8. Why don't hydroxide ions appear in equations for half-reactions occurring in acidic solution? Help plz. No links

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

150.0 grams of asf3 were reacted with 180.0 g of ccl4 to produce ascl3 and ccl2f2. if the actual yield of ccl2f2 was 127 g, what is the percent yield?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.