subject
Chemistry, 19.08.2019 10:50 bNicholson23

Given the balanced equation:
4fe(s) + 3o2(g) ==> 2fe2o3(s) + 1640 kj
which phrase best describes this reaction?
(1) endothermic with dh = +1640 kj
(2) endothermic with dh = -1640 kj
(3) exothermic with dh = +1640 kj
(4) exothermic with dh = -1640 kj

ansver
Answers: 1

Another question on Chemistry

question
Chemistry, 22.06.2019 05:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
question
Chemistry, 22.06.2019 06:00
Why is permeable soil best for plants that need a lot of drainage?
Answers: 1
question
Chemistry, 22.06.2019 07:30
Using data from seismic waves, geologists have learned that earth’s interior is made up of several
Answers: 3
question
Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
Answers: 1
You know the right answer?
Given the balanced equation:
4fe(s) + 3o2(g) ==> 2fe2o3(s) + 1640 kj
which phrase be...
Questions
question
Mathematics, 24.10.2021 04:00
question
Mathematics, 24.10.2021 04:00
Questions on the website: 13722367