The answer is the third one because the animal died before the rock was there
Hello,
You balanced the equation and then you have to set up what is called a psychometric equation for each reactant so that you get the same unit for each in order to compare the two. so for (calcium hydroxide) = 78.5 g ÷ (40.1 + 32 + 2) = 1.0593 mol * Note: I just broke it down in my own science way..u can just get the molar mass of calcium hydroxide which is approx 74 g/mol
Hope this helps
Put in the values into density formula, convert cm^3 to ft^3 and write final solution.
Since the chemical definition of "stable" means close to having a full valence shell, the answer is 3d^10.