50 mL of water (density = 1.00 g/mL) are added to 50 mL of alcohol (density = 0.80 g/mL), producing a mixture with a volume of 95 mL. What can be said about the density of the mixture? t must equal the average density of the two liquids.

It must be greater than the average density of the two liquids.

It must be smaller than the average density of the two liquids.

none of the above

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

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.