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50ml HCl reacted with 50ml NaOH and the change in temperature was 6.7oC. Will the temperature change increase or decrease if 25ml 1M HCl reacts with 75ml 1M NaOH?
H+(aq) + OH-(aq) ---> H2O(l) + Heat
a graduated cylinder contains 138 of water. a 12.0 piece of iron density 7.86 and a 22.0 piece of lead are added.
if 25.0 g of a solution of potassium iodide transparent and colourless and 15.0 g of a solution of lead nitrate
What is the value of q when 7.12g of water vaporizes at 373oK? The enthalpy of condensation of water at 373oK is -40.7KJ/mol.
Kevlar is a strong synthetic fiber used in bullet proof vests and body armor. Kevlar is made by the condensation reaction between 1,4-phenylene-diamine and terephthaloyl chloride. Modify the monomers below to create one repeat unit of the polymer.
What is it about the structure of ammonia that will allow it to complex with metal ions whereas the ammonium ion (from ammonium sulfate) will not form complexes
Calculate the number of moles of ions present in 66.8 g of a solution that is 2.11% Fe(NO3)3 by mass.
Given that the energy of combustion (?E) for lauric is -37.1 kJ/g, calculate the heat capacity of the bomb calorimeter. Make sure you enter kJ/C for your unit behind the number.
The total pressure of 75.0g Ar and 75.0g Rn is 2.30atm. What is the partial pressure (in atm) of Rn?
To do so she places 100.0g of water at 58.60C into the calorimeter which already contains 100.0g of water at 19.30C. The final temperature of the water in the calorimeter is 38.70C. What is the heat capacity of the calorimeter
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
Which process would have a entropy greater than 0. a. n2(g)+3H2(g) = 2nh3(g) b. ch4(g) + h2o(g) = co(g) + 3h2(g) I believe it's b. because the molar masses of the products are similar so I would say that b. has more complex species so it's entropy..
A gas sample is known to be a mixture of ethane and butane. A bulb having a 230.0-cm3 capacity is filled with the gas to a pressure of 97.5 × 103 Pa at 23.1oC. If the weight of the gas in the bulb is 0.3554 g, what is the mole percent of butane in..
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