Which metal in period 5 is very reactive and has two valence electrons in each atom?
rubidium (rd)
strontium (si)
zirconium (z1)
silver (ag)

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

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

What is the relationship of air masses and the temperature of oceans?