Melting point = 63.3 °C Boiling Point = 775.8 °C Specific heat (solid) = 0.816 J/g °C Specific heat (liquid) = 4.4 J/g °C ΔHfus = 0.965 J/g ΔHvap = 6.4 J/g. Calculate the TOTAL amount of energy required to heat 31.8 grams of the substance from 11.2 °C to 446 °

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

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?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled