A chemist is studying an unknown substance. He can break it into its elemental components only by using chemical means
Based on this observation, how should the unknown substance be classified?
A impure substance
B Solution
C mixture
D pure substance

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

What is the lowest number energy level where a d sublevel is found

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.