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Naturally occurring gallium consists of two isotopes. One of those isotopes is 71Ga with an isotopic mass of 70.9247050 amu and an abundance of 39.892%. What is the mass number of the other isotope
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. determine the work function of potassium
naturally occurring gallium consists of two isotopes one of these isotopes is 71Ga with an isotopic mass of 70.9247050 amu and an abundanceof 39.892%. what is the mass number of the other isotope.
The nucleus of an atom accounts for... A-most of the size and mass of the atom. B-very little of the size and mass of the atom. C-most of the atom\'s size but very little of its mass. D-most of the
On a particular day, the barometric pressure at the top of the mountain was 334 torr. On that day, at what Celsius temperature did water boil on the top of the mountain
For the decomposition of ammonia on a tungsten surface at 1100 oC 2 NH3 N2 + 3 H2 the average rate of disappearance of NH3 over the time period from t = 0 s to t = 1417 s is found to be 3.40E-6 M s-
The reaction 2H2(g) + 2NO(g) -> 2H2O(g) + N2(g) is first order in h^2 and second order in No at a particular temperature. What is the rate law
The rate constant for a first-order reaction is 5.50 x 10-4 s-1 at 39oC and 2.32 x 10-3 s-1 at 56oC. What is the activation energy
A radar system can measure the time delay between the transmitted and reflected wave pulses from a distant airplane with an accuracy of 1.02 picoseconds. What is the accuracy in the calculated dista
What is the percent purity of the calcium hydroxide if the titration requires 21.42 mL of the acid to reach the endpoint
A sample of an ideal gas has a volume of 3.35 L at 14.40C and 1.50 atm. What is the volume of the gas at 21.60C and 0.987 atm
An automobile antilock brake system (ABS) operates the brakes at 30 pulses per second. How many times do the brakes pulse in 1.00 ds
The value of the Euro is currently $1.32 U.S. and the price of 1 liter of gasoline in France is 0.92 Euro. What is the price of 1 gallon of gasoline in U.S. dollars in France?
A virtual image is formed 22.0cm from a concave mirror having a radius of curvature of 44.0cm. find the position of the object
An ideal gas in a sealed container has an initial volume of 2.25 L. At constant pressure, it is cooled to 21.00C where its final volume is 1.70 L. What was the initial temperature
An aquarium filled with water (n=1.33) has flat glass sides whose index of refraction is 1.52. What is the critical angle from the glass to the water
If a 0.140 mM solution of MnO41- has an absorbance of 0.210 at 525 nm in a 1.000 cm cell. What is the concentration of a MnO41- solution that has absorbance of 0.620 in the same cell at that wavelen
A satellite in a circular orbit around the earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
What is the heat change in J associated with 17 g of gaseous propane at -4 oC changing to solid at -202 oC? c(propane) (g) = 2.40 J/(g.K) c(propane) (liq) = 1.65 J/(g.K) c(propane) (s) = 1.20 J/ (g.
A lens with a focal length of 60cm is sitting 90cm in front of a lens of focal length 40cm. where is the final image formed
A satellite has a mass of 6079 kg, What would be the true weight of the satellite if it were at rest on the planet's surface
Which of the following molecules would be expected to exhibit hydrogen bonding? a.methane b. hydrogen bromide c. ethanoic acid (acetic acid) d. hydrogen sulfide
The drawing shows three identical springs hanging from the ceiling. determine the weight of the block hanging from the third spring
Draw the structure of an eight-carbon alkene that would yield the following compound after treatment with ozone followed by dimethyl sulfide
A sealed container holding 0.0255 L of an ideal gas at 0.999 atm and 67C is placed into a refrigerator and cooled to 45C with no change in volume. Calculate the final pressure of the gas.