Natasha is looking for a material to make tires for a new jogging stroller she designed. which would be best suited to her product? A. polystyrene foam
B. nylon
C. polyethylene
D. vulcanized rubber

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

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

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?