A sample of gas is stored in a cylinder. If the temperature is kept constant and the piston moves up to increase the volume what happens to the pressure?

How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Show all of the work needed to solve this problem. Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)

Which of these could be a physical change? A. Wood is burned in a fireplace. B. Cake batter is baked in an oven. C. A blue liquid and a yellow liquid mix and make a green liquid. D. Baking soda is mixed with vinegar to make carbon dioxide gas.

Use the drop-down menus to classify each of these substances, perfume fuel ether alcohol ester carboxylic acid anesthetic weak base weak acid

Which man made element is in an anomalous location

What is the pH of a solution if the [H⁺] = 4.2 x 10⁻¹¹ M

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