physical chemistry
The system N2O4 <--->2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)
Chemistry
see same question how many grams nitric acid HNO3 must be dissolved in 350 ml water to make a solution with pH of 4.5"? or "how many ml of a 4.2M nitric acid solution are required to make 500 ml of solution with pH of 2.9
Chemistry
just change the value i found it on y!A find the [H+} in pH of 4.5 , 10^-4.5 = [H+] = 3.16 e-5 molar find the moles acid in 350 ml 0.350 litres @ 3.16 e-5 mol/litre = 1.11 e-5 moles of HNO3 find the grams using molar mass: 1.11 e-5 moles of HNO3 @ 63 g/mol = 0.00070 grams of H...
Chemistry
plz answer mine The system N2O4 <--->2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)
Chemistry
The system N2O4 <--->2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)
math 3rd grade
4 x 7 = 28 Double of 4 is 8, so we will double 28 (4x2) x 7 = (28x28) or (4+4) x 7 = (28+28) answer 56)
^th grade math,
25(12) 25 (10+2) 250 + 50 (25x10+25x2) 300
physics
A 50 ohm lamp and a 10 ohm electric iron are connected in series to a generator delivering 120 V. The current through the lamp and the iron is ___ The voltage ccross the lamp is ___ The voltage drop acrowss the iron is ___ How do I set these up? Thank you.
physics
how would you measure the resistance of an electrical device, such as a lamp, by the voltmeter-ammeter method?
physics please help
What is the resistance of 125 m of aluminum wire that has a diameter of 0.8118 mm? The resistivity of aluminum is 2.824 x 10^-8 (omega) m. I need help with the set up. we've been using R = V/I, but haven't had anything with resistivity. I don't know where to place ...
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