Final answer:
The mass of a substance with a density of 4.259 g/cm³ taking up 250.00 cm³ of space is 1064.8 g when rounded to four significant figures.
Step-by-step explanation:
To find the mass of a substance given its density and volume, we use the formula:
Mass = Density × Volume
The density of the substance is given as 4.259 g/cm³ and the volume is 250.00 cm³.
Multiply these two values to find the mass:
Mass = 4.259 g/cm³ × 250.00 cm³
Mass = 1064.75 g
The result has been obtained by multiplying a number with four significant figures by a number with five significant figures. However, when reporting the final answer, it should be rounded to the same number of significant figures as the measurement with the least number of significant figures, which in this case is four.
Therefore, the mass of the substance is 1064.8 g when rounded to four significant figures.