5.0 grams of solid Ce2(SO4)3 was added to 100 mL of water.
What is the total mass?
If the density of the water is 1.00 g/mL, the mass of the water is 100 g and the total mass is 105 grams. If your prof is picky about the number of significant figures you need to be careful how to report that. 100 has only 1 significant figure and would be written as 1.E2 to be added to 0.050E2 to make the total. But be careful before you write 1.05E2.
To find the total mass, you need to consider the mass of the solid Ce2(SO4)3 and the mass of the water.
The given mass of the solid Ce2(SO4)3 is 5.0 grams.
The mass of the water is given as 100 mL. However, since density is the ratio of mass to volume (density = mass/volume), we need to know the density of water to find its mass.
The density of water is approximately 1 gram per milliliter (g/mL).
So, the mass of the water can be calculated as:
Mass of water = Density of water × Volume of water
= 1 g/mL × 100 mL
= 100 grams
Now, to find the total mass, add the mass of the solid and the mass of the water:
Total mass = Mass of solid + Mass of water
= 5.0 grams + 100 grams
= 105 grams
Therefore, the total mass is 105 grams.