Which element would you find in group 2 that has 3 electron shells? calcium
strontium
magnesium
aluminum

What is the ph of a solution with a concentration of 5.2 × 10–8 m h3o+?

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

How much energy moves onto the next level, in an energy pyramid