Nucleic acids are hydrocarbons that also contain nitrogen, phosphorus and oxygen elements.
Hydrocarbons are long chains of carbon that have additional bonds exclusively with hydrogen atoms. They are hydrophobic, or not soluble in water. Nucleic acids are macromolecules that are made of units called nucleotides, they are mainly in two forms; the RNA and and the DNA. Both the RNA and DNA have a pentose sugar, a phosphate, and a nitrogen containing base.
Answer:
b. The solvent being used in the experiment.
Explanation:
The spectrophotometer indicates the absorption of the light for the substance. So, during the experiment, is necessary to put the solvent first, so the equipment will discount the absorption of it, and then, with the samples, will indicate the absorption of the solute.
There are 1.204 x 10¹⁹ atoms O
<h3>Further explanation </h3>
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
1 mol of molecule Na₂C₂O₄ :
There are 4 mol of O in 1 mol of molecule Na₂C₂O₄
So for 5 x 10⁻⁶ mol Na₂C₂O₄ :
1 mole = 6.02.10²³ particles , so number of atoms O :
