Question

A clean, dry evaporating dish is 12.31 g. The evaporating dish with 10.m mL of NaCl solution is 22.90 g. The evaporating dish and the dry NaCl is 12.91 g. Calculate the mass of the NaCl after drying.

Answer 1

The mass of NaCl after drying is found by subtracting the weight of the clean evaporating dish from the weight of the dish with dry NaCl, which gives a final mass of 0.60 g.

Step-by-step explanation:

To calculate the mass of the NaCl after drying, we will use the data provided about the weights of the evaporating dish alone, with the NaCl solution, and after drying. First, we subtract the mass of the clean, dry evaporating dish from the mass of the evaporating dish with the NaCl solution to find the mass of the solution alone:

• Mass of solution = Mass of dish with NaCl solution - Mass of clean dish
• Mass of solution = 22.90 g - 12.31 g
• Mass of solution = 10.59 g

Next, we find the mass of the NaCl by subtracting the mass of the clean, dry evaporating dish from the mass of the dish with the dry NaCl:

• Mass of NaCl = Mass of dish with dry NaCl - Mass of clean dish
• Mass of NaCl = 12.91 g - 12.31 g
• Mass of NaCl = 0.60 g

The final mass of the NaCl after drying is 0.60 g.