If all people were pea pickers, then how long would it take for the entire population of Earth to pick 2 mol of peas at the rate of 3 pea per second, working 40-hour workweek for 52 weeks a year? (to 3 sig figs)

The rules of engagement (roe) working group is often used to (select all that apply.)

Ineed to find the answer of this question because i dont understand it

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.