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Propose ways with appropriate equations that would enable you to measure the D H ° f values of Ag 2 O( s ) and CaCl 2 ( s ) from their elements. No calculations are necessary.
A sample of lead releases 221 kJ of heat when freezing. What is the mass of the sample? DHfus = 23 J/g
What is the length of the side of the unit cell for iron and what is the atomic radius?
nutritional tables give the potassium content of a standard apple as 159 mg. there are about 3 appleslb. how many
What volume of 0.300 M CaCl2 is needed to prepare 240. mL of a solution which is 0.100 M in chloride ion.
How many milliliters of 0.410 M KOH solution are needed to completely neutralize 48.2 mL of 0.151 M HI solution? The reaction is KOH(aq) + HI(aq) ? KI(aq) + H2O(l)
Equal initial pressures of hydrogen and nitrogen are added to a container at 298K where they react as in question 1. (question 1 is at the end) a. If the equilibrium pressure of hydrogen is 1.5 atm, determine the equilibrium pressures of nitrogen a..
Using appendix C, calculate the delta S values for the following reactions. In each case explain the sign of delta S.
describe and explain the possible effects on your results of the following experimental errors or variations.
the following sequence of reactions was used to synthesis compound f. compound b which is produced in step 2 is used in
Give the balanced thermochemical equation for the following reactions. show the correct physical state in each equation.
An X-ray photon of wavelength 0.978 nm strikes a surface. The emitted electron has a kinetic energy of 975 eV. What is the binding energy of the electron in kJ/mol
A balloon filled with 2.50 moles of helium has a volume of 32.4 L. What will be the new volume if 5.90 moles are added under constant temperature and pressure?
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