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How much heat (in kJ) is needed to convert 866 g of ice at -10 degress celsius to steam at 126 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x respectively)
Determine the molarity of a saturated aqueous solution of NaI formed as 25degree celsius assuming that the added NaI does not add significantly to the volume of the water?
The tire is filled with dry air at sea level and a temperature of 60 F to 32 lb/aquare in.standard sea level pressure is 101325 Pa at 0 C (STP).
Calculate the molecular weight of sulfur if 35.5 grams of sulfur dissolve in 100.0 grams of CS2 to produce a solution that has a boiling point of 49.49 oC.
For the reaction 2HCl+Na2CO3 →2NaCl+H2O+CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP?
What is the total concentration of ions in the solution obtained by mixing 0.50 L of 0.10M solution of barium chloride with 0.50 L of 0.20 M solution of sulfuric acid.
A polymer sample combines five different molecular-weight fractions, each of equal weight. The molecular weights of these fractions increase from 20,000 to 100,000 in increments of 20,000.
if a 2.5 L of Hydrogen is collected over water at 40C and 767 mmHg, what is the volume of dry gas at standard conditions, The vapor pressure of water is 55.3 mmhg at 40 C
Explain what is meant by the discontinuous emission spectra of atoms (seen in flame tests or gas discharge tubes) and how the Bohr (Planetary) and Schrodinger (Quantum-Mechanical) model for electron structure explains these discontinuous spectra
What is the molecular weigh of acetic acid that will form 2 moles of CO2 assuming complete combustion.
In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion.
In high spin complexes, the crystal field splitting energy is small and in low spin complexes, electrons are concentrated in the lower energy orbitals.
A soln. of HCl has a specific gravity of 1.120 and contains 23.81% HCl by wt. How many grams and how many milliequivalents of HCl are present in each milliliter of the soln.?
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