In a chemical reaction, the limiting reagent is the chemical being used up while the excess reactant is the chemical left after the reaction process.
Before calculating the limiting and excess reactant, it is important to balance the equation first by stoichiometry.
C25N3H30Cl + NaOH = C25N3H30OH + NaCl
Since the reaction is already balanced, we can now identify which is the limiting and excess reagent.
First, we need to determine the number of moles of each chemical in the equation. This is crucial for determining the limiting and excess reagent.
Assuming that there is the same amount of solution X for each reactant
1.0 M NaOH ( X ) = 1.0 moles NaOH
1.00 x 10-5 M C25N3H30Cl ( X ) = 1.00 x 10-5 moles C25N3H30Cl
The result showed that the crystal violet has lesser amount than NaOH. Thus, the limiting reactant in this chemical reaction is crystal violet and the excess reactant is NaOH.
To identify the limiting reagent between sodium hydroxide and crystal violet, normally one would need the reaction equation and stoichiometry. Assuming a hypothetical 1:1 reaction, crystal violet would be the limiting reagent due to its much lower concentration compared to NaOH.
Explanation:The question asks to identify the limiting reagent in a reaction between sodium hydroxide and crystal violet and calculate the amount of excess reagent remaining after the reaction is complete. Since the concentration of sodium hydroxide (NaOH) is 1.0 M and the concentration of crystal violet is 1.00E-5 M, we do not have the actual reaction equation or the stoichiometry to determine the limiting reagent directly. Normally, the limiting reagent is the one that will be completely consumed first during the reaction, based on the stoichiometry of the reaction. Typically, the number of moles of each reagent would be considered; the one with the fewer moles, per the reaction stoichiometry, would be the limiting reagent.
As an example, if the reaction were 1:1, then clearly crystal violet would be the limiting reagent due to its much lower concentration. To find out how much NaOH remains, we would subtract the moles of NaOH that reacted with crystal violet from the initial moles of NaOH. However, in absence of the reaction equation and assuming a hypothetical 1:1 reaction, all of the crystal violet would react, leaving behind an excess of NaOH. If we had information on the volumes used, we could calculate the actual amount of NaOH remaining using dimensional analysis as demonstrated by various examples provided.
19. Some redox reactions are also classified as which of the following?
(Points : 3)
acid-base
synthesis
single-displacement
decomposition
Question 20. 20. If ions change places and a gas is formed, then what type of reaction is indicated?
(Points : 3)
double-displacement
synthesis
decomposition
single-displacement
19.) Single-displacement is the correct answer.
20.) I am not sure, but Single-displacement is incorrect. At least you can cancel that one out.
All substances are composed of which type of matter?
a. ions
b. mixtures
c. elements
d. molecules
Which of these has the greatest compressibility?
gas
liquid
solid
They are all equal.
Explain how burning a candle is an example of both physical and chemical changes.
Is boron an element a compound a heterogeneous mixture or a homogeneous mixture?
Boron is an element as it can not be broken down further by simple chemical processes.
What are elements?
It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.Elements are majorly classified according to their chemical properties.
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One mole of copper(ii) sulfate, cuso4, contains ________ o atoms.
One mole of copper(II) sulfate, CuSO4, contains 6.022 x 10^23 atoms.
Explanation:One mole of copper(II) sulfate, CuSO4, contains 6.022 x 1023 atoms. This can be determined using Avogadro's number, which states that one mole of any substance contains 6.022 x 1023 atoms or molecules. Therefore, in one mole of copper(II) sulfate, there would be 6.022 x 1023 copper atoms, 6.022 x 1023 sulfur atoms, and 24.088 x 1023 oxygen atoms.
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One mole of copper(II) sulfate contains four moles of oxygen atoms. Using Avogadro's number, it translates to approximately 2.4088 x 10^24 oxygen atoms.
Explanation:The question asks for the number of oxygen atoms present in one mole of copper(II) sulfate (CuSO4). Copper sulfate contains one copper atom (Cu), one sulfur atom (S), and four oxygen atoms (O). Hence, one mole of copper(II) sulfate would contain four moles of oxygen atoms.
