0
When placed in pycnometer 20 g of salt displaces 7.6 g of kerosene. If the mass density of kerosene is .83 gcm3 find the volume and density of the salt.?
To find the volume of the salt, we use the mass of kerosene displaced. Since 7.6 g of kerosene is displaced, the volume of the salt can be calculated using the density of kerosene:
[ \text{Volume of salt} = \frac{\text{mass of kerosene}}{\text{density of kerosene}} = \frac{7.6 , \text{g}}{0.83 , \text{g/cm}^3} \approx 9.15 , \text{cm}^3. ]
Next, we find the density of the salt using its mass and the calculated volume:
[ \text{Density of salt} = \frac{\text{mass of salt}}{\text{volume of salt}} = \frac{20 , \text{g}}{9.15 , \text{cm}^3} \approx 2.19 , \text{g/cm}^3. ]
What else can I help you with?
A rock will sink because it is heavier than..?
A rock will sink because it is more dense than the liquid into which it is placed.
Why sodium is not placed in air?
Sodium is not placed in air because it is highly reactive and in the air it reacts with air very violently with the oxygen and burns with explosion. Hence it is always kept inside kerosene
What happens if density of a solid substance is more than liquid it is placed?
If the density of a solid substance is greater than that of the liquid it is placed in, the solid substance will sink to the bottom of the liquid. This occurs because objects with higher density will displace an equal volume of the lower density liquid, causing the solid to sink.
When placed in water ice rises to the top of the liquids. Unlike most solids that sink when placed in their liquids forms ice floats because?
There are microscopic bubbles of air trapped in the ice - making it lighter than the water.
Is it true that floatation separates mixtures based on density?
Yes, floatation can separate mixtures based on density. By adjusting the density of the medium in which the mixture is placed, substances with different densities will either sink or float, enabling their separation.
Why does an object float in water sinks in kerosene oil?
No. The ice does not float on oil or kerosene, it is because a kerosene is a non-polar solute whil the ice which came from H2o is a polar solute in which it contradicts with each other. When the ice melts, the ice become water, the water is denser than kerosene, so the kerosene floats for it has a lighter density while the water sinks for it has a denser density.
If a sample of iron with a density of 7.874 gcm3 displaces 76.0 mL of water when placed in a beaker what is its mass?
The mass of iron is 598,4 g.
Why the shape of pycnometer cap is conical?
Oh, dude, the shape of the pycnometer cap is conical because it allows for easy pouring and minimizes spillage when you're filling it up with liquid. Plus, the conical shape helps to create a tight seal, preventing any leaks or evaporation. So, like, it's basically designed to make your life easier when you're measuring the density of a substance.
Why do the objects that sink in water float on kerosene?
Objects that are denser than water will sink in water because they displace a volume of water that is equal to their own weight. When placed in kerosene, which is less dense than water, the objects displace a smaller volume of kerosene than their own weight, causing them to float. This is due to the principle of buoyancy, where an object will float if it displaces a fluid with a greater weight than itself.
Why does a cup of nothing float?
A cup placed in water appears to float because it displaces an amount of water equal to its own weight, creating an equilibrium when the weight of the water it displaces matches the weight of the cup. This principle is known as buoyancy.
What will an object do when it is placed in a liquid of greater density?
It could dissolve.Or it could float or sink. Which of the two it does depends on the mass of the liquid that it displaces which, in turn, depends on the shape of the object.
Will something weighing 1kg float in water?
No, 1kg object will sink in water because it is heavier than the water it displaces, causing it to have a greater density than water. Objects float when they have a lower density than the fluid they are placed in.
What is the density of tile in the heat shield of the space shuttle if the tile weighs 150 gram and displaces 75 ml when placed in a beaker full of water?
Mathematically:where:ρ (rho) is the density, m is the mass, V is the volume.ρ = 150/75 = 2 g/mL
What is the meanig of pycnometer?
A gas pycnometer operates by detecting the pressure change resulting from displacement of gas by a solid object. Expanding a quantity of gas at known pressure into an empty chamber and measuring the pressure establishes a baseline.Then a sample is placed in the chamber and the chamber is resealed. The same quantity of gas at the same pressure is again expanded into the sample chamber, and the pressure is measured. The difference in the two pressure combined with the known volume of the empty sample chamber allows the volume of the sample to be determined by way of the gas law. --GOLD APP INSTRUMENTS
What factors determine how heavy an object can be and still float?
An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.
An object most likely sink in water if it has low density?
The lower an objects density the less likely it is to sink in water. Objects with a higher density than water will sink if placed in it while objects with a lower density than water will float if placed in it.
What 2 factors determine how heavy an object can be and still float?
The weight of the object must be less than the weight of the water it displaces (buoyancy force). Also, the density of the object must be less than the density of the fluid it is placed in (Archimedes' principle).
