Chemistry, 30.01.2020 05:56 josuemarquezz27
Which statement best compares coal and ores?
both are burned for energy.
both take millions of years to form.
both require oxygen to form.
both are used to make coins.
Answers: 3
Chemistry, 21.06.2019 20:30, ksalinas7404
Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?
Answers: 2
Chemistry, 22.06.2019 22:30, SavageKidKobe
Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2
Answers: 1
Chemistry, 22.06.2019 23:00, liv467
Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?
Answers: 3
Which statement best compares coal and ores?
both are burned for energy.
both take mi...
both are burned for energy.
both take mi...
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