Answer:
18 moles O₂
Explanation:
To convert moles of Al₂O₃ to moles O₂, you first need to determine the balanced reaction. Using the reaction coefficients, you can multiply the starting value by the mole-to-mole ratio of the desired substances.
1 Al₂O₃ ---> 3 O₂ + 2 Al
6 moles Al₂O₃ 3 moles O₂
----------------------- x ----------------------- = 18 moles O₂
1 mole Al₂O₃
A gas mixture (40% CH4, 40% CO, and 20% H2) are burned with 300% excess air where the gas and air
entering the combustion chamber at 25 C. What is the theoretical flame temperature achieved in C
How many moles of S2O8 2– react for every mole of S2O3 2– that reacts? Consider the balanced chemical equations for reactions 1 and 2 to calculate the change in concentration of S2O8 2– , [S2O8 2– ], in this trial. (0.5 pts)
For 1 mole of S₂O₃²⁻ 0.5 mole of S₂O₈²⁻ will be used.
What is a balanced Reaction ?A reaction in which the number of atoms in reactants is equal to the number of atoms in the products is called a balanced reaction.
The reaction given in the question is
S₂O₈²⁻ + 2I⁻ ⇄ 2SO₄²⁻ + I₂
I₂ + 2S₂O₃²⁻ ⇄ 2I⁻ + S₄O₆²⁻
Adding the equation will give balance equation
S₂O₈²⁻ + 2I⁻ + 2S₂O₃²⁻ ⇄ 2SO₄²⁻ + 2I⁻ + S₄O₆²⁻
So x moles of S₂O₈²⁻ require 2x of S₂O₃²⁻
for 1 mole of S₂O₃²⁻ 0.5 mole of S₂O₈²⁻ will be used.
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Which is a form of atomic reaction?
Explanation:
atomic reactin is teaction
10.30 Indicate whether each of the following solutions is acidic,
basic, or neutral:
a. [H3O+] = 6.0 × 10-12 M
Answer:
Basic
Explanation:
The pH scale is measured from 0 to 14.
At the pH scale of 7, a solution is neutral.
Any solution above 7 is basic.
Any solution below 7 is acidic.
Because you have been given the hydronium concentration [H₃O⁺], you can find the pH of the solution using the following formula:
pH = -log[H₃O⁺]
pH = -log(6.0 x 10⁻¹²)
pH = 11.22
As you can see, the solution must be basic because the pH lies within the basic range.
WHATS THE CORRECT ANSWER ANSWER ASAP
Solar energy is a non-pollutant, which means it doesn't pollute the environment. so therefore A is the correct answer.
What’s the correct answer answer asap for brainlist
Answer:
Vast Territory
Explanation:
Russia is a very big area. It makes sense that some parts vary in their climate.
Explanation:
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Which of the following summarizes a change that takes palace as solid turns to liquid? A. particles have a decrease in mobility. B. particles move closer together. C. particles become less ordered. D. intermolecular forces between particles become stronger.
Which of the following is a group that can be measured against the experimental group. A. variable. B. responding. C. manipulated. D. contro
The change that takes palace as solid turns to liquid is that particles become less ordered. That is option C.
The group that is measured against the experimental group is control group. That is option D.
What is change of state?Change of state of a substance is the reversible changes that occurs in that substance which may include:
melting, freezing, sublimation, deposition, condensation, and vaporization.When a solid turns into liquid, it becomes less ordered because there is reduction of the intermolecular forces existing between the molecules of the substance.
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Answer: (C) particles become less ordered
Explanation:
Melting - When a solid is heated, it absorbs energy and it melts, turning into a liquid. Boiling - If the liquid is heated, it absorbs more energy and it boils, turning into a gas
Which functional group does the molecule below contain?
HIC H
H=COH
[
Answer:
[tex]D. \ \ \ \text{hydroxyl}[/tex]
Explanation:
Alcohols are organic compounds that are composed of the hydroxyl function group ([tex]-\text{OH}[/tex]), bonded to a carbon atom of an alkyl or a substituted alkyl group. Hence, the functional group of alcohols is the hydroxyl group ([tex]-\text{OH}[/tex]).
According to the International Union of Pure and Applied Chemistry (IUPAC) nomenclature, alcohols are named by changing the -e ending of the name of the parent alkane to the suffix -ol.
