The specific heats of two natural substances are shown in the table.
-
Specific Heat
Natural Substance Specific Heat
Granite
0.79 J/g °C
0.44 J/g °C
Nickel
A slab of granite and a slab of nickel are placed next to each other on a sunny day.
If the temperature of each slab is initially equal, which substance is likely to show a lower
temperature after a few minutes and why?

We can't until we know what we are working with or on

Answer/when the cell uses energy;

  the volume of  0.220 m k2s    solution  required  to  completely  react with 175 ml  of 0.115m co(no3)2  calculate the moles  of co(no3)2 =  molarity x volume/1000175 x0.115/1000= 0.02  moleswrite  the reacting  equationk2s(aq)  +  co(no3)2  = 2 kno3(aq)  + cos(s)by  use  of mole ratio between k2s to co(no3)2 which  is  1: 1 the moles of k2s is therefore = 175  x0.115/1000= 0.02  molesvolume = moles/molarity=0.02/0.22=0.09  ml  of k2s