Both salt and sugar have radically different properties (both ... known as table salt, is an ionic compound with the chemical formula NaCl, ...
Answer:
C) A mass of 750 g and a volume of 70 dL
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Explanation:
Hello,
In this case, for substantiating the substance having the lowest density we need to compute it in the same units for each case as shown below:

A) 
B) 
C) 
D) 
Therefore, the lowest density corresponds to C) A mass of 750 g and a volume of 70 dL
Regards.
Answer:
1) NaCl, 5)MgS
Explanation:
What makes something an Ionic Bond:
- Ionic bonds are generally between two oppositely charged ions. Usually salts are formed.
- A metal and nonmetal are also generally considered to be ionic.
- Electronegativity also plays a role in a difference of electronegativity of elements being greater than 2.0.
For 1) Na has a charge of 1+ and Cl has a charge of 1-. They both come together to form table salt. Their electronegativity is also larger than 2.0. Also Na is a metal and Cl ion is a nonmetal.
For 2) C and O are both nonmetals and are covalent bonds
For 3) Water is a polar covalent molecule because there is a electronegativity difference between H and O, but not great. H and O are also nonmetals.
For 4) While Fe is a metal and O is a nonmetal, their electronegativity difference is not greater than 2.0. This makes it polar covalent.
For 5) Mg is a metal and S is a nonmetal. They have a large electronegativity difference. Also Mg has a charge of 2+ while S has a charge of 2-.
Answer:
It will have 5 valence electrons as its in group 5.
The atom will gain as its closer to the full configuration 8.
The charge will be 3- as it will gain 3 electrons.
3-Methoxybenzaldehyde
4-Anisaldehyde
(I THINK THIS IS THE ANSWER IM NOT SURE)