Select the elements having identical dot notations (the
same number of valence electrons)
selenium, se, atomic #34
phosphorus, p, atomic #15
arsenic, as, atomic #33
nitrogen, n, atomic #7
carbon, c. atomic #6
chlorine, cl, atomic #17

Which statement is best described as a atom

Heat is the total potential energy of a substance that can be transferred. true false

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?