Chemistry Conversions

Question

1. knowing that a proton weighs 1 mass unit and a neutron weighs one mass unit. write the 4 conversion factors you can derive from these equalities.
2. you know that a carbon atom contains 6 protond and 6 neutrons and therefore weighs (atleast on Earth!) 12 mass units. write the conversion factors that you can derive from this relationship
3. Use dimensional analysis to find the mass (weight on earth) of 1563 atoms of carbon

Answer 1

1.) 1 mass unit / proton; 1 proton / 1 mass unit; 1 mass unit / neutron; 1 neutron / 1 mass unit

2.) 6 protons / C atom; 6 neutrons / C atom; 1 C atom / 6 protons; 1 C atom / 6 neutrons;

1 C atoms / 12 mass units

3.) 1563 C atoms x 12 mass units / C atom = 18,756 mass units