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What is the heat change in J associated with 17 g of gaseous propane at -4 oC changing to solid at -202 oC? c(propane) (g) = 2.40 J/(g.K) c(propane) (liq) = 1.65 J/(g.K) c(propane) (s) = 1.20 J/ (g.K) ?Hfus(propane) = 3.526 kJ/mol ?Hvap(propane) = 15.7 kJ/mol The freezing point of propane is -182 oC.The boiling point of propane is -42 oC. Enter your answer in scientific format with TWO DECIMAL PLACES (that is, 3 significant figures total): 1.23X104 =1.23E4. Do not include units. You will not get credit for the question if you do not use the correct format
You have a choice of a p-20 ,p-100,p-200,p-1000,a 1mL serological pipette , and a 5mL serological pipette. Which one(s) would you choose to make this standard and why? Explain how you would calibrate the pipette(s) you choose.
What is the sodium ion concentration in the final solution when 50.0 mL of 0.125 M NaCl is mixed with 50.0 mL of 0.200 M Na2SO4?
N2O4(g) + KCl(s) → NOCl(g) + KNO3(s) Find out oxidation number of each and find which one is reduced and which one is oxidized by Using oxidation number concept? Also write net ionic equation and ionic equation.
Name two important forms of injury from electricity and how to avoid them
At 50 degrees Celsius, the vapor pressures for methanol and ethanol are 406 and 222 torr, respectively. Given a mixture at 50 degrees Celsius that contains 0.2 mol of methanol and 0.1 mol of ethanol, compute the partial pressures of each liquid an..
The ice was poured out into another container leaving a wet, empty beaker that weighed 46.146g. How much ice was poured into the other container?
empirical formula for 2.80 g nitrogen and 8.00 g oxygen. what is the molecular formula empirical formula of NH2Cl, molar mass = 51.5 g/mol
Ignoring any side reactions and assuming the reaction occurs completely, how large (in kg) an oxygen candle (KClO3) would be needed to supply 8 people with enough oxygen for 24 hours on a small submarine?
Add sodium hydroxide to copper(II) nitrate and use a stirring rod to test if the solution is basic. How do you establish whether the solution is basic? (Explain what else is needed, what observations are made, and what should be observed if the so..
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
Calculate the pH of a 1.00 L solution which is made up of 0.046 mol acetic acid and 0.026 mol sodium acetate.
The Carbocation, 1,1-dimethylpropyl, formed from the dehydration of protonated 2-methyl-2-butanol.
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