Using Avogadro's number, which states there are 6.022 x 10^23 entities (such as atoms) in one mole, we can say that one mole of copper(II) sulfate contains 4 times 6.022 x 10^23 oxygen atoms, which is approximately 2.4088 x 10^24 oxygen atoms.
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What is the relationship among cells, chromosomes, genes, and DNA?
A. DNA is a double helix structure found in the nucleus. Chromosomes straighten out the DNA so the code can be read by genes.
B. Cells contain chromosomes which are made up of genes. Genes are made up of tightly wound strands of DNA.
C. Chromosomes are tightly wound strands of DNA located in cells. Genes are sections of DNA.
D. Tightly wound strands of chromosomes contain genes and are found in cells. The genes we coded sequences nucleotide read by DNA.
Which state of matter has a constant volume, but changes shape?\?
Determine the ph at the equivalence (stoichiometric) point in the titration of 32 ml
An element is made up of _____.
Water is a compound that is made out of two hydrogen atoms and one oxygen atom. Which statement about water is true?
A.
Water is usually a gas like the elements oxygen and hydrogen.
B.
Water has a set of properties that are different from oxygen and hydrogen.
C.
Water has properties that are a blend of the properties of oxygen and hydrogen.
D.
Water is flammable like the elements oxygen and hydrogen.
Answer is: B. Water has a set of properties that are different from oxygen and hydrogen.
For example, boiling point of water is 100°C and oxygen has boiling point of -183°C and hydrogen has boiling point of -253°C.
Another example, at room temperature water is liquid, oxygen and hydrogen are gases.
Water is not flammable, hydrogen anf oxygen are flammable.
Water has polar covalent bonds, oxygen anf hydrogen have nonpolar bonds between atoms.
Answer:
B.
Water has a set of properties that are different from oxygen and hydrogen.
Explanation:
The characteristic properties of these elements are different from those of water. However, hydrogen and oxygen have some common properties. They are both colorless, odorless gases , and they both readily react with other elements—making them "reactive" elements. ... Hydrogen has the lowest density of all the elements. Yee.
Summarize the difference between legal law and scientific law
Answer:
Legal laws are passed by lawmakers in a democratic process that accounts for people's opinions and beliefs.
Scientific laws are discovered and tested by experiments.
Legal laws can be changed if people change their minds.
Legal laws may have exceptions.
on edg
Explanation:
Can someone help me with chemistry?
Write the complete balanced equation for the reaction that occurs when aluminum phosphate (AlPO4) reacts with magnesium chloride (MgCl2) in an aqueous solution.
I got
2AlPO4 (aq) + 3MgCl2 (aq) -> Mg3(PO4)2 (s) + 2AlCl3 (aq)
Is this right?
2AlPO4 ( aq) + 3MgCl2 (aq) -> Mg3(PO4)2 (s) + 2AlCl3 (aq)
Right answer is D
Answer : Yes, the given reaction is the complete balanced equation.
Explanation :
Balanced equation : It is defined as the number of individual atoms of an element present on the reactant side always be equal to the number of individual atoms of an element present on product side. That means the complete balanced equation are those which follows the law of conservation of mass.
When aluminum phosphate reacts with magnesium chloride in an aqueous solution then it gives magnesium phosphate and aluminium chloride as a product.
The complete balanced equation will be,
[tex]2AlPO_4(aq)+3MgCl_2(aq)\rightarrow Mg_3(PO_4)_2(s)+2AlCl_3(aq)[/tex]
By the stoichiometry, 2 moles of aluminium phosphate react with 3 moles of magnesium chloride to give 1 mole of magnesium phosphate and 2 moles of aluminium chloride.
this seems like a complicated one. can someone help me with this question?
If the pH of a 1.00-in. rainfall over 1400miles2 is 3.60, how many kilograms of sulfuric acid, H2SO4, are present, assuming that it is the only acid contributing to the pH?
For sulfuric acid, Ka1 is very large and Ka2 is 0.012.
What is the volume of 120 mg of water?
A. 1.2 dL
B. 120 mL
C. 120 L
D. 1.2 L
What exactly is a reservoir?
