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dalvyx [7]
3 years ago
15

What is the pH of a solution whose hydronium ion [H20+] (or proton [H+1)

Chemistry
1 answer:
pav-90 [236]3 years ago
8 0

Answer:

pH =  -  log(7.6 \times  {10}^{ - 5} )  \\ pH = 4.12

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An element that appears in the lower left corner of the periodic table is
Xelga [282]
This problem is honestly, very easy. Just grab a periodic table and find the element in Group 1 and Period 7. But first, let's discuss how the elements are arranged systematically in a periodic table. There are a lot of scientists who contributed to it, but the most famous one is Dimitri Mendeleev. He arranged the elements according to their atomic number. The elements starts from 1 which is Hydrogen up to the heaviest known elements which is Oganesson with an atomic number of 118. As you can observe, there is a gap between groups 3 and 4. This is done so that the periodic table does not take too much space horizontally. Thus, they are just placed at the bottom. These elements are called lanthanides (upper row) and actinides (lower row). The rows in the periodic table are called groups, and the columns are called periods.

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6 0
3 years ago
Neha and Reha are playing see-saw. Neha is sitting 60 cm away from the fulcrum and Reha is sitting 40 cm away from the fulcrum.
stich3 [128]

Answer:

Reha should apply 540 N to lift Neha.

Explanation:

L = 360 N

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E =?

ED = 40m

NOW

L * LD = E * ED

360 *60 = E*40

21600/40 = E

540 N = E

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