What is the rate for the second order reaction A → Products when [A] = 0.315 M? (k = 0.761 M⁻¹s⁻¹)

100mg magnesium reacts with 20ml of 1.0m hcl

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

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.