What is the proper nuclear symbol for the the isotope that has 47 protons, 61 neutrons, and 46 electrons?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Draw two cyclic constitutional isomers of cis-1