Does the following atomic model of a chemical reaction correctly demonstrate the law conservation of matter why or why not plz help

How many atoms of oxygen are contained in 160 grams of n2o3

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use