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Chemistry, 22.06.2019 05:20
Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.
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Chemistry, 22.06.2019 06:00
Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced
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Chemistry, 22.06.2019 12:30
Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?
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Computers and Technology, 19.07.2019 05:10
Mathematics, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10
Computers and Technology, 19.07.2019 05:10