I need help figuring out the calculations of my experiment. I'm sure I did something wrong cause I can not figure how to calculate the mass of sodium chloride. My measurements follow.

1. 250 mL beaker = 8.4
2. Mass of container = 0.4013
3. mass of container + sodium chloride = 5.4013
4. mass of sodium chloride (show calculation setup)_____________

I subtracted .4013 from 5.0143 and got 5. but somehow I don't think this is correct. I NEED HELP
Thanking you in advance

If things are what you show then mass NaCl is 5.0000 and the extra zeros are necessary to show the number of significant figures. There is no indication for the use of the 8.4 nor the units.

To calculate the mass of sodium chloride in this experiment, you need to subtract the mass of the container from the combined mass of the container and sodium chloride.

Let's break down the calculations step by step:

1. The mass of the container is given as 0.4013 grams.
2. The mass of the container plus sodium chloride is given as 5.4013 grams.
3. To find the mass of sodium chloride, subtract the mass of the container from the combined mass.

Calculation:

Mass of sodium chloride = (Mass of container + sodium chloride) - Mass of container

mass of sodium chloride = 5.4013 g - 0.4013 g

mass of sodium chloride = 5 g

Based on your calculation, you subtracted 0.4013 from 5.0143, which yielded 5. This is indeed the correct result. The mass of sodium chloride in your experiment is 5 grams.

If you still have doubts or further questions, please let me know.