Hey there!
Given the reaction:
P4 + 10 Cl2 ------------------ 4 PCl5
Molar mass P4 = 124 g/mol
Number of moles P4:
n = mass of solute / molar mass
n = 24.0 / 124
n = 0.1935 moles of P4
Therefore:
1 mole P4 --------------- 4 moles PCl5
0.1935 moles P4 ------- moles PCl5
moles PCl5 = 0.1935 * 4
= 0.774 moles of PCl5
Hope that helps!
Items of different densities can be separated by methods like the density column or using a liquid medium with a density in between the solids. High-density items sink, and low-density items float, enabling easy separation.
You can separate items of different densities by using a method called density column. This method involves stacking liquids of different densities on top of one another. For example, if you have oil and water, both liquids would not mix due to their different densities. Water has a higher density than oil, so oil will float on top of the water. You then could separate the two by carefully siphoning off the oil on top.
Similarly, if you have a mixture of solids with different densities, you can use a liquid medium that has a density between the two solids. The solid with the higher density will sink, whereas the solid with a lower density will float, allowing for easy separation.
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Answer:
A. testing the theory of atoms.
Explanation:
J. J. Thomson is well known scientist for discovering the electron as a part of atom's structures, which changed the perception of this matter, and it was a significant event for physics.
Answer: The object will float.
Explanation:
Balanced force is defined as the force that gets cancelled out when equal forces are acting in the opposite direction. The net force on the system comes out to be 0.
Unbalanced force is defined as the force that does not get cancelled out because unequal forces act on the system in opposite direction. The motion of the object is in the direction of net force.
According to the question:
Object is exerting a downward force of 10 N on the water and water is exerting an upward force of 12 N on water.
As, the upward force by water is more than the downward force by object. So, the object will float on the surface of water.
If the downward force by the object is been more than the upward force, the object will sink.
Hence, the object will float.