¿Cuántos gramos de helio (4.003 g/mol) hay en un globo que contiene 8.50 L del gas a una temperatura de 20 °C y a una presión de 800 torr? (8
puntos; 1 punto datos, 1 punto fórmula, 4 puntos procedimiento, 1 punto
resultado, 1 punto unidades) *

you should just be yourself and not let any body tell you other wise.

explanation:

why?

because if they don't love you for your self then they don't deserve you.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.