How many grams of rust can be formed from 7.8 X 10^23 formula units of rust, Fe2O3?

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass

Type the correct answer in each box. use numerals instead of words. the distance between earth and the moon is about 384,400 kilometers. the distance can be written in scientific notation as a × 10b kilometers, where a = and b = .