Knowing the unit rate of knots to miles per hour, what would the wind speed be in miles per hour (mph) if the wind was measured at 12 knots?

idk

explanation:

i need the pts ignore this answer

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

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

it is stable as it is in group 0 which have full outer shells of electrons