El carbonato de calcio, Cacos, se descompone a elevada temperatura en óxido de calcio, Cao, y dióxido de carbono, Co2
a) Escribe la ecuación química ajustada.
b) Calcula la masa de carbonato de calcio necesaria para
obtener 1000 kg de óxido de calcio.
c) Calcula el volumen de dióxido de carbono que se des-
prende en condiciones normales de presión y tempera-
tura, según el apartado anterior.

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

What is the percentage of hydrogen in nitrogen trihydride