Asolution contains: ba2+ (1.0 × 10‒3 m), ca2+ (1.0 × 10‒3 m) and k+(1.0 × 10‒3 m) ions . drops of naf solution were added with a buret until the [f-] in the solution mix reached 3.0 × 10-3 m. should a precipitate form? if so, what is the precipitate? the kspvalues are baf2: 1.0 × 10‒6, caf2: 5.3 × 10‒9. (neglect the slight change in volume resulting from the added naf solution.)

it is called acid bonding

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

c. orbital shape i hope this is correct