which best describes how the scientists could explain their observations A. They thought that sediment washing in from the shore formed the ocean floor and continue to build from the store B. They thought that strong ocean waves pushed the younger rock material toward the middle of the ocean. C.they thought that wave erosion at the shore remove the younger rock layers that were on top of the older rock layers. D. They thought the young rocks formed at the mid ocean ridge and pushed the older rocks toward the shore

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3