Express the rate of reaction in terms of the change in concentration of each of the reactants and products. 2A (g) → B (g) + C (g)

Define a polyatomic ion?

What does the number above the symbol represent? O A. The isotope number O B. The atomic mass O C. The atomic number O D. The ionic number

What characteristic of radiation allows a geiger counter to measure radiation levels?

How can you use qualitative properties to identify a gas sample? A. Line spectra B. Flame test

Write the formula for compound formed between pb^2+O^2

What is the molar mass, in grams, of a mole of an element equal to? O A. the number of electrons in the element O B. the atomic weight of the element OC. the atomic number of the element OD. the number of neutrons in the element

What substance is not a compound

Consider the following exothermic reaction and predict how the change below will affect the concentration (increase, decrease, stay the same) of each component in the system as the equilibrium is reestablished.

How does the electron structure of atoms change when they form chemical bonds

What is the scientific notation for 1073