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Joe constructs an electrochemical cell with the following material: Nickel metal in 0.1M nickel nitrate solution Copper metal in 0.1M copper nitrate solution The solutions are joined by a simple salt bridge. The nickel corrodes and the copper plates on during operation of the cell. Answer the following question: What is the cell voltage?
a. 0.24 volts
b. 0.43 volts
c. 0.57 volts
d. 0.64 volts
e. 0.87 volts
Calculate the altitude at which only 10% of the mass of the atmosphre is above and 90% of the mass of the atmosphere is below.
Write a structural and a line-angle formula of propene (C3H6). Write the IUPAC name. On the structure, specify a shape of each carbon
The normal melting point of napthalene is 353.05K. When the solution becomes saturated at 310k, we expect the mole fraction of napthalene in the saturated solution.
The ice was poured out into another container leaving a wet, empty beaker that weighed 46.146g. How much ice was poured into the other container?
For the following reaction, 5.43 grams of potassium hydroxide are mixed with excess carbon dioxide. The reaction yields 6.09 grams of potassium carbonate.
Calculate the average atomic made of boron which has 2 isotopes. Boron-10 has an abundance of 19.9% and boron-11 has an abundance of 80.1%.
A sample of gas is collected over water at a temperature of 35.0C when the barometric pressure reading is 763 torr. What is the partial pressure of the dry gas, given PH2O =42.2 torr?
A mixture of pentane and hexane has a vapor pressure of 258 torr. The standard vapor pressure of pentane is 425 torr. What is the mole fraction of pentane?
Arrange the molecules in order of decreasing boiling point Molecules are methane, dimethyl ether
A gaseous mixture of O2 and N2 contains 36.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 545 mmHg ?
What is the molarity of the NaBr produced when 50.0 ml of 4.80 M NaOh is mixed with 150.0 ml of 160 M HBr?
A 9.70-g piece of solid CO2 (dry ice) is allowed to sublime in a balloon. The final volume of the balloon is 1.00 L at 298 K. What is the pressure of the gas?
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