How many atoms are in 0.500mol of calcium?

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Which answer lists the fundamental forces in order from strongest to weakest

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process