Name three common lubricants and describe why they are used.

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

The time that is taken by neptune once around the sun is called

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.