What is the mass of 12.5 moles of Ca3(PO40)2?

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Why did southern business leaders want to increase the number of slaves