How do you write a balanced chemical equation for the reaction of sulfuric acid with magnesium nitrate to form magnesium sulfate and nitric acid

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.

Building glycogen from glucose molecules is an example of

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?