I need help with these 3 questions quickly. I'll mark your answer brainliest and give you a lot of points.

For #15 my answer from #12 is 80kJ

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Can someone check my work 98 5.05 acids and bases for this assignment you will be comparing acids and bases. the chart below will you organize the information needed: acids bases chemical properties (2) deodorant detergent vinger dish soap physical properties (2) orange juice toilet cleaner drain cleaner window cleaner ph level acid ph goes from 0-4 bases ph goes from 10-14 examples around you (2) vinger coffee lemon juice dark chocolate