How many protons, electrons and neutrons in F-?

When you finish using the compound brightfield microscope, what should you have your lab instructor do?

Why can polar water molecules pass through a cell membrane?

Select the correct answer. Which term describes the unstable arrangement of the reacting particles as the reaction takes place? A. reactants B. activation energy C. products D. energy of reaction E. activated complex

Which element will react violently with water?

Which of the following is true for a cell that has a nucleus? A. It will not have nuclear membrane. B. It will not have a nucleolus. C. It will not have ribosomes. D. It will not have a nucleoid.

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed

For which one of the following molecules is the indicated type of hybridization not appropriate for M the central atom? a. BeCl2 sp2 b. SiH4 sp3 c. BF3 sp2 d. C2H2 sp e. H2O sp3