How many bonding electrons are present in PO43-?

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