A substance has a mass of 100 g and a volume of 10 mL. What is the density of the substance? *
0 0.05 g/mL
0 2.0 g/mL
0 10 g/mL
0 20 g/mL

Which of these will change if the air in aclosed bottle is heated? abcdthe mass of the airthe composition of the airthe air pressure in the bottlethe number of air molecules in the bottle

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.

Air can be considered a mixture. which statement does not explain why?