Which of the following quantities will always be the same before and after a chemical reaction? Circle all correct answers a. The total number of atoms b. The total number of molecules c. The total number of different elements d. The total number of atoms of each element e. The total mass of each element f. The total mass of each substance g. The total mass of all substances h. The total volume occupied by all substances i. The total volume occupied by each element j. The total number of protons k. The total number of neutrons l. The total number of electrons m. The total number of protons of each elemen

Read the question carefully and encircle the letter of the correctanswer.Which statement is NOT true for the Law of Conservation of Mass?a. The total mass of the reactants is equal to the total mass of the products.b. The total mass of the products is equal to the mass of the reactantsc. Grouping and regrouping/rearrangement of atomsd. No new atoms are created or destroyed

Can the mass of one mole of sample A be the same as the mass of one mole of sample B? Explain your answer.

Use the information given to you  below to solve/calcualte the rest of the table. Please show all work on how you reached your answers.  Formula of Hydrate: CuSo4*5H2O Weight of Hydrate and Evaporating Dish: 63.961 g Weight of Empty Evaporating Dish: 54.020 g Weight of Hydrate: ? Weight of Sample and Evaporating Dish after 1st Heating: 60.435 g  Weight of Sample and Evaporating Dish after 2nd Heating: 60.381 g Weight of Sample and Evaporating Dish after 3rd heating: 60.381 g Weight of Anydride and Evaporating Dish: 60.381 g Weight of Water lost: ? Weight of Anhydride: ? Experimental Percent Water: ?  Theoretical Percent Water: ?  Percent Error: ? Moles of Water: ? Moles of Anhydride: ? Ratio of Moles of Water to Molves of Anhydride: ? Experimental Formule of Hydrate: ? Please show all work on how you came to each answer. Thank you!

11 12 13 14 15 16 17 18 19 Any units will do. For example, let's use the unit of "dozens": 2 dozen of H2 particles + v dozen of O2 particles - dozen water particles NEXT QUESTION O ASK FOR HELP 20

9. Na Cro, # of molecules: # of elements: Name of element # of atoms Total # of atoms: The #4 is a (coefficient or subscript) 10. 4AI,(CO), # of molecules: # of elements. Name of element: # of atoms Total # of atoms: The assumed 1 is a (coefficient or subscript)

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