Select the correct answer. which scientist first proposed physical laws to mathematically describe the effect of forces on the motions of bodies? a. galileo galilei b. isaac newton c. albert einstein d. benjamin franklin

Given the following reaction: c3h8+5o2=3co2+4h20 how many grams of co2 will be produced 7 g of c3h8 and 98 g of o2

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next