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Physical Chemistry
a flat piece mild steel was coated with 445 micrometers thick layer of zinc. he surface area of the plate is 85.47cm^2. the density is 7.13. how much zinc atoms are used in the coating?
Physical Chemistry
You are going to complete several meteorological tests using a large weather balloon. You wish to check the temperature at 3000 meters altitude. You want to make sure the balloon will not burst before it reaches this height. Some calculations are needed. Knowing that the balloon manufacture guarantees the balloon up to 60.0 Liters in size. Will the balloon make it to the necessary height without bursting? The temperature at ground level is 20 C. The pressure is 755 mm hg. The volume of the balloon prior to release is 44.8 Liters. It is filled with helium which is lighter than air. For both calculation you will be using PV =nRT show all work for any credit
1. What amount in grams of helium is in the balloon? Hint remember n = moles
2. Can the balloon ascend to 3000 meters without bursting? the Temperature, pressure at 3000 meters are Temp = -4 C, Pressure = .686 atm
1. What amount in grams of helium is in the balloon? Hint remember n = moles
2. Can the balloon ascend to 3000 meters without bursting? the Temperature, pressure at 3000 meters are Temp = -4 C, Pressure = .686 atm
Physical Chemistry
why electrons posses wave like properties?
Physical Chemistry
if the balloon full of gas that you produced were brought out into a cold day (-20C) and put under 3.5 atm of pressure, what would the new volume be?
Physical Chemistry
short note on the relation between chemistry on the society
Physical Chemistry
why electrons possess wave-like properties?
Physical Chemistry
If a 130-lb patient is prescribed 38mg of a cholesterol-lowering drug daily, what dosageis the patient receiving in mg/kg of his body weight?
Physical Chemistry
which governs the packing of particles in crystals?
Physical Chemistry
what is the limiting reagent when 3.1 0f 2so react with 2.7 mol of 2o according to the equation 4so+2o-6so
Physical Chemistry
how many mol of oxygen are in 12 grams of nitogen to produce sulfate
