Which of the following describes a nonspontaneous reaction? A. The Gibbs free energy is more than the activation energy.
B. The Gibbs free energy is less than the activation energy.
C. The Gibbs free energy for the reaction is positive.
D. The reaction does not need added energy to occur.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj