Recent content by Varanasi

How do you deduct from the dG values that iron ore requires more energy to smelt? I tried to come to that conclusion but am unsure how...

1. Homework Statement 10) Both iron (III) oxide and copper (IV) oxide are mined for use as primary ores in the production of pure iron and copper respectively. Historically, the earliest use of copper tools appears to be around 4500 BC. Iron tools appear much later; European artifacts have...

Thanks :)

I guess I should have clarified I found the answer online - its a former AP multiple choice my teacher gave us to prepare for a midterm The AP answer sheet says the answer is A

Here is the question 5. A long board is free to slide on a sheet of frictionless ice. As shown in the top view above, a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation, which of the following occurs? A) Linear momentum is...