Which of the following is not the same as 105.6 milligrams?

a- 0.0001056kg
b-0.001056 dkg
c- 0.1056 g

The answer is B. 1 dekagram (dkg) = 10 grams. Therefore, 105.6 milligrams = 0.01056 dkg. This is deduced by first converting the milligrams to grams; 105.6/1000 = 0.1056 g;

Then convert to dkg; 0.1056g/10 = 0.01056dkg

The other SI units;

1000 millligrams = 1 gram

1000000 milligrams = 1 kg

(3) NaNO₃

Step-by-step explanation:

Sodium nitrate has ionic bonds, because it consists of Na⁺ and NO₃⁻ ions.

However, the nitrate ions have covalent bonds between the O atoms and the central N atoms.

(1) and (2) are wrong. Both N₂O₅ and HCl consist of nonmetals, so they are covalent compounds.

(4) is wrong. NaCl has only ionic bonds between the Na⁺ and Cl⁻ ions