For example, the alcohol molecule in the figure demonstrates a hydroxyl group bonded to a methyl group. Therefore, the name of the alcohol is methanol.
1. Balance, to remove harmful NO gas from the jet exhaust!
_ NH3 + _ NO + _ O2 → _ N2 + _ H2O
2. Balance, to remove harmful NO2 gas from the jet exhaust!
_ NH3 + _ NO2 + _ O2 → _ N2 + _ H2O
The balanced equation are as follows:
4NH3 + 6NO → 5N2 + 6H2O8NH3 + 6NO2 → 7N2 + 12H2OHow to balance chemical reaction?A chemical equation is said to be balanced when the number of moles of each element on both sides of the equation are equal.
According to this question, two equations are given to remove harmful NO and NO2 gases from jet exhaust.
The balanced chemical equations are given below:
4NH3 + 6NO → 5N2 + 6H2O8NH3 + 6NO2 → 7N2 + 12H2OLearn more about balanced equation at: https://brainly.com/question/8062886
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what mass of water is produced from 2.5g of glucose?
From the calculation, there are 1.5 g of water produced in the reaction.
What is an equation?An equation shows the chemical transformation that takes place in a reaction vessel. In this case, the equation is; C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O.
Now;
Number of moles of glucose = 2.5g/180 g/mol = 0.014 moles
Since 1 mole of glucose produces 6 moles of water
0.014 moles of glucose produces 0.014 moles * 6 moles/ 1 mole
= 0.084 moles
Mass of water produced = 0.084 moles * 18 g/mol = 1.5 g of water
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the production of olefin
Answer:
Olefin production is a petrochemical process in which saturated hydrocarbons are broken down into smaller, regularly unsaturated ones
What mass of carbon dioxide is produced by the complete combustion of 48.0 g of hexane?
The mass of carbon dioxide produced by the complete combustion of 48.0g of hexane is 147.35g.
How to calculate mass?The mass of a substance can be calculated by using the stoichiometry approach.
The balanced equation of the complete combustion of hexane is as follows:
2C6H14(g) + 19O2(g) → 12CO2(g) + 14H2O(g)
48g of hexane to moles is calculated as:
48g ÷ 86g/mol = 0.56 mol
2 moles of hexane produces 12 moles of CO2
0.56 mol of hexane will produce 0.56 × 12/2 = 3.35 mol
Next, we convert 3.35 moles of CO2 to mass as follows:
3.35 moles × 44g/mol = 147.35g
Therefore, the mass of carbon dioxide produced by the complete combustion of 48.0g of hexane is 147.35g.
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A negatively charged substance is brought near the ion. What will most likely happen and why?
Answer:
The ion will attract the substance because it has more electrons than protons.
Identify the oxidizing and reducing agents in the following: H2S(aq) + Cl2(g) -> S(s) + 2HCI (aq)
The oxidizing and reducing agent in the above redox reaction are hydrogen sulphide (H2S) and Chlorine (Cl) respectively.
What is an oxidizing and reducing agent?An oxidizing agent is any substance that oxidizes, or receives electrons from another substance and as a result, becoming reduced.
On the other hand, a reducing agent is any substance that reduces or donates electrons to another and as a result becomes oxidized.
According to this reaction; H2S(aq) + Cl2(g) -> S(s) + 2HCI (aq)
H2S accepts electrons from Cl2 and becomes reduced to SCl2 donates electrons to H2S and becomes oxidized to HClTherefore, the oxidizing and reducing agent in the above redox reaction are hydrogen sulphide (H2S) and Chlorine (Cl) respectively.
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Tin(IV) sulfide, SnS2, a yellow pigment, can be produced using the following reaction.
SnBr4(aq)+2Na2S(aq)⟶4NaBr(aq)+SnS2(s)
Suppose a student adds 48.1 mL of a 0.478 M solution of SnBr4 to 48.8 mL of a 0.160 M solution of Na2S.
The theoretical yield of [tex]SnS_2[/tex] will be 4.20 grams while the percent yield will be 7.93%
How is yield calculated?From the equation of the reaction, the mole ratio of [tex]SnBr_4[/tex] to [tex]Na_2S[/tex] is 1:2.
