When an atom gains electrons the anion formed is

A. smaller than its parent atom

B. larger than its parent atom

C. the same size as its parent atom

D. Twice the size of its parents

At the bottom of a hill, the kinetic energy of the cars should be equal to the potential energy of the car at the top of the hill. Are the kinetic energy values for group A and group B equal to, less than, or greater than the potential energy value?

How many atoms are in a sample of chromium with a mass of 13 grams?

When using the benedict's assay, which color would indicate the most reducing sugar present?

Three different atoms or atomic cations with 4 electrons

A reaction has a standard free-energy change of - 10.70 kj mol-1 (-2.557 kcal mol-1). calculate the equilibrium constant for the reaction at 25 °c.

Which statements describe abiotic factors in an environment?

A ball rolling across the ground in Death Valley will slow and eventually stop. Why? - the ball's kinetic energy evaporates. - the ball's force is destroyed. - the friction of the ball changed the force to negative ions.

Calculate ∆h0 for the following reaction. br2 ( g. → br2 (l) ∆hf0 br2 ( g. = 30.91 kj/mol; ∆hf0 br2 (l) = 0 kj/mol)

Ethyl alcohol has a latent heat of vaporization of 850 J/g. Water has a latent heat of vaporization of 2260 J/g. Container A contains 1.0 kg of ethyl alcohol. Container B contains 1.0 kg of water. Both liquids are brought to a boil.

The greatest composition by mass in an atom 17/8 O is due to the total mass of its