Answer:
Cohesive and adhesive forces.
further, we also have vander waal's forces of attraction
Chemical property because heat is not electrical.
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The answer is D because most stained glass is held together with lead. The process of this is called leading.
Answer: 1.414x10^24 molecules in 94.4g MgO
Explanation: molar mass MgO 40.204
molecules in 40.204 g MgO = avogadro number
molecules in 94.4 g MgO = (94.4/40.204)*avogadro number
(94.4/40.204)*6.02214076*10^23 = 14.14x10^23
