41. Physical and chemical properties are listed below. 1. malleable 2. brittle 3. highly combustible 4. has free electrons Which two of these properties apply to most elements that conduct heat?

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.