Answer:
The d-block elements are all metals and most have one or more chemically active d-orbital electrons. Because there is a relatively small difference in the energy of the different d-orbital electrons, the number of electrons participating in chemical bonding can vary.
D. Biased data is likely skewed for or against some variable tested, meaning it isn't an honest study.
Answer:
Equilibrium position shifts right.
Explanation:
According to Le Châtelier's principle, when a chemical system at equilibrium is distributed by a change in conditions, the equilibrium position will shift in a direction that tends to counteract the change.
So, when the concentration of reactant increases, the equilibrium will counteract the change by increasing the concentration of the products, hence shifting right to increase the concentration of water.
Answer:
Group 1 (or IA)
Explanation:
If element X is a halogen, then it belongs to the group 17 (or VIIA, under a different notation).
For each extra unit of atomic number, the group number increases by 1. That means that the X+1 element would belong to the group 18 (or VIIIA). <em>The X+2 element would thus belong in the group 1 </em>(or IA) one period higher (higher as in numeric value, not as in position in the periodic table).
Hey there!:
<span>Use the Avogadro constant :
</span>
1 mole -------------- 6.02*10²³ molecules
0.0524 moles -------- molecules H2O
molecules H2O = 0.0524* ( 6.02*10²³) / 1
molecules H2O = 3.15*10²² / 1
= 3.15*10²² molecules H2O