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svlad2 [7]
3 years ago
5

Cold water of the same source forms lather hardly with soap. Why?​

Geography
2 answers:
sergiy2304 [10]3 years ago
5 0

Answer:

Elaborate on the question

Explanation:

levacccp [35]3 years ago
4 0
Hardness of water is due to calcium and magnesium ions. when soap is added to hard water, calcium and magnesium ions replaces sodium (or potassium) ions in the salt (soap) and gets precipitated hence lather formation is hindered.
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Read these stanzas from the poem "Ballad" by Paul Laurence Dunbar.
slega [8]

<u>Answer:</u>

The narrator's mood is determined by the state of the relationship with his love.

<u>Explanation:</u>

In the given stanzas from the poem ""Ballad"" by Paul Laurence Dunbar ,it determines the narrator's mood in which state of the relationship with his love which can be shown as in the first stanza the author writes about all the nice and happy things in life as his love life is going well and good and happy

whereas it changes to a doubt for love and sadness and doubt is expressed as his relationship isn't in a good happy phase.

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4 years ago
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4 years ago
Which best compares and contrasts how John Newlands and Dmitri Mendeleev organized elements?
dangina [55]

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Explanation:

Both John Newlands and Dmitri Mendeleev were relevant chemists, mainly known for designing the period table, which organized chemical elements. In the case of Newlands, he designed his period table around 1865 by organizing the known elements based on the atomic masses of elements (number of protons and neutrons); also, he divided elements into groups.

On the other hand, Mendeleev designed his periodic table around 1869; in this, elements were also arranged by their atomic masses, but Mendeleev considered the properties of each element such as electronegativity, which implied some minor changes in order, as well as leaving some spaces for elements that had not been discovered, but that Mendelev could predict. Thus, the option that compares the organization in both periodic tables is B.

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