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use the half reaction method to balance each of the following in acidic solution except as indicated
The following half reaction takes place in a lead storage battery used in automobiles: Pb(s)+SO4^2-(aq)>PbSO4(s)+2e^- a)is the half reaction an oxidation or reduction
An air bubble has a volume of 0.500 L at 18 degrees C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? a) 0 degrees C; b) 425 K; c) -12 degrees
The contacts worn by a farsighted person allow her to see objects clearly that are as close as 25.0 cm, even though her uncorrected near point is 84.0 cm from her eyes, How far away is the poster ac
a)is the half reaction an oxidation or reduction b)what substance is oxidized or reduced c)at which electrode would this half reaction occur
The telescope at a small observatory has objective and eyepiece focal lengths of 16.0 m and 12 cm, respectively. determine angular magnification of the telescope
A 120 V potential difference is applied to a space heater whose resistance is 22.6 ohms when hot, How much thermal energy is produced in 8.8 hours
the lowest pressure attained in a "vacuum" in a laboratory on the earth is 1X10^-17 atm at a termperature of 4.1 K. what is the number of molecules per cubic centimeter in this vacuum
A gas has a volume of 4.00 L at 0 degrees C. What final temperature, in degrees C, is needed to cause the volume of the gas to change to the following, if "n" and "P" are not changed? a) 100. L; b)
A charge q is distributed uniformly around a thin ring of radius r, What is the magnitude of the magnetic moment of the rotating charge
The heater used to heat 1400 L of air in a hot air balloon is turned off. c) A balloon filled with helium at an amusement park is left in a car on a hot day.
Suppose that electrical energy costs about $0.098/(kW · hour), If the electric potential provided by the electric company was 120 V, what was the average current in all circuits in the author'
describe the voltaic cell and half cell components and write the shorthand notation for the following oxidation-reduction reactions: a)Mn(s)+Sn^2+(aq)>Mn^2+(aq)+Sn(s) b) Ni(s)+2Ag^+(aq)>Ni^2+
A sample of methane (CH4) has a volume of 25 mL at a pressure of 0.80 atm. What is the volume of the gas at each of the following pressures if there is no change in temperature? a) 0.40 atm; b) 2.00
Suppose you have a lens system that is to be used primarily for 770 nm light. What is the second thinnest coating of fluorite that would be nonreflective for this wavelength
A tank of oxygen holds 20.0 L of oxygen (O2) at a pressure of 15.0 atm. When the gas is released, it provides 300. L of oxygen. What is the pressure of this same gas at a volume of 300. L and consta
A hydrogen atom has an angular momentum of 1.055x10^-34 kg.m^2/s. According to the Bohr model, what is the energy (eV) associated with this state
Write the half reactions and the overall cell reaction for each of the following voltaic cells: a)Al(s)/Al^3+(aq)//Cd^2+(aq)/Cd(s) b)Sn(s)/Sn^2+(aq)//Fe^3+(aq),Fe^2+(aq)/C (graphite)
Calculate delta E, delta S, delta G, Q and W for the melting of 1.00 mole of ice to for liquid water at 0 degree celcius and 1.00 atm pressure. The standard molar enthalpy of fusion of ice is 6.01 k
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone (between the elbow and the shoulder joint), What is the compressional strain of the humerus
A Student dispenses 24.95 mL of a hydrochloric acid solution with an unknown concentration into an Erlenmeyer flask. The student then titrates the HCl solution with 0.168 M sodium hydroxide. If 24.3
Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing for a healthy young person, What is the largest possible value for the frequency of the other ultraso
use the half reaction method to balance each of the following in acidic solution except as indicated:
A transverse wave on a string has an amplitude of 0.223 m and a frequency of 194 Hz. How much time passes between the first two instants when this particle has a displacement of y = 0.114 m
The air in a 5.00-L tank has a pressure of 1.20 atm. What is the new pressure, in atm, of the air when the air is placed in tanks that have the following volumes if there is no change in temperature