Answers
Answer:
In this reaction, \(6\; \rm mol\) of \(\rm N_2\) will react with \(18\; \rm mol\) of \(\rm H_2\).
Explanation:
In the balanced equation for this reaction, the ratio between the coefficient of \(\rm H_2\) and \(\rm N_2\) is \(3 : 1\). That is: \(n(\mathrm{H_2}) : n(\mathrm{N_2}) = 3:1\). That's the same as saying that for every one mole of \(\rm N_2\) consumed, three moles of \(\rm H_2\) will be consumed.
Rewrite this ratio as a fraction:
\(\displaystyle \frac{n(\mathrm{H_2})}{n(\mathrm{N_2})} = \frac{3}{1}\).
Take the reciprocal of both sides to obtain:
\(\displaystyle \frac{n(\mathrm{N_2})}{n(\mathrm{H_2})} = \frac{1}{3}\).
It is given that \(18\; \rm mol\) of \(\rm H_2\) was consumed; in other words, \(n(\mathrm{H_2}) = 18\; \rm mol\). The question is asking for \(n(\mathrm{N_2})\), the number of moles of \(\rm N_2\) required. Apply this ratio:
\(\begin{aligned}n(\mathrm{N_2}) &= n(\mathrm{H_2}) \cdot \frac{n(\mathrm{N_2})}{n(\mathrm{H_2})}\\ &= 18\; \rm mol \times \frac{1}{3} = 6\; \rm mol\end{aligned}\).
Hence the conclusion: in this reaction, it will take (at least) \(6\; \rm mol\) of \(\rm N_2\) to react with \(18\; \rm mol\) of \(\rm H_2\).
Related Questions
60 points!! Look at picture please don’t troll
Answers
what's the molecular geomrtry of SiCI4
Answers
Answer:
Tetrahedral
Explanation:
The molecular geometry of SiCl₄ is a tetrahedral shape. According to the VESPR molecular theory, the compound has a shape of a tetrahedron.
In this compound there are four bond pairs and no lone pairs. The total electron pair is 4 . The valence shell electron pair repulsion theory uses the total number of electrons pairs surrounding the central atom of a specie.explain the statement potash alum is a double salt using the chemical formula of alum
Answers
Potash alum, represented by the chemical formula KAl(SO4)2·12H2O, is a double salt because it consists of two different salts, potassium sulfate (K2SO4) and aluminum sulfate (Al2(SO4)3), combined together. It forms a unique crystalline structure with 12 water molecules incorporated in its composition.
Potash alum is a type of alum that is commonly used in dyeing and water purification applications. The chemical formula for alum is KAl(SO4)2·12H2O.
The term "double salt" refers to the fact that the compound is made up of two different types of ions that are combined together.
In the case of potash alum, the two different types of ions are potassium ions (K+) and aluminum ions (Al3+). These two ions are combined together in a 1:1 ratio to form a complex ion, KAl(SO4)2, which is then combined with 12 water molecules to form the final compound, KAl(SO4)2·12H2O.
The term "double salt" is used to describe this type of compound because it contains two different types of cations (positive ions) that are combined together to form a single crystal lattice structure.
The two different cations are held together by ionic bonds, which are relatively strong and help to give the compound its characteristic properties.
Potash alum is a particularly useful compound because it has a number of important properties that make it useful in a variety of applications.
For example, it is highly soluble in water, which makes it a good choice for use in water purification applications.
It is also relatively stable and non-toxic, which makes it safe to use in a variety of different settings.
Finally, it has a number of useful physical properties, such as its ability to form crystals that are highly reflective and have a characteristic octahedral shape.
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I need help I don’t understand this is hitting
Answers
Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.
In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.
In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.
Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
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How many moles of gold are there in 3.73 x 10^24 atoms of gold?
Answers
Answer:
6.2moles of Gold
Explanation:
To solve this problem, we are going to use the mole concept approach.
