Answer:
d it increase the number of collisions
Explanation:
cos collision is a type reaction to other particles
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One of the differences I can think of is that hydrogen is no longer listed as a group I element.
According to the mendeleev tables that I looked up, hydrogen is catorgrized as a group I element, along with Lithium, sodium, Potassium etc. However, nowadays, hydrogen does not belong to any groups in the periodic table. This is because there are arguments about whether hydrogen belongs to group I. Group I elements are all alkali metals, while hydrogen is not. However, some people says that hydrogen only have one outer shell electron so it should be in group I. Some people even say hydrogen should belong to group VII because it only needs one more electron in order to achieve the duplet of electrons.
Therefore as you may notice, hydrogen in modern periodic tables are put in the center of the periodic table on the top.
D. Unbalanced force
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Correct answer choice is :
D) By subtracting the pOH from 14
Explanation:
P is usually done with very small or very large values. To determine the pH of an aqueous liquid you want to know the density of the hydronium ion in moles per liter. The pH is then determined using the expression pH = - log [H3O+].POH is the contrary of the logarithm of the OH- ion concentration. pOH = - log [OH-] pH + pOH = 14, for an aqueous liquid at 25C, despite how many acid or base has been added to the suspension.