A closed container is filled with oxygen. The pressure in the container is 205
kPa
What...
Answers: 2
Chemistry, 21.06.2019 13:00
In a closed or isolated system , matter can not be created or destroyed. it can change forms but is conserved true or false
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Chemistry, 21.06.2019 21:30
Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.
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Chemistry, 21.06.2019 22:30
1. combine iron and copper (ii) sulfate solution. (hint: iron will form the iron (iii) ion) fe + cuso4 β 2. combine lead (ii) nitrate and potassium iodide solutions. pb(no3)2+ kl β 3. combine magnesium metal and hydrochloric acid solution. mg + hcl β 4. electrolysis (splitting) of water. h2o β 5. burning magnesium. mg + o2 β
Answers: 3
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Mathematics, 28.07.2019 04:50
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Mathematics, 28.07.2019 04:50
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