Given that;
Number of atoms of gold is 3.73 x 10²⁴ atoms
Now;
In 1 mole of any substance, we have 6.02 x 10²³ atoms;
So;
If there 6.02 x 10²³ atoms in 1 mole of any substance;
3.73 x 10²⁴ atoms will contain \(\frac{3.73 x 10^{24} }{6.02 x 10^{23} }\) = 6.2moles of Gold
which of the following molecules would you expect to have a dipole moment of zero? a,CH2 Ch3
bH2C=0
cCH2cl
dNH3
Answers
Answer: The molecule \(CH_{3}-CH_{3}\) is expected to have a dipole moment of zero.
Explanation:
The product of magnitude of the charge calculated in electrostatic units is called dipole moment.
Formula for dipole moment is as follows.
Dipole moment = Charge (in esu) \(\times\) distance (in cm)
Non-polar molecules have zero dipole moment.
For example, \(CH_{3}-CH_{3}\) is a non-polar molecule so its dipole moment is zero.
\(H_{2}C=O\) is a polar molecule so it will have dipole moment.
\(CH_{2}Cl_{2}\) is a polar molecule so it will have dipole moment.
\(NH_{3}\) has nitrogen atom as more electronegative than hydrogen atom. So, net dipole moment will be in the direction of nitrogen atom.
Thus, we can conclude that the molecule \(CH_{3}-CH_{3}\) is expected to have a dipole moment of zero.
A student sets up the investigation shown below. The movement of colored water through the gravel best models —
Answers
A student sets up the investigation shown below. The movement of colored water through the gravel best models groundwater.
What is a groundwater?Groundwater is water that is located beneath the surface of the Earth in soil pore spaces and in the fractures of rock formations. It originates from precipitation that percolates into the soil and moves downward to the water table, which is the boundary between the unsaturated and saturated zones of soil.
Groundwater can be a major source of drinking water and is also used for irrigation, industry, and other purposes. It can be accessed through wells drilled into the ground, and it often moves very slowly through the subsurface, sometimes taking decades or even centuries to replenish.
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The complete question:
A student sets up the investigation shown below. The movement of colored water through the gravel best models —
The atomic number represents what?
atomic mass
number of protons and electrons
number of neutrons and protons
chemical symbol
Answers
Answer:
Number of protons and electrons
Explanation:
The atomic number always has the same number as the number of protons and electrons in the element
What's the electron configuration of an N-3 ion?
Question 3 options:
A)
[Ar]
B)
[He]
C)
[H]
D)
[Ne]
Answers
N means nitrogen
Lets look at the EC
\(\\ \sf\bull\longmapsto 1s^22s^22p^3\)
-3 means it has got 3 electrons\(\\ \sf\bull\longmapsto 1s^22s^22p^6\)
\(\\ \sf\bull\longmapsto [Ne]\)
Hello How do you do?
What is logic bomb and time bomb?
Answers
Answer:
A logic bomb and a time bomb are both types of malicious software or code that are designed to cause harm to a computer system or network. Here's a brief explanation of each:
Logic Bomb:
A logic bomb is a piece of code or software that is intentionally inserted into a system to execute a malicious action when specific conditions are met. It remains dormant until triggered by a predefined event or circumstance, such as a specific date, time, or user action. Once triggered, the logic bomb may perform various harmful actions, such as deleting files, corrupting data, or disrupting system functionality. The purpose of a logic bomb is often to cause damage or to gain unauthorized access to a system.
Time Bomb:
A time bomb is similar to a logic bomb, but it is specifically designed to activate or execute its malicious payload at a certain date or time. It is usually programmed to remain undetected until the predetermined time arrives. The time bomb can be set to trigger after a specific time period or on a particular date, at which point it may carry out destructive actions. Time bombs can be used by attackers to target specific events or to coordinate an attack to occur simultaneously across multiple systems.
Both logic bombs and time bombs are considered forms of malicious code or malware and are used with malicious intent to disrupt, damage, or compromise computer systems or networks. They can be extremely harmful, and it is important to have strong security measures, such as antivirus software and regular system updates, to protect against such threats.
