The electron configuration of an element is 1s^ 2 2s^ 2 2p^ 2 How many valence electrons does the clement have? (1 point )

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

What if it is did darwin used to support his theory of evolution

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients