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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.?
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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
Which metals are kept in oil and in which is the most reactive?
the metals like Sodium and potassium are extremely reactive. so they are often placed under kerosene oil.
A block is placed in a tank of water and floats as shown The water level rises to height Δh1 The block is then taken out and a block of the same weight but smaller volume that also floats is placed?
Archimedes principle states that a floating body displaces its own weight of water. The density of the water is fixed so the volume displaced by a floating body is is the same for floating bodies of the same weight. The water level will still be delta h1 as the volume of the block is not relevant to the amount of water displaced.
What happens if density of a solid substance is more than liquid it is placed?
The solid cannot float in this liquid.
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.
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.
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.
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
Why does a rubber band increase in size when placed in kerosene?
The rubber band increased in size when you soak it in kerosene because it absorbed the kerosene. The kerosene has a higher concentration than the rubber band so the diffusion is going inside.
The fact that an object placed in water displaces some of that water is known as the Ripple Effect.?
false
What is the relationship between the volume and the buoyancy?
Density = mass / volume. An object will float if it has less density than the fluid in which it is placed. The buoyant force is equal to the volume (this may be the submerged part of the volume) times the density of the displaced fluid.
What happens to a piece of copper placed in magnesium chloride solution?
Any reaction occur.
Why does anything sink?
An item will sink if its overall density is greater that the density of the fluid in which it is placed
Archimedes' principle states that an object placed in a fluid will experience a buoyant force to the weight of the fluid it displaces true or false?
TRUE
What effect does the density of liquid have on the buoyancy of an object?
An object with lower density than the liquid will float, one with more density will sink. Anything with the same density will stay at the depth where it is placed. If it is placed half submerged it would sink until submerged.
Would the density of white oak sink or float if it is placed in water?
The density of the wood would not be affected by being placed in water. However, the wood itself, with a density of about 0.77 gm/cm3 , would float.
