A 3.0 M HCl(aq) solution contains a total of(1) 3.0 grams of HCl per liter of water
(2) 3.0 grams of HCl per mole of solution
(3) 3.0 moles of HCl per liter of solution
(4) 3.0 moles of HCl per mole of water
Answers
Answer : The correct option is, (3) 3.0 moles of HCl per liter of solution
Explanation :
Molarity : It is defined as the number of moles of solute present in one liter of the solution. The S.I unit of molarity is mole per liter.
It is represented as,
where,
V = volume of solution in liter
As we are given 3.0 M HCl(aq) solution this means that 3.0 moles of HCl present in one liter of solution.
Hence, a 3.0 M HCl(aq) solution contains a total of 3.0 moles of HCl per liter of solution.
Answer (3)
hope this helps!
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Answers
2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O
The answer is:
2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O
Further Explanation
In chemistry, the equation of a reaction or chemical equation is that the symbolic writing of a reaction. The statement of the reagent is written to the left of the equation and so the statement of the merchandise is written to the proper. The coefficient written to the left of a statement could be a stoichiometric coefficient, which describes the quantity of that substance involved in an exceeding reaction relative to a different substance. The reaction equation was first made by the iatrochemist Jean Beguin in 1615. in an exceeding reaction equation, reagents and products are connected by different symbols. The symbol → is employed for one-way reactions, ⇆ for two-way reactions, and ⇌ equilibrium reactions.
The reaction might be an action that always produces interchange of chemical compounds. The initial compounds or compounds involved within the reaction are called reactants. Chemical reactions are usually characterized by chemical changes and can produce one or more products that typically have different characteristics from reactants. Classically, chemical reactions involve changes involving the movement of electrons within the formation and breaking of chemical bonds, although the final concept of chemical reactions can even be applied to the transformation of elementary particles like in nuclear reactions.
Chemical compounds are pure chemicals that encompass two or several elements that will be lessened into its constituent elements by chemical reactions. as an example, dihydrogen monoxide (water, H2O) could be a compound consisting of two hydrogen atoms for every oxygen atom. Generally, this comparison must be fixed thanks to its physical nature, not a comparison made by humans. Therefore, materials like brass, YBCO superconductors, "aluminum gallium arsenide" semiconductors, or chocolate are considered mixtures or alloys, not compounds. The characteristic of compounds is the presence of chemical formulas. The statement provides a ratio of atoms in an exceeding substance, and therefore the number of atoms in an exceedingly single-molecule (therefore the statement of ethene is C2H4 and not CH2. The statement doesn't specify whether the compound consists of molecules; as an example, binary compound (table salt, NaCl) could be a compound ionic.
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definition of chemical equation brainly.com/question/2416066
definition of Chemical compounds brainly.com/question/2416066
definition of The chemical reaction brainly.com/question/2416066
Details
Grade: High School
Subject: Chemistry
keywords: chemical equation
Answers
The solutes dissolves in solvent results in the formation of a solution.
Those mixtures in which the components of mixture are uniformly distributed throughout the mixture are said to be homogeneous.
Those mixtures in which the components of mixture are not uniformly distributed throughout the mixture are said to be heterogeneous.
Those solutions whose concentrations are accurately known are known as standard.
Hence, a mixture of uneven distribution and easy separation is heterogeneous.
Answer:
A heterogenous separation!
Explanation:
Answers
Answers
CaCl2
Ca(NO3)2
Ca(OH)2
CaSO4
BaCl2
Answers
CaCl2=40.08+35.45x2=110.98g/mol
*Ca(NO3)2=40.08+14.01x2+16x6=164.1g/mol
*Ca(OH)2=40.08+16x2+1.008x2=74.096g/mol
CaSO4=40.08+32.06+16x4=136.14g/mol
BaCl2=137.33+35.45x2=208.23g/mol
*these 2 require you to distribute the 2 into each of the elements.
Answer:0.0008 mmg
Explanation:
Answers
The radius of a positive ion always less than the radius of its neutral atom because the nucleus pulls the remaining electrons in closer.
What is an atom ?
Each atom is made up of a nucleus and one or more electrons that are linked to it. One or more protons and a significant number of neutrons make up the nucleus.
Only the most prevalent kind of hydrogen is neutron-free. The smallest component of ordinary stuff that makes up a chemical element is an atom.
Quarks and electrons are the two categories of fundamental particles that make up an atom. An atom's nucleus is surrounded by an area of electrons. The electrical charge of every electron is negative one.
Protons and neutrons, which together make up an atom's nucleus, are made of quarks.
Thus, option A is correct.
To learn more about an atom, follow the link;
#SPJ2
(A)-This sounds accurate, but is actually not true. When an atom loses an electron and forms a positive ion, there will be less negative charge from the electrons to attract the positively charged nucleus. Losing electrons will actually decrease the attraction between the electrons and the nucleus.
(B)-This is true in some cases, but not all. If, for example, sodium were to lose an electron, it would drop down to having its largest orbital being in the second energy level, and would decrease in size. If magnesium were to lose an electron, it would still have one electron in the third energy level, so it wouldn't drop down an energy level.
(C) and (D)-Not sure where these answers even came from.
The actual reason behind the radius of a positive ion being smaller than the radius of its neutral atom is that the repulsive force between the electrons themselves is decreased, causing them to move closer together.