In a concave mirror, if an object is located beyond the center of curvature, what is the best description of the image formed? (a) real, inverted, and at the same point as the object (b) real, inverted, and larger than the object (c) light rays travel parallel to each other, no image formed (d) real, inverted, and smaller than the object

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Find the mass in grams of 1.37x1020 particles of h3po4