0.269 g of solid sodium hydroxide is placed in a 250-mL volumetric flask. Water is added to dissolve the solid and fill the flask exactly to the mark. What is the molarity of the resulting solution

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.

Which statement can best be concluded from the ideal gas law?

Which of the following describes a situation where competition between producers exists