Asample of a substance has these characteristics:
• melting point or 9811 k
• hard. brittle solid at room temperature
• poor conductor of heat and electricity as a solid
• good conductor of electricity as a liquid or in an aqueous solution
this sample is classified as
(1) a metallic element
(2) a radioactive element
(3) a molecular compound
(4) an ionic compound

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

How does a hydroelectric power plant converts energy into energy.

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles