the balanced chemical equation for one neutralization reaction. In your equation, which reactant contributed the salt's positive ion? Which one contributes the salt's negative ion?
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Answer:
See the answer below
Explanation:
A neutralization reaction is a reaction that involves acid and base with the production of salt and water as the end products. An example is as below:
HCl + NaOH --> NaCl + H2O
The salt produced here is NaCl. In solution, NaCl will ionize as:
Hence, the salt's positive ion (Na+) was contributed by the base (NaOH) while its negative ion (Cl-) was contributed by the acid (HCl).
Final answer:
In a neutralization reaction involving Ba(OH)2 and HNO3, the salt's positive ion comes from the base and the negative ion comes from the acid. In the molecular and net ionic equations, spectator ions, which are unaltered in the process, are included and excluded respectively.
Explanation:
In a neutralization reaction, an acid and a base react to produce water and a salt. Taking the provided reaction of Ba(OH)2 (aq) + 2HNO3(aq) → Ba(NO3)2(aq) + 2H₂O(1), the salt's positive ion (Ba²+), also known as the cation, comes from the the base, Ba(OH)2. The salt's negative ion (NO3-), also known as the anion, comes from the acid, HNO3. This reaction also represents a molecular equation where all reactants and products are represented as neutral substances. A net ionic equation would exclude the spectator ions, ions whose presence is required to maintain charge neutrality but are chemically and physically unaltered by the process.
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37 Which general trends in first ionization energy and electronegativity values are demonstrated by Group 15 elements as they are considered in order from top to bottom?(1) The first ionization energy decreases and the electronegativity decreases.(2) The first ionization energy increases and the electronegativity increases.(3) The first ionization energy decreases and the electronegativity increases.(4) The first ionization energy increases and the electronegativity decreases.
Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value. 0.01325 = _____
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Answer:
3) Each sample has the same number of molecules
Explanation:
1 mol are 6,022x10²³ particles. Moles of a chemical substance represent the number of molecules that this chemical has.
Thus, one mol of oxygen are 6,022x10²³ molecules of oxygen and one mol of nitrogen are 6,022x10²³ molecules of nitrogen.
Right answer is:
3) Each sample has the same number of molecules.
I hope it helps!
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p is constant
v1=600, t1 =20c=293K
v2=?, t2=60c=333K
temperature must be in Kelvin
do the math
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U = mCpΔT
where:
m = mass of material
Cp = specific heat capacity of material; in this case, Cpwater = 4.186 J/(g-°C)
ΔT = change in temperature of material
U = 18(4.186)(20-(-10)) = 2260.44 Joules or B.
A positive term means energy was absorbed.
the correct answer is 7897.0 Joules
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Answers
When atoms react they form a chemical bond which is defined as a force of attraction that holds atom together. A force of attraction is defined as a kind of force that draws two or more objects together regardless of distance. There are two major categories of forces of attraction, one is intramolecular and intermolecular. Intramolecular forces is the presence of forces in atoms internally. While intermolecular is the force by which the force that is existent in two or more elements.
Final answer:
A chemical bond forms when atoms react, creating an electrical attraction that results in a molecule. Molecules can be formed from the same or different elements. Chemical reactions involve the forming or breaking of these bonds.
Explanation:
When atoms react, they form a chemical bond. This bond is an electrical attraction, either weak or strong, that holds atoms in proximity to each other. The formation of this bond results in a stable grouping known as a molecule, which can be composed of the same or different elements. An example of this is H2, or molecular hydrogen. When the molecule is formed from different elements, it's called a chemical compound, such as H₂O (water) or CH4 (methane).
Chemical bonds form because it is energetically favorable for atoms to have a full outermost electron shell, creating stability. Atoms can obtain this stable configuration by donating, accepting, or sharing electrons with other atoms. Chemical reactions occur when these bonds are formed or broken, transforming the reactants (starting materials) into products (end results).
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