a 4.369g sample of metal is placed in a flask. water is added to the flask and the total volume in the flask is read to be 126.4ml. the mass of the water, flask, and metal is 268.5g. if the mass of the flask is 139.3g and the density of water is 1.000g/ml, the density of the solid is
2.78
this is the correct answer 2.78
density = mass/volume. You know the mass from the problem, directly. The rest of the problem is about finding the volume.
268.5 = mass flask, H2O, metal
-139.3 = mass flask
-4.369 = mass meal
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ansxxgrams = mass H2O
Volume H2O = mass H20/density H2O = about 124 something. But the problem states that the total volume (with the solid) is 126.4; therefore, volume of the solid is 126.4-124 something.
Then density of Metal = mass metal/volume metal
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 mL. The mass of the water, flask, and metal is 268.5 g. If the mass of the flask is 139.3 g and the density of water is 1.000 g/mL, what is the density of the solid in g/cm3.
To find the density of the solid, we need to know its mass and volume.
1. Start by calculating the mass of the metal alone. Subtract the mass of the flask and water from the total mass:
Mass of metal = Total mass - Mass of flask and water
= 268.5g - 139.3g
= 129.2g
2. Next, calculate the volume of the metal using the principle of displacement.
Volume of metal = Total volume - Volume of water
= 126.4ml - Mass of water
= 126.4ml - (Total mass - Mass of flask)
= 126.4ml - (268.5g - 139.3g)/1.000g/ml
= 126.4ml - 129.2ml
= -2.8ml
Note: The negative volume indicates that the metal is denser than water and displaces less volume.
3. Now, we have the mass and volume of the metal. Calculate the density using the formula:
Density = Mass / Volume
= 129.2g / -2.8ml
= -46.14g/ml
The density of the metal is approximately -46.14 g/ml.
However, it's worth noting that a negative density value is not physically meaningful. It could be a result of errors in the measurements or calculations. It's possible that a mistake was made along the way. Double-check the calculations and data to ensure accuracy.