What is the color of the mineral when it is in powdered form

Iknow the answer is a but i don't know why

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

No copying 15 pts how does a free-body diagram tell you about the net force on an object?