Answer:
A substance that is composed only of atoms having the same atomic number is ... 36 grams of an unknown liquid at its boiling point,.
Sulfur and chlorine. Explanation: A covalent bond is formed by two non-metals with similar electronegativities. As a consequence, they share one or more pairs of electrons between their nuclei
B.
Explanation:
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<span>Binuk, Drew, Henry, Liz Scientists who contributed in the Atomic Theory Robert Andrews Millikan James Chadwick
Used an oil-drop experiment to measure the charge of the electron,
allowing them then to be able to calculate the mass of the electron.</span>
40.0 is the answer, sorry, I had some lag, I would've answered it like 5 minutes ago
Hope I helped