9) The temperature at which a substance in the liquid state freezes is the same as the temperature at which the substance-
a. Melts b. Sublimes
c. Boils
d. Condenses

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

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.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer