Why is it so easy to float in the dead sea

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true