What is the total number of electrons in a s2– ion?
(1) 10 (3) 16
(2) 14 (4) 18

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.