What is the simplest whole number ratio of atoms in a molecule or formula unit called? the molecular formula the molar mass the percent composition the empirical formula

Structural strength and stability

Pure, 24k gold is very malleable. by mixing gold with other metals it becomes less malleable. in what situations would you want to use gold that is not as malleable?

Why is methane, CH4, a nonpolar compound? It does not have covalent bonds. Each covalent H bond is nonpolar. The nonpolar bonds are distributed evenly around the carbon atom. It forms a symmetrical planar triangle.

How many moles of calcium are there in 5.74 x 1022 atoms of calcium?

Changes in activation energy during a chemical reaction are represented by a

A 275-mL f lask contains pure helium at a pressure of 752 torr. A second f lask with a volume of 475 mL contains pure argon at a pressure of 722 torr.

The temperature of 6.24 l of a gas is increased from 25.0°c to 55.0°c at constant pressure. the new volume of the gas is

Which of the following statements regarding pH is true? Which of the following statements regarding pH is true? A pH of 10 is acidic, and a pH of 3 is alkaline. Buffers accelerate large changes in the pH of a solution.

How to find thr solute and solvent

Which process uses a volume of solution of known concentration to determine the concentration of another solution? (1) distillation (3) transmutation (2) substitution (4) titration