What is an object with a very high resistance classified as?
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Related Questions
45.0 mL of a Naoh solution is titrated with 0.12 M HCl. If 29.6 mL is required for neutralization,what is the concentration of the NaOH solution?
What is the main difference between extensive and intensive physical properties?
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Why do elements in a group on the periodic table have similar chemical properties? A.same number of outermost electronsB.same number of protonsC.similar atomic massesD.similar atomic numbers
According to one acid-base theory, the H2O molecule
(1) accepts H+ ions (3) donate H+ ions
(2) accepts OH- ions (4) donates OH- ions
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The statement, that describes acid-base theory in which the H2O molecule is "accepts ions."
What is an acid-base theory?
An acid is a compound that accepts a pair of electrons. A base is a generator of electron pairs. This is the broadest theory of acids and bases. Water can serve as both an acid and a base in solution, and it can also be both an acid and a base to itself. Water takes hydrogen ions and behaves as a base when coupled with an acid. When water is combined with a base, it gives hydrogen ions and so behaves as an acid. Using the balanced equation, the water molecule acts a acid which accepts the hydrogen ion. to form hydronium ion.
Hence the correct option is 1.
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2. Plasmas have a net negative charge.
3. The number of protons in an element is always equal to the number of neutrons.
4. Solids have a fixed mass, volume, and shape.
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Answer: Solids have a fixed mass, volume, and shape.
Explanation: Solids are the substances which have fixed shape, fixed volume and mass due to its close packed structure.
Dalton explained that all the elements are made up of small indivisible particle known as Atoms but after some time this was proved wrong as atoms is not indivisble, it conatins sub atomic particle like electrons, protons, neutrons etc.
Plasmas are considered as the fourth state of matter which contains equal quantity of positive ions and negative electrons.
The number of protons are equal to the number of electrons. The sum of number of protons and neutrons make the atomic mass quantity.
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Answer:
Net ionic equation:
Ca⁺²(aq) + CO²⁻₃(aq) → CaCO₃(s)
Explanation:
Chemical equation:
K₂CO₃ + CaCl₂ → KCl + CaCO₃
Balance chemical equation:
K₂CO₃(aq) + CaCl₂(aq) → 2KCl(aq) + CaCO₃(s)
Ionic equation:
2K⁺(aq) + CO²⁻₃(aq) + Ca⁺²(aq) + 2Cl⁻(aq) → 2K⁺(aq) + 2Cl⁻(aq) + CaCO₃(s)
Net ionic equation:
CO²⁻₃(aq) + Ca⁺²(aq) → CaCO₃(s)
The K⁺(aq) and Cl⁻ (aq) are spectator ions that's why these are not written in net ionic equation. The CaCO₃ can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
Final answer:
The net ionic equation for the reaction between K2CO3 and CaCl2 is Ca2+(aq) + CO3^2-(aq) --> CaCO3(s). This is obtained after removing the spectator ions (K+ and Cl-) from the full ionic equation.
Explanation:
The subject of discussion is the net ionic equation for the given chemical reaction between K2CO3(aq) and CaCl2(aq). An ionic equation represents the ions that are present in a chemical reaction, and a net ionic equation only shows the ions that actually participate in the reaction.
To form the net ionic equation, we first write the complete ionic equation. In this case, K2CO3(aq) breaks down into 2 K+(aq) + CO3^2-(aq), and CaCl2(aq) breaks down into Ca2+(aq) + 2 Cl-(aq). The products would be 2 K+(aq) + 2 Cl-(aq) + CaCO3(s).
The net ionic equation is then formed by canceling out the spectator ions (ions that do not participate in the reaction). Here, the spectator ions are K+ and Cl-. So, the net ionic equation is: Ca2+(aq) + CO3^2-(aq) --> CaCO3(s)
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A. The A group number tells which period the valence electrons are
in
B. The A group number tells how much mass the elements have.
C. All elements in the same A group will have the same number of
valence electrons.
D. All elements in the A group will have the same valence electrons
as the B group.
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Answer:
All elements in the same A group will have the same number of
valence electrons.
Explanation:
Group A has 1 valence electrons.
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Answer: Zn2C4H6O4
Explanation: The two on the outside is jusy multiplying with each elemennt and its number and Zn has an imaginary 1 beside it.
Answer:
Zn2C4H6O4
Explanation:
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Scientists tell us that the observable universe is about 90 light years but then I wonder how they calculated that because the universe is immense!
I'm sorry but I can't go deeper into explaining as that's a tough question.