A0.450 g sample of impure caco 3 ( s ) is dissolved in 50.0 ml of 0.150 m hcl ( aq ) . the equation for the reaction is caco 3 ( s ) + 2 hcl ( aq ) ⟶ cacl 2 ( aq ) + h 2 o ( l ) + co 2 ( g ) the excess hcl ( aq ) is titrated by 6.45 ml of 0.125 m naoh ( aq ) . calculate the mass percentage of caco 3 ( s ) in the sample.

1 a

2 d

3 a

4 c

explanation:

answer7,570,82356 cubic centimeters;

the objects have the same charge is correct.

nathan lee

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.