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what are the possible values of n and ml the principal and angular momentum quantum numbers for an electron in a 5d
when a particular metal is illuminated with photons one electron is observed for each absorbed photon what effect would
920g na some are cast in 760g of water and allowed the reaction to occur to completion according to the following
a metal ball with a mass of 381middot10-6 kg and a charge of 521 mc has a kinetic energy of 477middot108 j it is
how much heat is required to raise the temperature of 500 grams of water from 35 degree c to 55 degrees
a cart with mass 310 g moving on a frictionless linear air track at an initial speed of 10 ms undergoes an elastic
a 2500 kg truck traveling north at 45 kmh turns east and accelerates to 56 kmha what is the change in the trucks
solid sodium peroxide na202 reacts with liquid water yielding aqueous sodium hydroxide and oxygen gas how much heat is
how many micrograms are present in 23469 g 1g 1x106 micrograms please show your work and use significant figures in the
a carnot heat engine operates between reservoirs at temperatures of 864 k and 297 k in one cycle it absorbs 1405 j heat
what is the density in gcm3 units of a solution that has a net mass of 548 g and occupies a 0050 l volume please show
a 01018 g sample of copper metal is dissolved in 14 ml of concentrated hno3 to form cu2 ions and then water is added to
a proton is fired from far away toward the nucleus of an iron atom iron is element no 26 ie q26 x 16 e -19 c what
calculate the ph of 100 ml of 30 m nh3 before and after the addition of 40 g of nh4no3 and account for the change
a 200 g sample of silver ag was heated with excess sulfur s to produce 230 g of a silver sulfide calculate the
a variable-speed drill initially turning at 400 rpm speeds up to 1300 rpm in a time interval of 10 s what is its
a -600-microc charge is moving with a speed of 640 104 ms parallel to a very long straight wire the wire is 500 cm from
in one type of computer keyboard each key holds a small metal plate that serves as one plate of a parallel-plate
the frequency factor a for a certain reaction at 75oc is 87 x 1012 s-1 and the activation energy 63 kjmol what is the
a cylindrical capacitor consists of a solid inner conducting core with radius 0200cm surrounded by an outer hollow
the first-order rate constant for the decomposition of a certain hormone in water at 25oc is 0125 yr-1 how long will it
1 which of the following reagents are used to separate metal ions in an aqueous solution containing feno33 and agno3
you are diring a car on a freeway and you happen to be behind a big truck at one moment trucks tire spins a small 15
in a coffee cup calorimeter 100ml of 010 m hclo4 is mixed with 100ml of 010 m koh the initial temperature of both
1 what volume in ml is needed for the solution of hcl to react with a sample of al 160 2al 6hcl gt 2al 3h22 calculate