The best way to accurately determine the pair with the highest electronegativity difference is by using their corresponding electronegativity values. For the each of the choices, the difference is:
A. H-S = 2.5 - 2.1 = 0.4
B. H-Cl = 3 - 2.1 = 0.9
C. N-H = 3 - 2.1 = 0.9
D. O-H = 3.5 - 2.1 = 1.4
E. C-H = 2.5 - 2.1 = 0.4
As show, D. has the highest difference. Without looking at their values, you can also determine the pair with the highest difference by taking note of the trend of electronegativity on the periodic table. Electronegativity increases as you go right a group and up a period. This makes oxygen the most electronegative element among the other elements paired with hydrogen.
<span>The Law of Conservation of Mass simply states
that the total amount of mass should not change in a chemical reaction that is
isolated (no other objects can enter the reaction). The total mass of the
reactants must be equal to the total mass of the products. Thus, t</span>he correct estimate of
the amount of oxygen used in the interaction is the difference between 133
g and 29 g.
Answer:
Explanation:
Because if the equation is truly balanced, the elements on one side equal the element numbers on the other. Take a simple example.
Ba(OH)2 + 2HCl ==> BaCl2 + 2HOH
Now consider what is true.
Element Number of the left Number on the right.
Ba 1 1
O 2 2
H 4 4
Cl 2 2
Nothing has changed going from the left to the right. You may wonder how you get 4 for the hydrogens.
Ba(OH)2 has 2 hydrogens. You multiply the 2 by the hydrogens in the brackets.
2HCl = The 2 in front affects both the hydrogens and the chlorines. There are 2 hydrogens from the HCl
Total: 2 + 2 = 4 hydrogens. The right side is done the same way.
You are not getting different results on the right side than those that you had on the left. Mass is preserved. 1 Ba + 2 Os + 4Hs and 2 Cls on the left, gives the same numbers on the right. There is no loss of mass.
Answer:
kahamnida thank you ok soarry.
Answer:
all elements have a different atomic number
Explanation:
Atomic number of element does not affect their reactions with others
