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a convenient measure of the performance of a refrigerator is expressed by the coefficient of performance w which is the
there are many paramagnetic solids that have internal energies which depend only on temperature like an ideal gasin an
aluminum reacts with chlorine gas to form aluminum chloride via the following
prove that it is impossible for two reversible adiabatics to intersecthint assume that they do intersect and complete
a solution contains naphthalene c10h8 dissolved in hexane c6h14 at a concentration of 1455 naphthalene by mass
take an ideal monatomic gasgamma 53around the carnot cycle where thnbsp 600 k and tlnbsp 300k point 1 at the beginning
a cleaning solution is found to have a oh- 32 x 10-12m what is the h3o and is the solution acidic or
what are the spectator ions of the following reactionh2so4nbspaq 2 koh aq k2so4nbspaq 2h2o
a sample has a specific heat of 0155 calgmiddotdegc how much energy will be required to raise the temperature of the
take an ideal monatomic gasgamma 53around the carnot cycle where point 1 at the beginning of the adiabatic compression
write the elemental symbol with charge for when aluminum forms an ion and tell whether it is an anion or a cation think
a 120 ml sample of a compound has a density of 144 gml what is the weight of the sample in
1 for the following reaction at 25oc deltaho -1069 kj and deltaso 289 jka 4b rarr 3c 3dwhat is deltagoat 442oc in kj2
antimony reacts with sulfur according to the following reaction2sbs 3ss rarr sb2s3swhat is the mass percent yield from
1 how many atoms are in 107 g of na2 the element x occurs naturally to the extent of 7023 30x and the rest 32x what is
the following reaction takes place at a certain elevated temperaturefe2o3s 3cog rarr 2fel 3co2swhat is the percent
an inventor claims to have developed an engine that takes in 100000btu at a temperature of 400 k rejects 40000 btu at a
when 450 g of mgoh2nbspreacts with 450 g of hcl according to the equation below mgoh2nbspproduces 0772 mol of
a carnot engine absorbs 100j of heat from a reservoir at the temperature of the normal boiling point of water and
a ground state h-atom absorbs a photon of wavelength 9491 nm and its electron attains a higher energylevel the atom
imagine an irreversible engine i and a carnot engine r operating between the same two reservoirssuppose that they
draw a symbolic diagram of a set of carnot engines with the following characteristicseach engine absorbs the heat
the initial state of 01 mol of an ideal monatomic gas is ponbsp 32pa and vonbsp 8m3nbsp the final state is p1 1 pa and
jenny and mark complete a reactivity experiment by placing samples of metals into water they initially place small
explain why acidic rain produced as a result of excess sulphur dioxide in the atmosphere can cause degradation of