The ΔE of a system that absorbs 12.4 J of heat and does 4.2 J of work on the surroundings is ________ SHOW WORK FOR THIS QUESTION

The net ionic equation for the formation of an aqueous solution of NiI2 accompanied by the evolution of CO2 gas via mixing solid NiCO3 and aqueous hydroiodic acid is ________.

Of the following transitions in the Bohr hydrogen atom, the ________ transition results in the emission of the lowest-energy photon.

Given the data in the table below, ΔH°rxn for the reaction            2Ag2S (s) + O2 (g) → 2Ag2O (s)  + 2S (s)  is ________ kJ. SHOW YOUR WORK FOR THIS QUESTION                                                      

Which solution has the same number of moles of HCl as 25.0 mL of 0.200 M solution of HCl? YOU MUST SHOW WORK FOR THIS QUESTION

Which is the correct electron configuration for an oxide ion?

What is the energy of a photon (J) that has a wavelength of 105 nm? SHOW WORK FOR THIS QUESTION

Exposure to substances like lead, nicotine, alcohol, and opioids can cause birth defects during prenatal development. These substances are know as _________.

Self-efficacy (according to Albert Bandura) is:  

(Measuring personality)  A projective test is a type of personality test that: