A gas with a volume of 7.49 L is allowed to expand until the volume raises to 81 L with a pressure of 1.9 atm. What was the original pressure (in atm)?

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?