Mole of 48.1 mL, 0.478 M [tex]SnBr_4[/tex] = 0.478 x 48.1/100 = 0.023 mols
Mole of 48.8 mL, 0.160 M [tex]Na_2S[/tex] = 0.160 x 48.8/1000 = 0.0078 moles
[tex]SnBr_4[/tex][tex]Na_2S[/tex] is the limiting reactant.
Mole ratio of [tex]SnBr_4[/tex] and [tex]SnS_2[/tex] = 1:1
Equivalent mole of [tex]SnS_2[/tex] = 0.023 moles
Mass of 0.023 noles [tex]SnS_2[/tex]= 0.023 x 182.81 = 4.20 grams
With 0.0333 g of [tex]SnS_2[/tex] recovered, percent yield = 0.333/4.2 x 100 = 7.93%
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Tin(IV) sulfide, SnS2, a yellow pigment, can be produced using the following reaction.
SnBr4(aq)+2Na2S(aq)⟶4NaBr(aq)+SnS2(s)
Suppose a student adds 48.1 mL of a 0.478 M solution of SnBr4 to 48.8 mL of a 0.160 M solution of Na2S.
1) Calculate the theoretical yield of SnS2. ;
2) The student recovers 0.333 g of SnS2. Calculate the percent yield of SnS2 that the student obtained.
Consider 4.00 L of a gas at 365 mmHg and 20. ∘C . If the container is compressed to 2.80 L and the temperature is increased to 30. ∘C , what is the new pressure, P2 , inside the container? Assume no change in the amount of gas inside the cylinder.
This is an exercise in the General Combined Gas Law.
To start solving this exercise, we obtain the following data:
Data:V₁ = 4.00 lP₁ = 365 mmHgT₁ = 20 °C + 273 = 293 KV₂ = 2,80 lT₂ = 30 °C + 273 = 303 KP₂ = ¿?We apply the following formula:
P₁V₁T₂=P₂V₂T₁ ⇒ General formulaWhere:
P₁=Initial pressureV₁=Initial volumeT₂=end temperatureP₂=end pressureT₂=end temperatureV₁=Initial temperatureWe clear for final pressure (P2)
[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{P_{1}V_{1}T_{2}}{V_{2}T_{1}} \ \ \to \ \ \ Formula \end{gathered}$}[/tex]
We substitute our data into the formula:
[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{(365 \ mmHg)(4.00 \not{l})(303 \not{K})}{(2.80 \not{l})(293\not{K})} \end{gathered}$}[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{442380 \ mmHg}{ 820.4 } \end{gathered}$}[/tex]
[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf P_{2}=539.224 \ mmHg \end{gathered}$}}[/tex]
Answer: The new canister pressure is 539.224 mmHg.
{ Pisces04 }Choose two answers
Why does the oil in this soup gather into drops instead of dissolving evenly throughout the surface of the water
Oil drops do not spread across hot water because the surface tension of hot water is lower than that of oil. The water molecules cannot share intermolecular forces with the oil molecules. Thus the correct option is C.
Oil has a higher surface tension than hot soup. It prevents an oil drop from spreading over the heated soup. The surface tension of oil is lower than that of soup when the soup's temperature drops. As a result, the oil drop begins to spread across the soup.
The cohesive force between oil molecules is less than the adhesive force between oil and water molecules. As a result, water molecules and oil molecules do not mix.
Thus the correct option is C.
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The pH of acid solution are given below Choose the weakly and solution a. 12.b 6 c
9
Answer:
Explanation:
If you are looking for a weak acid then answer should be b. 6
pH scale goes from 0-14. 0-6 being acid, 7 being neutral, 8-14 being base.
Strong acids are typically low pH like 0-1, since 6 is not in that range it is weak acid.
Option A and C describe base since they are above 7.
The electron configuration of an element is 1s22s22p63s1.
Describe what most likely happens when an atom of this element comes near an atom having seven valence electrons.
The element is Sodium with an atomic number of 11 and electrovalent bonding takes place when it comes near an atom having seven valence electrons.
What is Electrovalent bonding?This is also referred to as ionic bonding and involves the transfer of atoms of an element to another.
In order for both of them to achieve a stable octet configuration, sodium donates one atom to the element seven valence electrons.
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Answer: A single electron from the outermost shell of this element will move into the outermost shell of the atom with seven electrons.
