Se ponen a reaccionar 105 g de una muestra impura de Cu con 87% de pureza, Calcular cuántos gramos de producen de Cu(NO3)2 Cus+HNO3 (ac)→Cu(NO3)2 (ac)+NO(g)+H2O(l)

4- c, because all matter stays the same no matter what. it is still there. 5- b, because matter is known as mass. 6-c because, flammability is a chemical property. malleability is changing the shape of an object.