Please help !!!
A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of the water was 50.0 mL. With the object submerged,the volume was 83.6mL. What would she find was the density of the object?
I divided mass by volume and got 4.01 g/mL but I don't think this is correct.
density = mass/volume
density = 335/(83.6-50)
You want the volume of the object rather than the object and the water.
the density of an object with a volume of 60.0 ml and a mass of 400.0g is
To find the correct density of the object, you need to calculate the volume change caused by the submerged object. Here's a step-by-step solution:
Step 1: Calculate the volume change:
Volume change = Final volume - Initial volume
Volume change = 83.6 mL - 50.0 mL
Volume change = 33.6 mL
Step 2: Convert the volume change to liters:
Volume change = 33.6 mL * (1 L / 1000 mL)
Volume change = 0.0336 L
Step 3: Calculate the density:
Density = Mass / Volume
Density = 335 g / 0.0336 L
Density = 9970.24 g/L
So, the correct density of the object is 9970.24 g/L.
To find the density of an object, you need to divide its mass by its volume. In this case, the student found the mass of the object to be 335 grams and the volume of the object using water displacement to be 83.6 mL.
To determine the volume of the object, the student measured the initial volume of the water, which was 50.0 mL. Then, with the object submerged, the volume increased to 83.6 mL. This means that the volume of the object alone is equal to the difference between these two volumes:
Volume of the object = Final volume - Initial volume
Volume of the object = 83.6 mL - 50.0 mL
Volume of the object = 33.6 mL
Now, to calculate the density, divide the mass of the object by the volume of the object:
Density = Mass / Volume
Density = 335 g / 33.6 mL
To ensure consistent units, you need to convert the volume from milliliters (mL) to grams (g) since the mass is in grams. To do this, you can recall that 1 mL of water is equal to 1 gram. So for the object made of an unknown substance, you can assume the same conversion factor.
Density = 335 g / 33.6 g
Density = 9.97 g/mL
Therefore, the student would find that the density of the object is approximately 9.97 g/mL, not 4.01 g/mL as initially calculated.