Chemistry, 03.06.2020 14:57 hoshoronline8454
PLEASE HELP DUE AT 2PM I'M DESPERATE, WILL GIVE BRAINLEST!!
1. When magnesium is burned in air, its mass increases. Explain why this is.
2. When a match is burned in air, its mass decreases. Explain why this is.
3. This equation is unbalanced Na + F2 → NaF. Explain how you know it is unbalanced.
4. Why does it need to be balanced? Refer to the conservation of mass in your answer
5. A student heats up a metal and finds that its mass increases. The students says “this is because heat has been added.” Explain why this is incorrect.
Answers: 1
Chemistry, 22.06.2019 03:00, ian2006huang
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
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Chemistry, 22.06.2019 05:00, hjamya17
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
Chemistry, 23.06.2019 07:00, ultimatesaiyan
Introduction of drugs into the gastrointestinal tract is a form of administration. a. enteral b. topical c. parenteral d. inhalation
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PLEASE HELP DUE AT 2PM I'M DESPERATE, WILL GIVE BRAINLEST!!
1. When magnesium is burned in air, its...
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