Compare two cells. One has a surface area to volume ratio of 3:1 and the other has a ratio of 6:1. Which one will have a better ability to get materials across its membrane?

Which factor is NOT critical when playing individual sports? A. excellent team work B. physical fitness C. mental focus D. advanced skill

Why the total mass of the products would be less than the total weight of the reactant after a chemical reaction?

A student is shown a simple model of particles that make up a liquid, as shown. How should the model be changed to show the particles of a solid? A. Increase the velocities of the particles, and increase the space between the particles B.

Which of the following is a downside of solar energy? A. it has reduced greenhouse gas emissions B. It is a renewable resource C. It is abundantly available D. It requires areas with good sun exposure

Which of the following is not a state of matter? a. gas b. plasma c. solid d. round

Red A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon? balloon + glass + + rod O The balloon will be attracted to the rod.

2h2o → 2h2 + o2 describe the mass of the reactants and products given the balanced chemical reaction. a. the mass of the products is 2 3 that of the reactants. b. the mass of the reactants equals the mass of the products. c.

Thea dissolves 0.33 mole of glucose into 450 mL of water. What is the concentration of the solution? a 0.73M b 1.5M c 1.0M d 14M

Which statement about AHf is true? O It is zero for any compound in its standard state. It is positive when the bonds of the product store more energy than those of the reactants.

The names of the instruments carried by the weather balloon that recorded the air pressure and air temperature