A reservoir is a body of water. Towns and municipalities use it to capture water and it then seeps through the ground which cleans it and then it gets filtered into this processing thing and it then gets shipped out in pipes to peoples houses. A reservoir is a broad term though. You can have a reservoir of a variety of things such as a reservoir of oil kind of like a surplus where you can store it but in most cases, people talk about water.
#1: Which type of substance is an electron-pair donor?
A. Arrhenius acid
B. Brønsted-Lowry base
C. Brønsted-Lowry acid
D. Lewis base
***I'm not sure on this one.. :( what do you think? @aaronq :)
A reaction goes essentially to completion. Would you expect the value of K to be large or small?
What is the concentration of the base (NaOH) in the following titration?
A) 3.0 M
B) 142.2 M
C) 3.79 M
D) 3.86 M
Answer: D: 3.86
Explanation:
A typical phase change diagram is shown below. Which of the numbered arrows represent changes where the kinetic energy of the particles increases
In a phase change diagram, the arrows representing an increase in kinetic energy of particles are those showing endothermic transitions: melting, vaporization, and sublimation, which are marked by purple arrows.
Explanation:Phase changes involve a change in kinetic energy of particles. When particles transition from solid to liquid, liquid to gas, or solid to gas, their kinetic energy increases. These changes are represented by the purple arrows in the diagram.
In a phase change diagram, the arrows that represent changes where the kinetic energy of the particles increases are those that indicate heating: from solid to liquid, liquid to gas, and solid to gas. These transitions are endothermic, meaning they require an input of energy from the surroundings. When a substance changes from a solid to a liquid (melting), from a liquid to a gas (vaporization), or directly from a solid to a gas (sublimation), the particles gain kinetic energy, allowing them to move more freely and overcome the intermolecular forces holding them together in a more ordered state.
On the phase diagram, these changes are denoted by the purple arrows. Conversely, transitions from a less ordered state to a more ordered state (freezing, condensation, and deposition), indicated by the green arrows, are exothermic. This means energy is released as particles lose kinetic energy and move into a more stable, ordered state.
A chemical reaction that absorbs energy in the form of heat is considered _____.
The solute that is found in the greatest amount in ocean water is______.
The solute that is found in the greatest amount in ocean water is salt.
MARINE WATER:Marine water body refers to water bodies that contain a great amount of salt. Examples are oceans, seas etc. On the other hand, freshwater contains very little or no amount of salt. They include rivers, lakes, ponds etc. Since ocean water is an example of marine water body, thus, it contains a great amount of salt as a solute.Learn more about oceans at: https://brainly.com/question/11803537
for which compound does 0.256 mole weigh 12.8 g?
A) \(C_2 H_4 O\)
B) \(CO_2\)
C) \(CH_3 Cl\) <--answer
D) \(C_2 H_6\)
E) None of these
can someone tell me why C is the right answer and not E?,
When you balance a chemical reaction, you are making sure that the law of conservation of matter is obeyed?
Explanation:
A balanced chemical reaction is a reaction in which there is equal number of atoms on both reactant and product side. Also, the mass of atoms or compounds present on reactant side equals the mass of atoms or compounds present on product side.
For example, [tex]CaSO_{4} + 2HCl \rightarrow CaCl_{2} + H_{2}SO_{4}[/tex]
Molar mass of [tex]CaSO_{4}[/tex] = 136.14 g/mol
Molar mass of 2[tex]HCl[/tex] = [tex]2 \times 36.46[/tex] g/mol = 72.92 g/mol
Therefore, sum of molar mass of reactants = (136.14 + 72.92) g/mol
= 209.05 g/mol
Molar mass of [tex]CaCl_{2}[/tex] = 110.98 g/mol
Molar mass of [tex]H_{2}SO_{4}[/tex] = 98.07 g/mol
Therefore, sum of molar mass of products = (110.98 + 98.07) g/mol
= 209.05
Therefore, we can see that it is true that when you balance a chemical reaction, you are making sure that the law of conservation of matter is obeyed.
muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware stores as a solution that is 30%(w/w) HCL. What mass of this solution contains 7.5g of HCL?,
The picture depicts particles that are in two different phases (liquid and gas). What would likely happen if the temperature of the particles were decreased?
