The activation energy of an endothermic reaction must be greater than the required δh.
true
false

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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