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Calculate the mass (kg) of an iceberg that is floating off the coast of Alaska in Winter if the density of ice is .92g/cm^3 and the volume of the iceberg is 2.0 x 10^5 m^3
Problem- After 71.0 minutes 42.0 percent of a compound is decomposed. What is the half life of the reaction assuming first order kinetics
(a) Calculate the standard molar enthalpy change (deltaHrxn°) at 400 K (not 298 K) for the following reaction (the cyclotrimerization of ethyne to benzene)
What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 1.60°C
Weigh out some salt (sodium chloride) following the two methods described below. zero the balance, Weigh and record the mass of a 50-mL beaker.
What is the pH of the solution obtained by mixing 50.00 mL of 0.1250 M HOAc and 25.00 mL of 0.1000 M NaOH
A 1.84 g sample of an alkaline Earth metal hydride was treated with an excess of dilute hydrochloric acid, as well as the resulting gas was collected in a 1.000 L container at 20 c. The measured pressure of the gas was 750.0 mmHG. A. Identify the ..
Problem- E13G4. pKa of Carboxylic Acids. Errors in experimental procedures. Assume the volume of base in the buret was not at the 0.00 mL mark when you began the titration for benzoic acid. How might this have affected your results
A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: CO2 , 124 mmHg ; Ar , 218 mmHg ; and O2, 197 mmHg . The mixture also contains helium gas. What is the partial pressure of the ..
how does the structure of an atom determine the atoms emission and absorption spectra.
As part of a soil analysis on a plot of land, Find out the ammonium content using gravimetric analysis with sodium tetraphenylborate, Na B(C6H5)4-. Unfortunately, the amount of potassium, which as well precipitates with sodium tetraphenylborate, i..
What is the name of the value that can be calculated that expresses with a number how precise and how accurate each group is?
A 220 kiln is used for vitrifying ceramics. It is currently operating at 955, and the pressure is 0.9750 . How many moles of air molecules are within the confines of the kiln
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