If an atom gains some extra electrons so that its valence shell becomes full, what happens to the atom?

a. it becomes less stable.

b. it becomes more stable.

c. its charge becomes neutral.

d. nothing. it just has more electrons now.

At 350 k, kc = 0.142 for the reaction 2 brcl (g) ⇀↽ br2 (g) + cl2 (g) an equilibrium mixture at this temperature contains equal concentrations of bromine and chlorine, 0.043 mol/l. what is the equilibrium concentration of brcl? answer in units of m.

What is the purpose of the inert electrode? A. to create a solution of anions B. to create a solution of cations C. to conduct electrons D. to conduct protons

A chemical reaction has reached equilibrium when

The density of gold is 19.3 g/cm3. What is the volume of a 13 g gold nugget?

A compound is composed of only C, H, and O. The combustion of a. 519-g sample of the compound yields 1.24 g of CO_2 and. 255 g of H_2O. What is the empirical formula of the compound?

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way

Element m has an ellectronegativity of less than 1.2 and reacts with bromine to form the compound MBr2. Element M could be?

Which situation describes evidence of a chemical change? A. When food color is added to water, it changes color. B. A solid changes into liquid when heated. C. A solution feels warm after a cool solid is added to it. D.