Answer:
See explanation
Explanation:
The drug thalidomide with molecular formula C13H10N2O4 was widely prescribed by doctors for morning sickness in pregnant women in the 1960s.
The drug was sold as a racemic mixture (+)(R)-thalidomide and (-)(S)-thalidomide.
Unfortunately, only the (+)(R)-thalidomide exhibited the required effect while (-)(S)-thalidomide is a teratogen.
This goes a long way to underscore the importance of separation of enantiomers in drug production.
Therefore, all the teratogenic effects observed when using the drug thalidomide was actually as a result of the presence of (-)(S)-thalidomide, the unwanted enantiomer.
Answer: The answer to your question is OD
Hope this helps.
Answer:
Explanation:
Assume the chemical equation:
- Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
<u>1. Convert 112 liters of hydrogen gas at STP to number of moles.</u>
You can use the molar volume of a gas at STP equal to approximately 22.4 liters.
<u>2. Use the theoretical mole ratio</u>
From the balanced chemical equation, 1 mol of Zn produced 1 mol of H₂(g).
Thus, the mole ratio is 1 : 1, and 5 moles of Zn are needed to produce 5 moles of H₂(g).
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<u>3. Convert 5 moles of Zn to mass in grams</u>
- mass in grams = number of moles × atomic mass
- mass = 5 mol × 65.39g/mol = 326.95 g
Round to 3 significant figures: 327g
3.9 because when you use scientific notation you move your . Space
Answer:
The molarity of a solution is 2.5 M
Explanation:
Molarity is a concentration unit that describes how much of a solution is dissolved in solution.
Molarity of a solution can found by using the formula,
Molarity (M) = (moles of solute)/(Liters of Solution).
Given, mass of Sodium = 114.95 grams.
Volume of water = 2 L.
Here, Sodium is solute as it is dissolved in water, which is the solvent.
Moles of Sodium(solute) can be found by using the formula,
Number of Moles = mass/Molecular weight.
mass of Sodium = 114.95 grams.
Molecular weight = 22.989 grams
Number of Moles of Sodium(solute) =114.95/22.989 = 5.
Substituting the values in the formula, we get,
M = 5/2 = 2.5 M