Answer:
C₃H₄O₃
Explanation:
The empirical formula is the simplest whole-number ratio of atoms present in a molecule. To solve this question we must find the moles of CO2 = Moles of Carbon and moles of H2O = 1/2 moles H.
With the difference in masses of the atoms we can find the mass of ascorbic acid and its moles as follows:
<em>Moles CO2 = Moles C -Molar mass: 44.01g/mol-</em>
4.31g CO2 * (1mol / 44.01g) = 0.0979 moles C * (12.01g/mol) = 1.18g C
<em>Moles H2O -Molar mass: 18.01g/mol</em>
1.17g H2O * (1mol / 18.01g) = 0.0650 moles H2O * (2mol H / 1mol H2O) = 0.130 moles H = 0.13g H
<em>Moles O:</em>
Mass O: 2.87g-0.13g H - 1.18g C = 1.56g O
<em>Moles O:</em>
1.56g O * (1mol/16g) = 0.0975 moles O
Dividing each number of moles of atoms in the moles of Oxygen (The lower number of moles:
O/O = 0.0975 moles O/0.0975 moles O = 1
H/O = 0.130 moles H/ 0.0975 moles O = 1.333
C/O = 0.0979 moles C/ 0.0975 moles O = 1
As empirical formula requires whole-numbers we need to multiply this ratio 3 times:
O = 1*3 = 3
H = 1.333*3 = 4
C = 1*3 = 3
Empirical formula of ascorbic acid is:
<h3>C₃H₄O₃</h3>
Water solution is considered ice
The Earth, Mars or Jupiter should be denser than the Sun. Density is defined by mass and volume — components of object or matter. Although the sun is huge, it’s component is made up of mostly gas (hydrogen and helium). While Earth, though smaller than the Sun, contains heavier elements such as iron, sulfur, rocks, sediments, granite, basalt and water. Mars (composed of rocks and nutrients) and Jupiter (contains gases and compounds) as well are denser when compared to the Sun’s density. Referencing to our basic understanding of matter: solid and liquid should be heavier than gas.
The possible equation for the reaction that occurs when potassium hydroxide and nickel(II) bromide solutions are mixed was 2 KOH(aq)+NiBr₂(aq) → Ni(OH)₂(s)+2 KBr(aq).
The equation of the reaction between potassium hydroxide and nickel(II) bromide solutions when this two chemical are mixed are 2 KOH(aq)+NiBr₂(aq) → Ni(OH)₂(s)+2 KBr(aq).
Answer:
They would probably be equal L and D stereoisomers
Explanation:
All amino acid (except glycine) can occur in two isomeric forms called L- and D- forms, because of the possibility of forming two different enantiomers around the central carbon atom known as the chiral center. The two enantiomers, have identical physical and chemical properties, but their interactions with other chiral molecules may vary.
A carbon chiral center occcurs when the carbon is bonded to four different substituents. Glycine, has no enantiomers because it has two hydrogen atoms attached to the central carbon atom.
<em>When a compounds with chiral centers are synthesized in the laboratory randomly (in the absence of a directing template) left and right-handed molecules ( corresponding to L- and D- forms) of a compound will form in equal amounts known as a racemic mixture. This was the case when Louis Pasteur in 1848, investigated the crystalline sediment that accumulated in wine casks called paratartaric acid or racemic acid, a form of tartaric acid.</em>