22. Calculate the average deviation and the standard deviation from the following measurements: 4.012 g; 4.022 g; 4.019 g; 4.027 g; 4.018 g; 4.024g

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

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.