Which of the following has three electrons in its valence shell?

A scientist spilled a few drops of dilute hydrochloric acid (HCI) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaHCO3) onto the spill.

When air moves upward to áreas of less air pressure what ofen forms

Which of the following holds true for volume if the temperature of a given amount of gas increases and pressure remains constant? Volume will be negative. B. Volume will decrease. OC. Volume will stay the same. OD. Volume will increase.

In the reaction between bromine and sodium, a bromine atom gains an electron. What ion is formed? Is the bromine oxidized. or is it reduced?

2. How many lone pairs are assigned to the iodine atom in IF? b. 1 c. 2 d. 3 a. 0 e. 4

When does raising the temperature of a gas increase its pressure? A. temperature B. volume C. number of particles D. pressure

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