Explanation:
can violance be justified when words fail to bring social justice
Answers
If words faill to bring social justice then sometimes violence can be justified.
b. How many kJ of heat are needed to completely vaporize 50.0g of water at 100°C? [Ans:113. kJ]
Answers
The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.
Heat of vaporization of waterThe heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:
q = m x Hv
where:
q is the heat needed in joules (J)m is the mass of water in grams (g)Hv is the heat of vaporization of water which is approximately 40.65 kJ/mol at standard temperature and pressure.First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:
moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol
Thus:
q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ
In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.
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Introduction
Sodium bicarbonate, NaHCO3 (MW 84.007 g/mol), is commonly known as baking soda. Sodium bicarbonate is a solid crystalline and
appears as a white powder. Sodium bicarbonate can be easily be converted to sodium carbonate, Na2CO3 (MW 105.988 g/mol) by
decomposition to produce H₂O and CO₂. This can be accomplished by placing the sample in the oven at 176 deg F.
Unbalanced chemical equation: NaHCO3 (s) + heat-> Na₂CO3 (s)+ H₂O(g) + CO₂(g)
Demonstration Video: [Click here for video]
Percent yield - (actual yield/ theoretical yield) x 100
Purpose
This assignment is designed to teach students about decomposition reactions and determine the percent yield. At the end of the experiment, the
student will have a better understanding of how this assignment will benefit their learning.
Task
-Write a balanced chemical equation
- Calculate the percent yield of the decomposition reaction (Must show your work)
Answers
We can actually deduce here that the purpose of this assignment is to teach students about decomposition reactions and allow them to determine the percent yield.
What is the experiment all about?By performing the experiment, students will gain a better understanding of the concepts involved and how they relate to their overall learning.
The specific focus of this assignment is the decomposition of sodium bicarbonate (NaHCO3) to produce sodium carbonate (Na2CO3), water (H2O), and carbon dioxide (CO2). The unbalanced chemical equation for this reaction is:
NaHCO3 (s) + heat -> Na2CO3 (s) + H2O (g) + CO2 (g)
To understanding the reaction itself, students will also learn about the concept of percent yield. Percent yield is a measure of the efficiency of a chemical reaction and is calculated by dividing the actual yield of the desired product by the theoretical yield, then multiplying by 100.
This calculation allows students to assess how well the reaction proceeds in terms of producing the expected amount of sodium carbonate.
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129.13 mL of a 112.9 mM solution of NH4l is added to a 105.31 mL solution of 0.87 M Mgl2. What
is the final concentration of I ions in the resulting solution? Express your answer in units of
molarity using at least three significant figures.
Answers
The final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.
To determine the final concentration of I ions in the resulting solution, we need to consider the stoichiometry and volumes of the solutions being mixed.Given:
Volume of NH4l solution = 129.13 mL
Concentration of NH4l solution = 112.9 mM = 0.1129 M (converting from millimolar to molar)
Volume of Mgl2 solution = 105.31 mL
Concentration of Mgl2 solution = 0.87 M
First, we need to determine the moles of NH4l and Mgl2 in their respective solutions:
Moles of NH4l = Volume of NH4l solution * Concentration of NH4l solution
Moles of NH4l = 0.12913 L * 0.1129 M = 0.01459 moles NH4l
Moles of Mgl2 = Volume of Mgl2 solution * Concentration of Mgl2 solution
Moles of Mgl2 = 0.10531 L * 0.87 M = 0.09157 moles Mgl2
Next, we determine the limiting reagent, which is the reactant that is completely consumed and determines the maximum amount of product formed. In this case, the limiting reagent is NH4l because it has fewer moles than Mgl2.
The balanced chemical equation for the reaction between NH4l and Mgl2 is:
2 NH4l + Mgl2 → 2 NH4+ + MgI2
From the balanced equation, we can see that for every 2 moles of NH4l, we get 1 mole of MgI2.
Since the moles of NH4l is the limiting reagent, it will be completely consumed, and the moles of MgI2 formed will be half of the moles of NH4l.
