Sodium metal forms at the cathode
Answer:
Compared to other stars we observe, the Sun appears bigger and brighter because it is much closer to earth.
Objects closer to earth appear to be much bigger and brighter.
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Answer: A, C, E
Explanation: PLATO. all testable questions.
Answer:
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Answer:
Such molecule must have molecular formula of C15N3H15
Explanation:
Mass of carbon in such molecule

The atomic mass of carbon is 12.01 g/mol, so in 182.28 g of carbon there is 15.18 mols of carbon.
Mass of Nitrogen in such molecule

The atomic mass of nitrogen is 14.01 g/mol, so in 42.53g of nitrogen there is 3.04 mols of nitrogen.
Mass of Hydrogen in such molecule

The atomic mass of Hydrogen is 1.00 g/mol, so in 15.19 g of Hydrogen there is 15.19 mols of Hydrogen.
Such molecule must have molecular formula of C15N3H15