Write 4 chemical equations with the product and reactant. (if you know only 1 or 2 just write it)

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

In which situation can a mixture always be called a solution

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.