An iron ore sample is found to be 35.00% Fe by mass. How many grams of ore are needed to obtain 454.0 grams of Fe?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Why does his teacher ask him to balance the equation by including the correct coefficient