A Un tren viaja a una velocidad de 700 mls. en 7 segundos aumenta su velocidad a 900 mis en contrar
la aceleración y el espacio recorrido en los primeros
5 Segundos.
avevo
a = Vf-vo X= Vott at?
2

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds