Answers: 2
Chemistry, 22.06.2019 20:00
The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.
Answers: 3
Chemistry, 23.06.2019 11:00
Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal
Answers: 1
Chemistry, 23.06.2019 13:20
Which kind of weather usually forms over the northwest united states in the summer because of maritime polar air masses? 1 )fog 2)dry heat 3) heavy snow 4) heavy rain
Answers: 3
Chemistry, 23.06.2019 23:30
Sodium chloride can be made as follows: 2na + cl2 → 2nacl. calculate the maximum amount of nacl possible if 2.3 g of sodium was reacted with excess chlorine. show all your workings.
Answers: 3
The following balanced equation shows the decomposition of ammonia (nh3) into nitrogen (n2) and hydr...
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