For a project, I have to design a device that converts energy and is useful for people. For example, wind turbines, light bulbs, and windmills. I have some ideas but I feel like they aren't that great. Got any ideas?

Which compound contain an iron with a 3+ charge

What does it mean for something to be dissolved in watera- it is submerged in water moleculesb-it is stirred in the water moleculesc- it is surrounded by water molecules d-it has water molecules added to it

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.