How many tons does the universe weigh?

Why must a substance be in the powder form before dissolving it? What is the combined weight of all the particles in an atomic nucleus? What is the chemical name for opal? How does thick leatherly leaves affect the rate of transpiration? What are two ways gravity helps glaciers shape landforms? How is dynamic Equilibrium Established? What is milky ways gravity compared to the earths gravity? What is the smallest parasite? How many hours a week do part-time zoologists make? Why might one get a gynecomastia plastic surgery? What do you call a small narrow water way between 2 pieces of land? What codominance is and give an example of codominant alleles explainiing why they are codominant.? How do you remove algae when you can not backwash? How are clowds formed? How is volcano eruption occur? What is a a large grassy plain called? Do fungi have flagella? What is the latitude and longitude of Santa Fe New Mexico? What are the causes that prevent a 1999 ML320 from starting? In what group of the periodic table is magnesium?