Scientists collect evidence by making. of the world around them

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?