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IF a sample of water having a mass of 252g was heated in a microwave oven as well as absorbed 6.40*10^27 photons. Define if the temperature of the water increased from 20.00C to 98.00C, Explain what is the wavelength in cm of the microwave radiation?
A beaker with 1.60×10^2 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100M . A student adds 5.90 mL of a 0.350 M HCl solution to the beaker. How much will..
You wish to extract an organic compound from an aqueous phase into an organic layer (3 to 6 extractions with a separatory funnel). With regard to minimizing the number of transfer steps,
How many atoms of phosphorus are in 3.44 moles of phosphorus?
Suppose that the molar concentrations for CO and H2 at equilibrium are [CO] = 0.05 and H2= 0.08 . Use the formula CH3OH= Kc[CO][H2]^2 to calculate the concentration of CH3OH.
How would the observed molar mass of the unknown liquid have been affected by the following circumstances. (would it be higher than the true value, lower than the value or remain unchanged.
Would your calculation of the atomic mass of the metal be too high or too low if your hot metal sample cooled off, unbeknownst to you, while being transferred to the calorimeter?
The resulting solution is then diluted to exactly 1.00 L, at which time the pH was found to be pH 8.00. What is the concentration of H2PO4- in the solution. For phosphoric acid, Ka1 = 7.11 x 10-3, Ka2 = 6.32 x 10-8, and Ka3 = 7.1 x 10-13
how many atoms are in a body centered cubic unit cell of an atomic crystal in which all atoms are at lattice
Calculate the molality, molarity, and mole fraction of FeCl3 in a 23.6 mass % aqueous solution (d = 1.222 g/mL).
What is the effect 1 mol of ideal gas p1 =760kpa p2= 202kps T= 37dgree c T2= 155k does the volume changed. by what factor is change.
During studies of the reaction below, 2 N2H4(l) + N2O4(l) ? 3 N2(g) + 4 H2O(g) a chemical engineer measured a less-than-expected yield of N2 and discovered that the following side reaction occurs
Calcium nitrate solution is added to a solution of sodium phosphate
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