What is the mass of 18.8 moles of helium (he) atoms? 0.213 g 4.70 g 37.6 g 75.2 g

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space