A new element R shows chemical properties similar to the element sodium. What is the correct formula of a compound formed with R and sulfur? R₂S
RS₂
RS
R₂S₂​

At stp, what is the volume of 1 mole of co2?

Summarize possible ways in which phases of matter could combine to form a solution.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.