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?

Complete the reaction (NH4) 2SO4 (aq) + BaCl2 (aq)

The following chemical equation is not balanced: CO2 + H2 CH4 + H2O When this chemical equation is correctly balanced, what is the coefficient of the water molecule?

How do isotopes of carbon differ from one another?

What type of rock is pumice? Describe how a pumice rock is likely to change over a long period of time.

Which of the following best describes the rock cycle? The rock cycle is a process in which heated magma cools to form igneous rock. The rock cycle is a series of processes in which water, wind, or waves break up rocks.

Describe three skills people use to conduct scientific investigations

The surface temperature on Venus may approach 739 K. What is this temperature in degrees Celsius?

Complete the acid-base reaction between butyric acid HC4H7O2 and potassium hydroxide KOH. Do not include phase designations for any of the reactants or products. Be sure to include the charge for any charged species.

What overall effect does adding a catalyst have on a chemical reaction?

A hydrogen atom contains a single electron that moves in a circular orbit about a single proton. assume the proton is stationary, and the electron has a speed of 7.8 105 m/s.