The scientist imagines what a very small piece of sample A would look like if she could see its atoms. She includes 20 copper atoms in the model she draws of this very small piece of sample A. If you were to draw a model of the particles (atoms) in a very small piece of sample B, that was the same size as the very small piece from sample A and at the same temperature: what would be the same and what would be different in your model? Mark the correct answer for each feature.​

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.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

The grooves or folds of the brain are called