Answer: the empirical formula is C3H4O3
Explanation:Please see attachment for explanation
You have a few steps to solve this one. First, we'll find the molar mass by percentage of each element in the molecule. Then, we'll divide each of those relative masses by the atomic mass of each element. The number of times the mass divides into the relative mass is the number of atoms of that element in the molecule:
C: 284.5 x .76 = 216.22
H: 284.5 x .128= 36.416
O: 284.5 x .112 = 31.864.
Now we divide out each element's atomic mass (from the periodic table). it's okay if they're approximated from the decimal answer.
C: 216.22 ÷ 12.011 ≈ 18
H: 36.416 ÷ 1.008 ≈36
O: 31.864 ÷ 15.999 ≈ 2
Therefore, the molecular formula is C18H36O2.
The empirical formula would be found by dividing out all factors of those subscript numbers. In our case, all of them can be divided by 2. The empirical formula would be C9H18O
For the basic solution:
11.2 = -log[H+]
[H+] = 6.31 x 10⁻¹²
For the acidic solution:
2.4 = -log[H+]
[H+] = 3.98 x 10⁻³
The difference:
3.98 x 10⁻³ - 6.31 x 10⁻¹²
≈ 4.0 x 10⁻³
The answer is B
The tertiary structure of a protein includes all of the following interactions except p<span>eptide</span> bonds.
-Hope this helps.
Lake Minnetonka in Southern Minneosta is buffer solution
Explanation:
One can conclude from the observation that Lake Minnetonka is a buffer solution. A buffer solution is a special solution that resist changes in pH or pOH when a small amount of an acid or base is added.
- Buffers are solutions in equilibrium with a fairly constant pH.
- They are aqueous solutions containing weak acids and their salts or weak bases and their salts.
- Since the pH of water sample from Lake Minnetonka did not change, it is a buffer.
Learn more:
buffer brainly.com/question/4431162
blood as a buffer brainly.com/question/12855542
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