Which statement accurately describes test tubes and beakers? A. Beakers and test tubes both have rounded bottoms.

B. Test tubes are better for transferring liquids than beakers.

C. Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.

D. Beakers can be held over a flame; test tubes cannot.

Is powdered sports drink ionic or covalent ? 10pts !

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.