PLEASE IM BEGGING YOU IF YOU ANSWER MY RECENT QUESTION WILL MARK BRAINLIST! I NEED HELP it's DUE TODAY I HATE CHEMISTRY

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.