How do scientists know how old ice cores are? A. The bubbles in the core

B. The taste of the core

C. The look of the core

D. All of the above

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Define a is a tiny pavket of energy