Thermodynamically favored process are those processes that do not require any assistance from outside the system e.g water boils at 25 degrees. Thermodynamically unfavored processes require assistance from outside to induce the required change for example water doesn't freeze at 15 degrees and therefore for that to happen several factors in the system have to be modified to achieve this. Therefore, there is a possibility of companies to produce product by using thermodynamically unfavored process by inducing changes in the system to achieve desired change or modification.
Answer:
numbers of molecules = 3×6.023×10-23
Answer:
It decreases
Explanation:
As you go down a group from top to bottom, the electronegativity decreases. Across a period, electronegativity increases from left to right.
- Electronegativity is the tendency with which the atoms of the element attracts valence electrons in a chemical bond.
- The more electronegative an element is, the stronger its affinity for electrons.
- Electronegativity values less than 2 shows an element is a metal.
- Metals are generally electropositive.
54.0 ml of a 1.2 m solution was diluted to a total volume of 228 ml
USing dilution equation
M1V1 = M2V2
Where M1V1 is before dilution while M2V2 is after dilution.
Therefore;
M1= 1.20 M, V2= 54 ml,
M2= V2 = 228 ml
1.20 M × 54 ml = M2 × 228 ml
M2 = (1.2 ×54)/ 228 ml
= 0.2842 M
0.2842 × 114 ml = M2 × (114 +111)
M2 = (0.2842 ×114)/ 225
= 0.143995
= 0.144 M
The elements likely to form an ionic bond are (A) Na and F, (B) Ca and Cl and (E) K and I.
Answer: A, B & E
Explanation
Ionic bonds are the bond formed between two elements by transferring of electrons.
One of the elements tend to be metal which can easily lend its valence electrons to the other element which will is generally a non-metal.
The metallic element which gives an electron becomes positively charged ion termed as cation.
The non-metallic element, which has the ability to attract electrons towards itself, will capture the electrons released by the metal and becomes the negatively charged ion termed as anion.
So this describes the transfer of electrons from atoms of one element to atoms of another element and forming a bond termed as ionic bond.
So among the given options, the option (A) has Na and F as elements among which Na is a metal and F is a non-metal, so they can form ionic bonding easily. Similarly option (B) has Ca and Cl as elements which are also metal and non-metal combination, so they can also form ionic bond. The same cause can be said for ionic bond formation for the elements given in option (E). The option (C), (D) and (F) have elements which are both non-metals so ionic bonding is not possible.
Thus the elements in options (A), (B) and (E) can form ionic bond.
