Reactioneaza total 22 kg calcar de puritate 80 % cu o solutie de acid clorhidric de concentratie 30 %. Stiind ca rezulta clorura de calciu, apa si dioxid de carbon, se cer: a. ecuatia reactiei chimice;
b. masa de solutie de acid clorhidric stoechiometric necesara;
c. masa de clorura de calciu rezultata;
d. cantitatea/numarul de moli de apa.

De la Alex;)(da alex ăla de e din cls cu tn:)

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.