The answer is 1.20 grams.
18.200 is already rounded to 0.001
It is 27 grams.
The answer depends on the units used for 2.68: pounds, milligrams, tons?
448/168 = 2.666 (rounded, repeating)
12 grams.
The answer depends on the units used for 8.275. It should be blindingly obvious to anybody that the answer for 8.275 grams and 8.275 tons, for example, will be very different.
hundredth of a gram
4.9
3.8
18.200 is already rounded to 0.001
To calculate the percent weight of FeCl3 in the solution, you need to determine the weight of FeCl3 and the total weight of the solution. 100 grams of FeCl3 in 1000 grams of solution (since 900 mL of water is approximately 900 grams) gives a percent weight of FeCl3 of 10%.
5 g
It is 27 grams.
If that's grams, it rounds to 2
2.3
It is 2 grams.
6.7