Answer:
The state of the water molecule, when its ice it become a special crystallized structure.
Explanation:
Answer: 4
Explanation:
Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.
Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...
Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of will be -2, -1, 0, +1, +2.
Given : a f subshell, thus l = 3 , Thus the subshells present would be 3, 2, 1, 0 and thus n will have a value of 4.
Also electrons give are 32.
The formula for number of electrons is .
Thus principal quantum no will be n= 4.
Explanation:
Volume of solid metal = 102.6ml - 100ml = 2.6ml.
Mass of solid metal = 50g.
Density = Mass / Volume = 50g / 2.6ml = 19.2g / cm³.
Also from our knowledge, only gold metal is yellowish here.
Hence the answer is gold metal.
The correct option is this: TWO STEPS OF THE PROCESS ARE ENDOTHERMIC AND ONE STEP IS EXOTHERMIC.
The enthalpy change of solution refers to the heat change that occur when a substance is dissolved in a solvent.
Dissolving a substance in a solvent involves three distinct steps:
1. the breaking of the inter molecular forces that is holding the substance together. This process is endothermic because it needs energy to occur, therefore its enthalphy change is greater than zero.
2. The breaking of inter molecular forces that is holding the solvent molecules together. This process is also endothermic.
3. The mixing together of the solute and the solvent. The reaction is an exothermic reaction because energy is given off as the molecules bond togeher. <span />