Moles of MgI2 = 0.01459 moles NH4l * (1 mole MgI2 / 2 moles NH4l) = 0.007295 moles MgI2
Finally, we calculate the final concentration of I ions in the resulting solution:
Volume of resulting solution = Volume of NH4l solution + Volume of Mgl2 solution
Volume of resulting solution = 0.12913 L + 0.10531 L = 0.23444 L
Final concentration of I ions = Moles of MgI2 / Volume of resulting solution
Final concentration of I ions = 0.007295 moles / 0.23444 L = 0.0311 M
Therefore, the final concentration of I ions in the resulting solution is approximately 0.0311 M, expressed with three significant figures.
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Determine the enthalpy of reaction for HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) 2NaCl(s) + H₂O(l) → 2HCl(g) + Na₂O(s) ∆H° = -507.1 kJ/mol NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol 2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol
Answers
the enthalpy of reaction for HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) 2NaCl(s) + H₂O(l) → 2HCl(g) + Na₂O(s) ∆H° = -507.1 kJ/mol NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol 2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol the enthalpy of reaction for the given reaction is -39.1 kJ/mol.
We can use the given reactions and their enthalpies to find the enthalpy of reaction for the given equation.
The given equation is:
HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)
We can break down this reaction into several steps using the given reactions as follows:
Na₂O(s) + 2HCl(g) → 2NaCl(s) + H₂O(l) (reverse of the given reaction)
∆H° = +507.1 kJ/mol (reverse the sign of given reaction)
2NaCl(s) + H₂O(l) → Na₂O(s) + 2HCl(g)
∆H° = -507.1 kJ/mol (given reaction)
NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s)
∆H° = -427.0 kJ/mol (given reaction)
2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l)
∆H° = +34.02 kJ/mol (given reaction)
NO(g) + NO₂(g) → N₂O(g) + O₂(g)
∆H° = -43.01 kJ/mol (given reaction)
Now, we can add these equations and their enthalpies to get the overall enthalpy of the given reaction:
HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)
H₂O(l) + 2NaCl(s) → Na₂O(s) + 2HCl(g) ∆H° = -507.1 kJ/mol
Na₂O(s) + NO(g) + NO₂(g) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol
2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol
NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol
HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) ∆H° = -39.1 kJ/mol
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An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
Answers
An airplane flew 3043 km from Houston to Seattle in 5.5 hours. What was the average speed, in m/s rounded to the nearest hundredth, of the airplane from Houston to Seattle?
The answer is 553
Answer:
553
Explanation:i did this question today and it was right!
The basic unit of structure and function of living things is the .
nucleus
cell
tissue
membrane
Answers
Answer &
Explanation:
eukaryotic: Having complex cells in which the genetic material is contained within membrane-bound nuclei. cell: The basic unit of a living organism, consisting of a quantity of protoplasm surrounded by a cell membrane, which is able to synthesize proteins and replicate itself.
therefore it is cell
How much water has to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M?
Answers
Approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.
To find the amount of water that needs to be evaporatedThe relationship between the initial and final concentrations and volumes must be taken into account.
Given: Initial concentration \((C^1) = 1 M Initial volume (V^1) = 250 mL\)
\((C^2) = 3 M final concentration\)
We can use the equation:
\(C^1 * V^1 = C^2 * V^2\)
Where:
\(V^2\)is the final volume of the solution
Rearranging the equation to solve for V2:
\(V^2 = (C^1 * V^1) / C^2\)
Substituting the given values:
\(V^2 = (1 M * 250 mL) / 3 M\)
\(V^2 = 250 mL / 3\)
\(V^2\) ≈ \(83.33 mL\)
To find the amount of water that needs to be evaporated, we subtract the final volume from the initial volume:
Amount of water to be evaporated = \(V^1 - V^2\)
Amount of water to be evaporated = 250 mL - 83.33 mL
Amount of water to be evaporated ≈ 166.67 mL
Therefore, approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.
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What would humans need to live on another planet?
