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Write the net redox reaction that occurs in the galvanic cell. (1 pt) Zn(s) | Zn2+(aq) (1.00 M) || Pb2+(aq) (1.00 M)| Pb(s)
Calculate the enthalpy change for the dissolution of NH 4 NO 3 and expree your answer in units of kJ/mol.
5.00 mL of water sample was titrated for hardness with 4.15mL of 0.0200M EDTA. write the equastion for the reaction and calcualte the hardness of the water in ppm
How much heat is required to warm 213 g of ice from -46.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
How does the energy of two photons corresponding to a wavelength of 451 nm (blue light) compare with the energy of three photons corresponding to a wavelength of 704 nm (red light)?
Describe how you would make 1 L of buffer with a pH of 5.00 using only pure materials and deionized water so that the total concentration of the conjugate acid/base pair is 0.200 M. Give the amounts of the pure materials in grams if they are solid..
draw electron flow arrows and complete the lewis structures for the reaction that occurs between an alkene and hydrogen
whenever the variables in a system are constrained a degree of freedom is lost for each one so constrained. suppose for
a gas sample in a piston assembly expands doing 588 kj of work on its surroundings at the same time that 372 kj heat is
A compound X has molecular ion peaks in its mass spectrum at mass 140 and 142, and shows prominent peaks in its IR spectrum at 3150-3000 and 1600 cm^-1.
If a 190 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.1*1.0 ft, what is the average thickness of the sheet in meters?
How can one draw a best fit straight line on a temperature versus time graph to determine the temperature at which two phases (solid plus melting point) appear
A flask containing 450 mL of 0.47 M H2SO4 was accidentally knocked to the floor. How many grams of NaHCO3 do you need to put on the spill to neutralize the acid according to the following equation?
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