Brainliesttt !me : )

why is the reaction between potassium (k) and chlorine (cl) considered an oxidation-reduction reaction?

k(s) + cl2(g) → 2kcl(s)

chlorine reduces in size when it reacts with potassium.
chlorine takes electrons from potassium in the reaction.
potassium reduces in strength when it bonds with chlorine.
potassium takes chlorine's place in the reaction.

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)