Give the word and chemical equations (including state symbols) for the reaction of potassium and water

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?

Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer