7. a 5.0 g piece of metal is heated to 100°c, then placed in a beaker containing 20.0 g of water at 10°c.
the temperature of the water rises to 15°c. assuming that heat lost by the metal = heat gained by the
water. calculate the specific heat of the metal.

i think 4.44 moles

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)