use the periodic table to identify an element is by looking for the element's name or elemental symbol.
Answer:
121.63 g/mol
Explanation:
Sr(OH) 2 = Strontium Hydroxide
Polaris the north star is very bright and it doesn’t move
The answer would be Force
<span>This could be because no deposition took place or there was a long period of erosion that took away these layers of rocks. A lack of deposition would lead to a large gap in the rock strata, while a long period of erosion would have taken away whatever rocks had existed, leaving what would look like a gap that didn't have any rocks existing.</span>