How many grams of co2 is produced when oxygen reacts with carbon?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Is this correct if not can u correct me

Condensation happens when water vapor cools. true or false? ?