Answer:
A or D should be the answer
6x10-3M that will be your answer muh friend yes i know i know im big brain
An example of an exothermic reaction will be formation of ice
68000 = 6.8 * 10000 = 6.8 * 10^4
hope this helps? c;
2nd one bhutdsaadxjytwwdghurfc