2K + MgBr2→ __2_KBr +
Mg
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If 79.01 grams of Mg are produced, how many moles of K were reacted?
O 6.6 moles K
O 1.6 mol K
O 39.5 mol K
O 3.3 mol K

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.