydrocarbon.
2Na + 2H2O ----> 2NaOH + H2 . If 7.2g of Na undergoes reaction with water and the resulting hydrogen is bruned in oxygen to produce water, how many grams of water would be produced
calculate the ph of a solution made by adding 18 g of sodium acetate nach3coo to 20. g of acetic acid ch3cooh and
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