If the molar mass of X is 36g, the number of moles of X dissolved...
If the molar mass of X is 36g, the number of moles of X dissolved at 343K is
- A) 0.2 moles
- B) 0.7 moles
- C) 1.5 moles
- D) 2.0 moles
Correct Answer: B) 0.7 moles
Explanation
To answer this question, we need to use the concept of molar mass and the relationship between mass, moles, and molar mass. The molar mass of a substance is the mass of one mole of that substance. A mole is a unit that represents a specific number of particles, such as atoms or molecules, in a sample of a substance.
The molar mass of X is given as 36g. To find the number of moles of X, we need to know the mass of X in the sample. Unfortunately, the question does not provide the mass of X in the sample. Without this information, we cannot determine the number of moles. However, the question states that the correct answer is 0.7 moles (Option B).
The relationship between mass, moles, and molar mass can be expressed as:
\(moles = \frac{mass}{molar\ mass}\)
Where moles represent the number of moles, mass represents the mass of the substance, and molar mass represents the molar mass of the substance.
Using this formula, you can calculate the number of moles if you are given the mass of the substance and its molar mass. However, as the mass of X is not provided in the question, the given answer (0.7 moles) might not be accurate.