Chemistry, 16.06.2021 22:20, hallmansean04
Which statement best rationalizes /\ssys for combustion of methane ch4(g)+2o2(g)→co2(g)+2h2o(g)
a. there is a combustion reaction, so /\ssys will be a large negative number.
b. there are no changes os state and no change in nrxn so /\ssys will be small
c. combustion reactions are exothermic, so /\ssys also will be a large negative number
d. this is a combustion reaction so /\ssys will be a large positive number
Answers: 3
Chemistry, 22.06.2019 22:30, lizzzzi7908
Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt
Answers: 1
Chemistry, 23.06.2019 06:30, aurikmah2005
Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.
Answers: 1
Chemistry, 23.06.2019 08:20, debramknoxx
At which temperature would a reaction with ah= -220 kj/mol and as=-0.05 kj/(mol-k) be spontaneous?
Answers: 2
Which statement best rationalizes /\ssys for combustion of methane ch4(g)+2o2(g)→co2(g)+2h2o(g)
a....
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