Solution:
The calculation is:
6.28 * 10^13 + 9.30 * 10^11
6.28 * 10^2 * 10^11 + 9.30 * 10^11
(628 + 9.30) * 10^11
637.3 * 10^11
Answer:
the NaCl is not considered a molecula
Explanation:
Sodium atoms, (Na +) and chlorine atoms, (Cl-) form a three-dimensional network. The cations and the anions are joined together by electrostatic attraction which we call ionic bonding
Molecules are atoms bound with chemical bond.
Answer:The number of atoms in 2.0 mole Al is A. 2.0 Al atoms. B. 3.0 x 1023 Al atoms.
Secondly, is aluminum an atom or molecule? Aluminum is the second element in the thirteenth column of the periodic table. It is classified as a post-transition metal and a "poor metal". Aluminum atoms contain 13 electrons and 13 protons. There are 3 valence electrons in the outer shell.
The last step (step 5) in the experiment is to write a conclusion for the experiment. (Option B).
<h3>What is an experiment?</h3>
The essence of an experiment is to be able to establish a cause and effect relationship. It is only when we carry out a carefully controlled experiment that we can say that x causes y because the data would support our findings.
After, we have carried out an experiment, the next step is to put the evidences together and then try to arrive at a logical conclusion for the experimental procedure.
Thus the last step (step 5) in the experiment is to write a conclusion for the experiment. (Option B).
Learn more about experiment:brainly.com/question/11256472
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Answer:
Silicon has a very high melting point due to its giant covalent structure; a lot of energy is needed to break the strong covalent bonds throughout the structure.
Explanation:
