What is the average atomic mass of lithium?

The sum of the protons and neutrons in an atom is its

The concentration of a chemical degrades in water according to first-order kinetics. The degradation constant is 0.2 day-1. If the initial concentration is 100.0 mg · L-1, how many days are required for the con - centration to reach 0.14 mg · L-1?

Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the test tube was allowed to cool. A green powder was left in the tube.

What is the difference between a compound and a mixture?

Which trait is most likely a result of artificial selection

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda