How many moles of CoCl3 are in 172.6 ml of a 19.6 mass % solution of CoCl3 which has a density of 1.206 g/ml?

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

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