2 1r + NizPz - 3 Ni + 2 Irp How much (grams) iridium will react with 1.90 mol of nickel (11) phosphide?
Show work using dimensional analysis. Use units and rounding for sig figs.​

What is the mass of 8 moles of sodium atoms

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.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?