How many moles of carbon (C) are there in 92.5 g of C?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

How can one make a supersaturated solution? (apex)

What kind of intermolecular forces act between a hydrogen fluoride molecule and a hydrogen peroxide molecule? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.