Which of the following elements belong to the s-block of the periodic table? alkali metals. noble gases. halogens. transition metals.

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

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

Gymnast always perform on padded mats. how does the mats protect the gymnast