Answers
Answer:
In its astrobiology roadmap, NASA has defined the principal habitability criteria as "extended regions of liquid water, conditions favorable for the assembly of complex organic molecules, and energy sources to sustain metabolism". In August 2018, researchers reported that water worlds could support life.
How many F atoms are in 5.54 g of F2?
Answers
The number of the atoms in the sample is 1.8 * 10^23 atoms.
What is the number of the Atoms?The mole is a unit of measurement in chemistry used to express amounts of a chemical substance.
The mole is used to determine the number of atoms, molecules, or other entities in a given sample of a substance.
We have to look at the concept of the mole in this question.
We know that to obtain the number of moles of the substances we have;
5.54 g /38 g/mol
= 0.15 moles
Then we would have that from the Avogadro's law;
0.15 moles * 6.02 * 10^23 * 2
= 1.8 * 10^23 atoms
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11. The pH values of some solutions are given below pH 14.0 1.0 L 8.0 N 6.5 n P 7.0 Solution M Z (a) Identify the solution with the lowest concentration of hydrogen ion. Give reason for your (1mk) answer
Answers
Answer: 14.0
Explanation: 14.0 is a base. The more basic, the less hydrogen ion concentration.
PLEASE HELP MEEEE
What type of sunscreen can best reduce risk of melanoma? SPF 4 used daily SPF 4 used once a month SPF 15 or higher used daily SPF 15 or higher used once a month -this is science-
Answers
Answer:
spf 30
Explanation:
its a good sunscreen btw
this happens in massive star which convert hydrogen into helium?
Answers
Answer:
nucleosynthesis. A star's mass determines what other type of nucleosynthesis occurs in its core (or during explosive changes in its life cycle).
other m Ammonium nitrate decomposes to nitrogen(1) oxide and water. 9. Some oxides of nitrogen are atmospheric pollutants. and oxygen. Revision Exercise When compound X is heated, a red-brown gas is evolved and a yellow residue is left on cooling. Name: (i) The red-brown gas. (ii) The ions present in the residue. (ui) Compound X.
Answers
We can determine the following based on the provided information:
Metal nitrate A is a compound that, when heated, transforms into colourless gas, brown gas B, and a metal oxide with a yellowish brown hue. B. C: Colourless petrol C. B: Brown petrol C. D: Compound D, a yellow precipitate produced by the reaction of potassium iodide with an aqueous solution of compound A.
We may deduce that A is probably lead nitrate (Pb(NO3)2) because lead is frequently used in soldering alloys and the metal contained in A is utilised in an alloy for soldering purposes.
Identifications:
Lead nitrate, or Pb(NO3)2,
N2O: Nitrogen dioxide
B: Carbon (CO)
D: PbI2, or lead iodide.
Thus, this can be concluded regarding the given scenario.
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Your question seems incomplete, the probable complete question is:
A metal nitrate A on heating gives a yellowish brown coloured metal oxide along with brown gas B and a colourless gas C. An aqueous solution of A on reaction with potassium iodide forms a yellow precipitate of compound D. Identify A, B, C and D. Also, identify the types of reactions taking place. Metal present in A is used in an alloy which is used for soldering purposes.
66.41 g of Copper [Cu] are combusted with 8.56g of Oxygen [O] to produce a
compound. What is the empirical formula of the compound?
Answers
The empirical formula of the compound : Cu₂O
Further explanationGiven
66.41 g Cu
8.56 g O
Required
The empirical formula
Solution
1. Find mol
Cu(Ar 63.5 g/mol)mol = mass : Ar
mol = 66.41 : 63.5
mol = 1.046
O(Ar=16 g/mol)mol = 8.56 : 16
mol = 0.535
2. mol ratio
Cu : O (divide by smallest mol⇒0.535) :
\(\tt \dfrac{1.046}{0.535}\div \dfrac{0.535}{0.535}=2\div 1\)
100 POINTS!!!
What is the average rate of the reaction over the entire course of the reaction?
1.6 × 10−3 (?)
1.9 × 10−3 (?)