Explanation:
What are the Result of reaction between , Isoquinoline and alkali KMNO4 ?
Answer:
hydrogen
Explanation:
because it is my own ideal
73 m is equal to how many dm?
the element with the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d5 is
Answer:
Mn
Explanation:
Looks like Mn ( Manganese) from the Periodic Table of elements)
there are 25 electrons......25 protons ....atomic number 25 = Mn
Calculate the mass of 2.11 moles of CF2Cl2. Your answer should be in grams.
4. Which conditions of P, T, and n, respectively, are most ideal?
A) high P, high T, high n
B) low P, low T, low n
C) high P, low T, high n
D) low P, high T, high n
E) low P, high T, low n
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the correct option is option D that is low P, high T, high n. Ideal gas is a hypothetical gas.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Vanderwaal gas can behave as ideal gas at low pressure and high temperature.
Mathematically, the ideal gas equation can be written as
PV=nRT
where, the symbols have the following meaning
P = pressure of ideal gas
V= volume of ideal gas
n =number of moles of ideal gas
T =temperature of ideal gas
R = Gas constant = 0.0821 L.atm/K.mol
The conditions of P, T, and n that are most ideal are low P, high T, high n.
Therefore, the correct option is option D that is low P, high T, high n.
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Please answer this question...
(The question is the attached pic)
Answer: D
Explanation:
When it is an acid, phenolphthalein will be colorless and litmus red.When it is neutral, phenolphthalein will be colorless and litmus will be blue.When it is basic, phenolphthalein will be pink and litmus blue.Platinum is a shiny metal material. How is this matter classified
Answer:
Noble Metals are found as pure metals becuase they are nonreactive and don't conmbine with other elements to form compounds.
Explanation:
Hope it help :)
WHATS THE CORRECT ANSWER ANSWER ASAP FOR BRAINLIST
Answer:
Falling water!Explanation:
Hope this helps
HELP PLEASE!!!
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 has a pH of 8.3 at 77 deg F. 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) + H20 (g) + CO2 (g)
Write the balanced chemical equation. Calculate yield of the decomposition reaction. Make sure to show your work.
Based on the law of conservation of mass, the expected yield of the decomposition reaction is 100% which is equal to the mass of the reactant.
What mass of products are formed when 1 mole of sodium bicarbonate is decomposed by heat?According to the law of conservation of mass, the mass of products formed when 1 mole of sodium bicarbonate is decomposed by heat will be equal to the mass of one mole of sodium bicarbonate.
The balanced equation of the reaction is given below:
2 NaHCO₃ (s) + Heat --> Na₂CO₃ (s) + H₂0 (g) + CO₂ (g)Molar mass of NaHCO₃ = 84. 0 g/mol
Molar mass of Na₂CO₃ = 106 g/mol
Molar mass of H₂0 = 18 g/mol
Molar mass of CO₂ = 44 g/mol
Based on the mole ratio as given in the equation of reaction,
mass of Na₂CO₃ produced = 1/2 * 106 = 53 g
mass of H₂O produced = 1/2 * 18 = 9 g
Mass of CO₂ produced = 1/2 * 44 g/mol = 22 g
Total mass of products = 53 + 9 + 22 = 84.0 g
Therefore, the yield of the decomposition reaction is equal to the mass of the reactant.
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Skunks have scent glands that allow the animals to give off an unpleasant odor when they are frightened or uncomfortable.
What function do the scent glands have?
A.
They act as a propulsion system to propel the skunk away from predators.
B.
They attract other skunks to mate with.
C.
They protect skunks against predators.
D.
They kill insects and small animals for the skunks to eat.
Answer:
Some use them to mark their territory, while others use them as skunks do — as a defense mechanism to protect them from predators. Some animals are even named for their odor-producing ability.29 Mar 2021
Explanation:
Skunks have two glands, one on each side of the anus. These glands produce the skunk's spray, which is a mixture of sulfur-containing chemicals such as thiols (traditionally called mercaptans), which have an offensive odor. The thiols also make their spray highly flammable.
Sodium tungstate is Na₂WO4. Therefore, the formula for gold(III) tungstate is
Explanation:
Na2WO4 2Na+ + wo4 2-
2Au3+ + 3wo42- Au2(WO4)3