Mixing chemicals in a cold pack creates a reaction that: absorbs heat
destroys heat
releases cold
none of the above

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold