Final answer:
The mass/mass percent calculation is the best way to describe the concentration of glucose when 1 gram is dissolved in 1 kg of water, which would be 0.1% glucose by mass.option B) Mass/mass percent
Step-by-step explanation:
To find the best calculation to describe the concentration of glucose when 1 gram of solid glucose crystals is dissolved in 1 kg of water to make a solution, the mass/mass percent concentration is the appropriate calculation. This is because both the solute (glucose) and solvent (water) are given in mass units.
The mass/mass percent is calculated as (mass of solute/mass of solution) × 100%. In this case, if we assume the density of the solution is approximately that of water, we would consider the combined mass of the water and glucose (which remains roughly 1 kg as glucose only adds a negligible amount of mass), making the calculation (1 g / 1 kg) × 100% = 0.1% glucose by mass.
The information provided around molarity, density, and solutions involving different concentrations is helpful background, but for this simple problem, the mass/mass percent is the most direct and applicable method of expressing concentration.