Can you me with #7? #7 says "a substance enters into and is altered through the course of a chemical change. it is called a " pick one of these choices. the lines that are next to the words are already picked from #s 1, 2, 3, 4, 5,& 6. do not pick more than one answer pick one answer only. tap the image so you could see the full image. (what i'm talking about is science.)

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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.