An element needed in your diet is Magnesium . The three most common isotopes of Mg have a mass of 24, 25, and 26. Using your periodic table , predict which of these is the most common isotope, and explain your choice.

What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 l to 4.50 l? the initial temperature is 10.0°c and pressure is constant throughout the change. which equation should you use? t2= v2/v1 t1 what is the final temperature? ⇒ 849 k these are the answers.