Chemistry, 18.03.2021 02:00, deonnaturner68p7hz7y
The water cycle is the movement of water from Earth's surface to the atmosphere and back to Earth's surface. Why do many living organisms depend on the water cycle?
A.
The water cycle evenly distributes water across Earth's surface.
B.
The water cycle renews the supply of fresh water on land.
C.
The water cycle removes salts and pollutants from the ocean.
D.
The water cycle constantly adds water to Earth's total supply.
Answers: 1
Chemistry, 21.06.2019 16:00, saby30
Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on
Answers: 1
Chemistry, 22.06.2019 06:00, VamPL
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
Answers: 1
Chemistry, 22.06.2019 06:10, gabriellestaleyga16
How many moles of gas are present if p=11 atm, v=12l, t=185k?
Answers: 1
The water cycle is the movement of water from Earth's surface to the atmosphere and back to Earth's...
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