Given the balanced equation representing a reaction:
cao(s) + co2(g) ==> caco3(s) + heat
what is the total mass of cao(s) that reacts completely with 88 grams of co2(g) to produce 200. grams of caco3(s)?
(1) 56 g (3) 112 g
(2) 88 g (4) 288 g

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

How can the periodic table be used to predict the behavior of elements?