The symbols for elements with atomic numbers 4, 9, 16, & 17 are? (Respectively)

How to convert a density of 0.791g/cm3 to lb/ft3

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6