<span>Sugar's carbon molecules can be arranged in a straight chain, a branched chain, or a ring.</span>
Answer:
The empirical formula is PbC₈H₂₀
Explanation:
To determine the empyrical formula, we need to determine the % of each element:
(38.43g / 60 g ). 100 = 64.05 % of Lead
(17.83 g / 60 g) . 100 = 29.72 % of Carbon
(3.74 g / 60 g) . 100 = 6.23 % of H
Now we divide by the atomic mass:
64.05 / 207.2 = 0.309
29.72 / 12 = 2.48
6.23 / 1 = 6.23
We pick the lowest value and we divide again, with this number
0.309 / 0.309 = 1 Pb
2.48 / 0.309 = 8 C
6.23 / 0.309 = 20 H
PbC₈H₂₀
Answer: Molar concentration of the tree sap have to be 0.783 M
Explanation:
To calculate the concentration of solute, we use the equation for osmotic pressure, which is:
where,
= osmotic pressure of the solution = 19.6 atm
i = Van't hoff factor = 1 (for non-electrolytes)
R = Gas constant =
T = temperature of the solution =
Putting values in above equation, we get:
Thus the molar concentration of the tree sap have to be 0.783 M to achieve this pressure on a day when the temperature is 32°C
Answer:
A chain of four carbon atoms connected by single bonds. Single bonds connect the first carbon atom to 3 hydrogen atoms. The second and third carbons are each connected to 2 hydrogen atoms by single bonds. The fourth carbon atom is double bonded to 1 oxygen atom and single bonded to 1 oxygen atom. The single bonded oxygen atom is connected to a hydrogen atom by a single bond. Both oxygen atoms have 2 lone pairs.
Explanation:
In the Brownstead-Lowry definition of a base; a base is any substance that accepts a proton. Hence, a base must have available lone pairs to accept a proton and possess a plus sign afterwards. Only the bonding situation described in the answer meets this description.
The description in the second option should be a Brownstead-Lowry acid because it will rather donate a proton.