An elementary school teacher wanted to teach his students about the density of different objects. His father worked in a machine shop with a variety of materials--wood, steel, aluminum, and titanium. He asked his father to make a cube which measured 1.000 cm on each side. He agreed. A month later, the father brought a beautiful shining cube of steel to his son’s classroom. The sides of the cube were mirror smooth and the edges were razor sharp. It looked beautiful, like a work of art. The father said to his son, “This cube cost $500. Since you are my son and a teacher, the company is willing to donate it to you. If you want another cube, though, you will have to pay for it yourself.” Why did it cost so much to create the steel cube for the teacher?

__can be defined as which velocity changes

Express the following number in scientific notation. 0.026890 =

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