Hòa tan m(g) hỗn hợp X gồm Na, BaO tỷ lệ mol 1 : 2 tương ứng vào 250 ml dung dịch H2SO4 0,55M thu được kết tủa và dung dịch Y có pH = 13. Cô cạn Y thu được m2 gam chất rắn khan. Tính m1, m2?

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

The clouds are grey and ground is wet. a quantitative b qualitative

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.