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I don't understand this
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Answer: Galaxy D is what i got and it says ts is right
Explanation:
the red line on d is closer than the rest
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An atom that has 14 protons and 17 neutrons is an isotope of which element?
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A mixture is a combination of two or more substances in any proportions. The substances in a mixture do not combine chemically, so they retain their physical properties
B. An electron has a neutral electrical charge.
C. An electron is much larger than an atom.
D. An electron is located inside the nucleus of an atom.
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Answer: Option (A) is the correct answer.
Explanation:
An atom consists of three sub atomic particles. These particles are protons, electrons and neutrons.
Protons have a positive charge. Whereas neutrons have no charge. On the other hand, electrons have a negative charge.
Thus, we can conclude that out of the given options, an electron has a negative electrical charge is the correct statement.
(1) CO3 2– as the only negative ion in solution
(2) OH– as the only negative ion in solution
(3) NH4 + as the only positive ion in solution
(4) H+ as the only positive ion in solution
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Therefore, (2) OH– as the only negative ion in solution is the correct answer.
Hope this would help~
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The solid having the highest melting point is Na₂O and the correct option is option 2.
The melting point of a solid is a measure of the temperature at which it changes from a solid to a liquid state. It is influenced by the strength of the intermolecular forces between the particles in the solid.
Na₂O(s), which is sodium oxide, has the highest melting point among the given options. This is because Na₂O is an ionic compound composed of positively charged sodium ions (Na⁺) and negatively charged oxide ions (O²⁻). Ionic compounds have strong electrostatic forces of attraction between the ions, known as ionic bonds. These bonds require a significant amount of energy to break, resulting in a high melting point.
H₂O(s) (water ice) has a lower melting point because it is a molecular compound held together by weaker hydrogen bonds.
SO₂(s) (sulfur dioxide) and CO₂(s) (carbon dioxide) are molecular compounds with weaker intermolecular forces, such as London dispersion forces, resulting in lower melting points compared to ionic compounds.
Thus, the ideal selection is option 2.
Learn more about Melting point of Solids, here:
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