What volume of oxygen (O2) gas is equal to 4.5 moles at STP (Standard Temperature and Pressure)?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.

How can a mixture of salt water be separated into salt and water