In an investigation,
the volume of a
material is measured
as 80.0 cm3 and its
mass is measured
as 253 g.
Which
calculation of density
correctly uses the
precision rules:
3.1625 g/cm3,
3.163 g/cm3,
3.16 g/cm3,
3.2 g/cm3,
or 3 g/cm3?

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.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted