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how many moles of bi atoms are needed to combine with 158 mol of o atoms to make bismuth oxide
a 120 turn coil of radius 18 cm and resistance 53 is placed outside a solenoid of radius 16 cm the solenoid has 220
a piston cylinder assembly contains nitrogen initially at 20 lbfin2 80 degrees fahrenheit and occupying a volume of
an x-ray photon with a wavelength of 0120 nm scatters off a free electron at test rest the scattered photon moves off
two stars are 8 light years from earth the 550nm light from the 2 stars are barely distinguished in the diffraction
to reach a picnic basket an ant walks from his hill located at 600m 500 degress north of east to the basket located at
the hydrocarbon benzence c6h6 boils at 801 celcius how much energy is required to heat 100kg of this liquid from 200
a certain lightbulb filament when hot has a resistance of 205 the potential difference across the filament at a
modern pennies are composed of zinc and coated with copper after making several scratches in a penny a student
assuming a deuteron and a triton are at rest when they fuse according to the reaction shown below neglecting
what is the mechanism of the dehydration of 2-butanol why is sulfuric acid rather than hcl used to catalyze the
a 640 nf capacitor is initially charged by a potential difference of 140times103 v later the potential difference is
a large air conditioner has a resistance of 60 ohm and an inductive reactance of 16 ohm the air conditioner is powered
what is the longest wavelength of radiation that possesses the necessary energy to break a nitrogen-nitrogen
you are given a compound with an unknown concentration and you have five samples with known concentration of the
a quantity of 1105 ml of a koh solution is needed to neutralize 03749 g of khp what is the concentration in molarity of
an alpha particle m 668times1027 kg q 320times1019 c circularly orbits a charged sphere at a radius of 500 cm from
a system does 136 j of work on its environment and gains 66 j of heat in the processa what is the change in the
a 60 l flask contains a mixture of methane argon and helium at 45 degrees c and 175 am if the mole fractions of helium
a 117-g sample of a mixture of cyclohexane c6h12 and naphthalene c10h8 is dissolved in 179 g of benzene c6h6 the
consider a protostellar cloud with temperature t15k and radius r4000au treat the cloud as a blackbodyat what wavelength
a gas mixture with 4 mol of ar x moles of ne and y moles of xe is prepared at a pressure of 1 bar and a temperature of
a 10 kg block of ice has a temperature of -10degc the pressure is one atmosphere the block absorbs 417 106 j of heat
how many moles of methane are produced when 826 moles of co2 gas react with excess hydrogen gas co24h2-----gtch42h2o i