An area of the Sun that seems much brighter than the area around it is called:
A. solar winds
B. sunspots
C. solar flares
D. electromagnetic radiation

Which best describes how johannes kepler developed his laws of planetary motion

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

In 2002, the rare earth elements mine in mountain pass, california was closed because