What is the number of molecules present in 2.50 mol H2S?

Who introduces the concept of atomic number?

What does the cell membrane let in an out

Describe an experiment to show that fake gold conducts electricity. State what apparatus you would need, what you would do and what you would see.

Which is the stronger acid in each of the following pairs? Explain your reasoning. a. Phenol or p-hydroxybenzaldehyde b. m-Cyanophenol or p-cyanophenol c. o-Fluorophenol or p-fluorophenol

What are the words that describe how matter changes state

What is the pH of a 5.4 x 10-3 M HCl solution? A. 2.3 B. 3.3 C. 3.7 D. 11.7

Explain how the four states of matter differ at the molecular level

Aluminum and iron (II) oxide combine to form iron and aluminum oxide.

What is typically displayed on the x-axis of a solubility curve? Select one of the options below as your answer: a. grams of solvent per 100 grams of water b. grams of solute per 100 grams of water c. the temperature of the solution d.

How many subunits make up the final quaternary shape of the potassium channel?