Answer:A+B - AB
Element a reaction with element b to create the newest element ab
Answer:
I think its D
Explanation:
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Answer: There are four atoms
Explanation: mass of Cl atom is 35.45 amu
Amount of atoms n = m/M = 142 / 35.45 = 4
10, deca means ten a decagon is a ten side polygon, a decimetre is one tenth of a metre a decade is ten years so your answer is ten.