Answer:
The average kinetic energy of the particles would reduce, subsequently leading to reduced average motion of the particles. If the decrease in temperature persists, the particles eventually change phase and move to a less mobile state of matter than the phase in which they currently are in.
Explanation:
The image for the question is missing and we couldn't find thay online.
But it isn't hard to imagine what the image would be.
It is said to be a picture depicting particles that are in two different phases (liquid and gas).
What would likely happen if the temperature of the particles were decreased?
All particles of matter are said to always be in a constant state of motion (random motion); with the motion very evident in particles in gaseous phase than particles in liquid phase, then particles in the solid phase.
A decrease in temperature for any type of particles in whichever state will result in a reduced kinetic energy of such particles. As the kinetic energy with which the particles moving with constant, random motion is directly proportional to the absolute temperature of the system in which such particles are contained in.
So, a decrease in temperature for both gaseous and liquid particles will result in reduced and reduced kinetic energy and subsequently a reduction in the average motion of the particles.
For the gaseous particles, if the decrease in temperature continues to a point, the gaseous particles lose enough kinetic energy to change phase from gaseous form to a phase (liquid phase) where the motion is more restricted, average motion reduces and kinetic energy of the particles drop too. This is condensation; changing from gaseous phase to liquid phase.
The liquid particles follow a similar course too, only that a continuous decrease in temperature will lead to reduced motion and kinetic energy until the liquid particles 'freeze' by changing phase into the solid phase where the average motion is much more reduced and limited to vibrational motion about a particular fixed point.
Hope this Helps!!!
Predict at least two circumstances (outside influences) that would cause a system in equilibrium to change the concentrations of its reactants or products.,
Changes in temperature and changes in pressure are two circumstances that can cause a system in equilibrium to change the concentrations of its reactants or products.
Explanation:Two circumstances that can cause a system in equilibrium to change the concentrations of its reactants or products are changes in temperature and changes in pressure. Let's take temperature as an example. If the temperature of a system at equilibrium is increased, the reaction will shift in the direction that consumes heat, causing the concentrations of reactants and products to change. Similarly, if the temperature is decreased, the reaction will shift in the direction that releases heat, resulting in changes in concentrations as well.
1.) the attraction between two _____ forms an ionic bond.
A) atoms of the same change
B) cations
C) atoms of the opposite charge
D) metals
2.) what is an ion with a positive charge called?
A) anion
B) cation
C) valence electron
D) covalent ion
1. Ionic form is formed when one or more electrons from the valence shell of an atom (electropositive metal ) are completely transferred to the valence shell of another atom (electronegative non-metal). Ionic bonding is the complete transfer of valence electron(s) between oppositely charged atoms.
For example NaCl (sodium chloride ) is an ionic bond, in which valence electron from Na gets completely transferred to the valence shell of Cl and ionic bond is formed between opposite ions that is Na (positive) and Cl (negative).
[tex] Na^{+}(cation) + Cl^{-}(anion)\rightarrow Ionic bond [/tex]
So option 'C' is correct choice.
2. A neutral atom can lose or gain an electron.
If the neutral atom loses an electron it will become ion with positive charge known as 'Cation'
If the neutral atom gains an electron it will become ion with negative charge known as 'Anion'
So an ion which positive charge is called 'Cation' , option B is correct.
An attraction between two atoms of the opposite charge forms an ionic bond. An ion with a positive charge is known as a cation.
Explanation:The attraction between two atoms of the opposite charge forms an ionic bond. The negatively charged atom (anion) and positively charged atom (cation) experience a strong electrostatic attraction that constitutes an ionic bond. This typically occurs between a metal and nonmetal atom.
An ion with a positive charge is called a cation. Cations are usually metals. For example, when neutral sodium loses one electron, it becomes a positively charged sodium cation (Na+).
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What is the approximate angle between two hydrogen-oxygen bonds in water?
What is the sodium ion concentration in a solution that is 0.175 M in sodium carbonate?
0.0875 M
0.350 M
0.525 M
0.175 M
0.0583 M