Which of the following correctly identifies the element with the lower rst ionization energy provides the best justification?
Choose 1
Kr, because of its lower nuclear charge
Kr, because of its smaller valence orbitals
Xe, because of its larger atomic radius
Xe, because of its completely filled valence shell

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

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.