1 Афun
простите им вещества.
Въглерода, Bogopoga, kaлция, натрия и хлора и означенията на
ЗАДАЧА 1) Запишете химичните знаци на азота, кислорода,

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

the objects have the same charge is correct.

nathan lee