Which of the five main chemistry disciplines is most closely related to each of the actions described below? Studying the digestion of certain types of foods

Investigating the iron content of different samples of ore
Measuring how much energy is released in a series of reactions
Attempting to produce a new carbon-based chemical
Measuring the amount of mercury contamination in a sample of river water

How many molecules are in 6.0 moles of methane

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

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him