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Describe how to use the UV-Vis spectrometer. What will you use as a blank?
A 70 piece of ice at 0 is added to a sample of water at 6. All of the ice melts and the temperature of the water decreases to 0. How many grams of water were in the sample?
Calculate the mass of CuS produced and the concentration of H+ ion produced by bubbling H2S into 1.00 L of 0.10 M CuCl(aq) solution.
Problem- A process compresses steam isothermally from 400?C and 9 MPa to 50 MPa. If steam flows at 1.5 kg/s, determine the work (in kW) for the process
Consider the following grayscale electrostatic potential map. the region are labeled as to color. which atom is the most likely to be attacked by a nucleophile choose from the answers provided. (a) 1 (b) 2 (c) 3 (d) 4
the activation energy for the reaction involved in the souring of raw milk is 75kj. milk will sour in about 8 hours at 21 degrees c. how long will raw milk last in refrigeratior maintained at 5 degrees c? assume rate constant to be inversely propo..
Calculate the ph change when 25 ml of 3.0 M HCl are added to 500 ml of a solution that is 0.10 M CH3COO
It was mentioned that you should not expect the pH of distilled water to be 7.00 as ordinary measured in the laboratory. What components of the atmosphere might cause distilled water in the laboratory to have a pH
A solution contains .10 M iodide ion, I- and 0.10 M carbonate ion, CO32-.... a. If solid Pb(NO3)2 is slowly added to the solution which salt will precipitate first, PbI2 or PbCO3? What will the concentration of the first ion that precipitates when..
Problem- A 5.00mL aliquot of 2.75% wt/wt solution of hydrogen peroxide (MM= 34.016 g/mol) with density 1.05g/mL. The water temperature was 26.0°C after the reaction and the barometric pressure in the lab was 30.85in. of Hg. Calculate the volume of..
Hydrogen sulfide, H2S, is a toxic gas responsible for the odor of rotten eggs. The solubility of H 2 S (g) in water at STP is 0.195M. Explain what is the Henry's-law constant of H2S at 0°C
What would be the mass of teh magnesium hydrooxide produced per reaction in the above equation if the % yeild was 88.5%
Here it is. Analysis of several samples of a material containing only iron and oxygen gave the following results. Could these samples be the same compound
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