2.0 × 10−3 (X)
2.2 × 10−3 (X)
Answers
Answer:
b. 1.9 × 10-3
Explanation:
Answer:1.9x10-3
Explanation:
average
What is the mass of a rectangular piece of copper 24.4cm x 11.4 cm x 7.9 cm? The density of copper is 8.92g/cm3.
Answers
The mass of the rectangular piece of copper is 18,869 g (approx).In conclusion, the mass of a rectangular piece of copper with dimensions 24.4cm x 11.4 cm x 7.9 cm and a density of 8.92 g/cm³ is 18,869 g (approx.).
The given dimensions of the rectangular piece of copper are:Length = 24.4 cmWidth = 11.4 cmHeight = 7.9 cmThe formula to calculate the mass of an object is given by;
Mass = Density x Volume
Here, the density of copper is given as 8.92 g/cm³.
Therefore, the first step is to calculate the volume of the rectangular piece of copper.The formula to calculate the volume of a rectangular object is given by:
Volume = Length x Width x Height
So,Volume = 24.4 cm x 11.4 cm x 7.9 cm= 2115.432 cm³Now we will use the mass formula:
Mass = Density x Volume= 8.92 g/cm³ x 2115.432 cm³= 18,869.27824 g= 18,869 g (approx.)
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write a balanced chemical equation (smallest integer coefficients possible) for the reaction between an acid and a base that leads to the production of mg(ch3coo)2(aq). be sure to specify states such as (aq) or (s). give the names of the acid, the base, and the salt.
Answers
The balanced chemical equation for the reaction between an acid, acetic acid and base, magnesium hydroxide leads to the production of Mg(CH₃COO)₂(aq) is :
2CH₃COOH(aq) + Mg(OH)₂(s) ----> Mg(CH₃COO)₂(aq) + 2H₂O(l)
The reaction with the acid and base is below :
CH₃COOH(aq) + Mg(OH)₂(s) ----> Mg(CH₃COO)₂(aq) + H₂O(l)
acetic acid magnesium magnesium water
hydroxide acetate
reactant product
C 2 4
H 6 8
O 4 5
Mg 1 1
the reaction is not balanced the equation multiply by 2 in CH₃COOH and 2 in H₂O , we get
2CH₃COOH(aq) + Mg(OH)₂(s) ----> Mg(CH₃COO)₂(aq) + 2H₂O(l)
This is the balanced chemical equation .
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How many kilojoules are released when 2.60 mol of H2O2 reacts?
Answers
On the decomposition of 2.60 moles of hydrogen peroxide, 254.8 KJ energy will be released.
What is a decomposition reaction?A decomposition reaction can be defined as a reaction in which a chemical compound breaks down into two or more simple compounds. The general form to express a decomposition reaction is:
AB → A + B
Most decomposition reactions accept energy in the form of heat, radiation, or electricity. The decomposition reaction of hydrogen peroxide is shown below:
2H₂O₂(l) → 2H₂O (l) + O₂(g) ΔH = - 196 KJ/mol
2 moles of hydrogen peroxide decomposes energy released = 196 KJ
2.60 of H₂O₂ decomposes energy released = 196 ×2.60/2 = 254.8 KJ
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Calculate the moles of ammonia present in a 7.686 g sample of ammonia, which has a molar mass of 17.030 g/mol. Type answer:
Answers
The number of moles of ammonia present in a 7.686 g sample of ammonia, which has a molar mass of 17.030 g/mol is 0.45 moles.
HOW TO CALCULATE NUMBER OF MOLES:
The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass. That is;no. of moles = mass (g) ÷ molar mass (g/mol)According to this question, there are 7.686g of ammonia sample and has a molar mass of 17.030 g/mol. The number of moles is as follows. no. of moles = 7.686g ÷ 17.030g/molno. of moles = 0.45 moles. Therefore, the number of moles of ammonia present in a 7.686 g sample of ammonia, which has a molar mass of 17.030 g/mol is 0.45 moles.Learn more about how to calculate number of moles at: https://brainly.com/question/11907810?referrer=searchResults