Equation given: 2AgNO3 + BaCl2 —> 2AgCl + Ba(NO3)2

2. If 57 g BaCl, is reacted, what mass of AgNO3 is needed?

3. If 125 moles of AgNO3 is reacted, how many grams of AgCl will be produced?

Solar thermal energy and solar electric energy

Most elements have more than one naturally occurring isotope. as you learned previously, the atoms of those isotopes have the same atomic number (number of protons), making them belong to the same element, but they have different mass numbers (total number of protons and neutrons) giving them different atomic masses. so which mass is put on the periodic table for each element? is it the most common isotope’s mass? the heaviest mass? this activity will answer that question.