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A balloon is filled with gas to 165 mL at 20C. The balloon then expands to 345 mL by changing the temperature. What amount of work ( in J) is performed by the balloon?
The endpoint in the titration is "overshot" A. is the reported molar concentration of the hydrochloric acid solution too high or too low. EXPLAIN
Question- The density of H2 gas in a rigid vessel at 55 degrees C is .117 g/L. When the vessel is heated to 125 degrees C, what is the pressure in the container. (R= .08206 L at/molK)
How many liters of CO2 at 0 °C and 380 torr are obtained in the reaction of 3 g of ethane with excess O2
Calculate the number of moles of HCl in the solution dispensed and its associated error.
Enthalpy Change of Solution: How Can Chemists Use the Properties of a Solute to Predict If an Enthalpy Change of Solution Will Be Exothermic or Endothermic?
The element X occurs naturally to the extent of 70.23% 30X and the rest 32X. What is the atomic mass of X? (Use 4 sig. fig.)
Determine the entropy change when 5.60 mol of HCl(l) boils at atmospheric pressure with the following information
Calculate the energy required to raise the temperature of 160.0 g Ag from 273 K to 295 K. Please provide answer in J
a calorimeter contains 21.0 ml of water at 11.0 circc. when 2.50 g of rm x a substance with a molar mass of 65.0 gmol
Alpha helices are a kind of secondary structure in proteins. Explain what is the length of a 31-kDa single-stranded -helical protein segment? Presume a mean residue mass of 110 Da.
Assuming all of the bromobenzene is converted to phenylmagnesium bromide, what is the concentration in mol/L of a grignard solution that is prepared from 30 ml of bromobenzene, an excess of magnesium metal, and enough diethyl ether to make total v..
a argon gas sample has a volume of 795 litres at a pres-sure of 1.28 torr and a temperature of 104 degree celsius. then
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