How many liters of oxygen are liberated when 39.2 grams of barium chlorate are heated to produce barium chloride and oxygen gas?

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

Name the element in group 17, period 2. (periodic table)

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.