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When 26.5 grams of a substance absorbs 40.1 J of heat, the temperature of the substance increases from 27.0oC to 68.3oC. What is the specific heat of the substance?
25.7 J/g . oC62.5 J/g . oC-3.66 x 10-2 J/g . oC-25.7 J/g . oC3.66 x 10-2 J/g . oC
sulfate pentahydrate are made into a solution with 512.441 g of water. What is the molality of the copper sulfate solution?
calculate the percent yield for an experiment in which 5.50 g of socl2 was obtained in a reaction of 5.80 g of so2 with
the work function for chromium metal is 4.37 eV. What is the wavelength of radiation that must be supplied to metallic chromium to release an electron with a kinetic energy of 4.25x10^-18?
Phosphorus is combined with chlorine to give PClz a gaseous compound .calculate the value of z If you start with 2.097g of P and isolate 9.298g of PCLz .
An element X forms compounds XI3 and XCl3. The first compound reacts with chlorine according to the following reaction: 2XI3 + 3Cl2?2XCl3 + 3I2
In the Bohr model of the atom, are the electron in shells closer to the nucleus higher of lower in energy than electrons in shells father for the nucleus
Calculate the percent water: mass of water lost / mass of hydrated salt x 100%. E. Write the empirical formula for hydrated alum, based on your experiment.
an ice cube is placed in a beaker of water at 20 c. the ice cube partially melts and the temp of the water is lowerd to
What exactly is the difference between Group 1 elements and Group 2 elements? Select the answers below, there may be more than 1 answer to this question.
in a reaction between pure acetic acid and sodium bicarbonate 11.2 grams of sodium bicarbonate was added to 21.0 ml of
Given the following equation, how many grams of PbCO3 will dissolve when 1.5L of 1.00 M H+ is added to 6.00g of PbCO3? PbCO3(s) + 2H^+(aq) = Pb^2+(aq)+ H2O (l)+ CO2(g)
Find out the Celsius temperature of 2.49 mol of gas contained in a 1.00 L vessel at 1.8 atm pressure.
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