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Solid potassium ,K , can be reacted with molecular oxygen , O2 to form K2O. If 4.3 g of potassium are reacted with 2 dm^3 of pure O2 at 20 degree celsius and 101.325 kPa what will be the mass and/or volumes of all substances present after the reaction is complete? Include the balanced reaction
NaOH was added. Assuming no volume change, calculate the pH of the solution
if all the ice cream calories were to be butned off how long would it take him? i got 45 minutes?
A certain protein was found to contain 0.412% manganese by mass. Determine the minimum molecular mass of the protein.
Enter the half-reactions and the balanced cell reaction for the following galvanic cells. (Enter states of matter in your answer.)
Consider a galvanic cell that used the reaction: 2 Ag+(aq) + Sn(s) ? 2 Ag(s) + Sn2+(aq). Calculate the potential at 25°C for the cell given: [Ag+] = 0.010 M, [Sn2+] = 0.020 M
The overall reaction order for an elementary reaction always equals its molecularity however the overall reaction rate for multistep reaction can only be determined based on experimental data
A sample of a gas originally at 29°C and 1.25 atm pressure in a 3.0 L container is allowed to contract until the volume is 2.2 L and the temperature is 11°C.
Chemical Kinetics - Determine the time taken by a reactant to reach a particular concentration
what volume of oxygen gas will be collected if a 5gram sample of potassium permanganate decomposers at 25 degrees celcius and 1 atmospheric pressure?
The standard voltage of the cell Ag(s) | AgBr(s) | Br (aq) || Ag +(aq) | Ag(s) is +0.73 V at 25 ?C. Calculate the Ksp for AgBr.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Predict the anode, cathode, and overall cell reactions when an aqueous solution of each of the following salts is electrolyzed in a cell having
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