Fill in the blank with the correct number to balance the equation: → 2kcl + 3o2. (enter only a whole number.)

Answer is "2"

Explanation:

In the decomposition of potassium chlorate (KClO₃) we get KCl and oxygen gas.

Each mole of KClO₃ gives one mole of KCl and 1.5 moles of O₂ gas.

So the reaction will be:

In order to convert the fractional coefficient to whole number we will multiply the complete equation with two.

Thus the balanced equation will be:

hence coefficient of KClO₃ is "2".

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

can i get the brainiest answer

i answered it first