Thomson's model of the atom was called the plum pudding model. He discovered electrons, so he placed them in the atoms. This was before the nucleus was discovered.
Now, the current model is an atom that contains a positively charged nucleus (with both protons and neutrons), and negatively charged orbitals with electrons.
Answer:
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Answer:
The formula unit for beryllium oxide is BeO
Explanation:Mark me as brainliest
Explanation:
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Äni Arko MA it is also called hypermetropia .
Answer : The amount of heat released would be, (3) 811.68 kcal
Explanation : Given,
Moles of carbon monoxide = 12.0 mole
Enthalpy change = -135.28 kcal
The given balanced chemical reaction is,

From the balanced chemical reaction we conclude that,
As, 2 moles of carbon monoxide react to release heat = 135.28 kcal
So, 12.0 moles of carbon monoxide react to release heat = 
Thus, the amount of heat released would be, 811.68 kcal