Acertain atom has an atomic number of four. how many protons does it have?

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

Which of the following represents a negatively charged ion? of t 7

What's the waste product of electrons and pyruvate combining in fermentation?