Chemistry, 01.11.2019 20:31 ROYALDRAGONX
1. the sun produces 3.826 x 10^26 joules of energy every second as it combines smaller hydrogen atoms into larger helium atoms. what is the name of the process which allows for the production of so much energy? a) fission b) fusion c) heation d) photosynthesis 2. thorium-229 is the radioactive substance that gives lantern mantels their eerie glow. the half life of thorium-229 is 7340 years. if one mantel consists of 0.25 grams of thorium, how much thorium will remain after 14,680 years? a) 0.0625g b) 0.125g c) 0.25g d) 1.0g
Answers: 3
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What are the 4 phases of matter in order of increasing engery content?
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Chemistry, 22.06.2019 08:00
An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.
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The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes
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1. the sun produces 3.826 x 10^26 joules of energy every second as it combines smaller hydrogen atom...
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