Mostly and for what I would say is A
The following choices are all extensive properties, meaning they do not change with the amount of the substance. Although, 3 of the properties, namely, density, solubility and thermal conductivity are temperature-dependent. Since the problem did not mention of heating, let's assume Kenya just used it directly for her meal. Among the choices, I think shape would change. Once you place it in the meal, you can no longer pinpoint the salt because it's shape has been changed.
The problem with this is which R do you use in PV = nRT. Everything else is straightforward. You can google the multitude of Rs that come about because the only difference is in the units used. Most of the time it is 8.314. When you google, call it the gas constant in PV = nRT. Keep it bookmarked when you are doing problems in this section.
R = 8.314 L kPa/(mol oK)
T = 25oC = 25 + 273 = 298oK
P = 95000 Pa
V = 1.0 L
Now you are all set to find n
Rearrange the formula
n = PV/(RT)
n = 95000 * 1/ (8.314 * 298)
n = 38.343 Seems like an awful lot. But that's what you are getting
