Final answer:
The percent by mass concentration of the saltwater solution with 50g salt and 900g water is found using the formula (mass of solute / total mass of solution) x 100%, which equals approximately 5.26%.
Step-by-step explanation:
The question is about calculating the mass/mass percent concentration of a saltwater solution. To find the percent by mass concentration, you divide the mass of the solute (salt) by the total mass of the solution (salt plus water) and then multiply by 100%. In this scenario, you have 50g of salt and 900g of water, making the total mass of the solution 950g (50g salt + 900g water).
The percent by mass concentration is calculated using the formula: Percent by mass = (mass of solute / total mass of solution) x 100%
Substituting the given values into this formula, we get: (50g / 950g) x 100%.
Thus, the mass/mass percent concentration of the salt in the saltwater solution is approximately: 5.26%.