what is the density of an 84.7g sample of an unknown substance if the sample occupies 49.6cm3? what volume would be occupied by 7.75g of this same substance? PLEASE help need the answer tonight i have a test tomorrow i kind of not understand the second question. THANK YOU SO MUCH.
part 1: 1.70 g/cm3
part 2: 4.55 cm3
Density = Mass / Volume ...(1)
mass = 84.7 g
volume = 49.6 cm³
Density = ? g/cm³
Part 2:
From (1), we have
volume = mass / density
Use mass = 7.75g and density calculated above.
1.70
what is the density of an 8.64 g sample of an unknown substance if the sample occupies 33.4 cm3?
To find the density of a substance, you need to divide its mass by its volume. In this case, the mass of the substance is given as 84.7 grams, and the volume is given as 49.6 cm³.
So, the density (D) of the substance can be found using the formula:
D = mass / volume
D = 84.7 g / 49.6 cm³
Calculating this division will give you the density of the substance.
Now, let's move on to the second question. You are asked to determine the volume occupied by 7.75 grams of the same substance. To solve this, we can rearrange the density formula:
D = mass / volume
By rearranging the formula, we can calculate the volume (V) using the given mass (m) and density (D):
V = mass / density
V = 7.75 g / (density of the substance)
Substitute the correct value for density (which you found in the previous question) into the equation and calculate the result. This will give you the volume occupied by 7.75 grams of the substance.
Remember to use the correct units throughout your calculations.