To 1.00 l of water was added 2.00 g of solid barium carbonate, baco3. after stirring, it was found that the solid did not dissolve completely.
a) calculate which mass of baco3 has dissolved.
b) check that at ph = 4 the added mass of barium carbonate would dissolve completely.
data: pkps (baco3) = 8.3; pka1 (h2co3) = 6.35; pka2 (h2co3) = 10.33; mr(ba) = 137.3; mr(c) = 12.0; mr(o) = 16.0

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

it's c (engineer's do their work with mechanical stuff not on any living being)

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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the objects have the same charge is correct.

nathan lee