Two common liquids, water and peroxide, are both formed with atoms of hydrogen and oxygen. If both substances discussed above are made of hydrogen and oxygen, how is the make-up of the two substances different?.
Answers
Water and peroxide are two common liquids that are formed with atoms of hydrogen and oxygen. Both of these substances are made of hydrogen and oxygen, but the makeup of the two substances is different.Water is a chemical compound that consists of two atoms of hydrogen and one atom of oxygen, known as H2O.
Hydrogen bonding is the force that binds hydrogen and oxygen atoms together in water. Water has a very high heat capacity, making it an excellent conductor of heat.Peroxide is a chemical compound that is composed of two hydrogen atoms and two oxygen atoms, known as H2O2. Peroxide is a very strong oxidizer, and it decomposes into water and oxygen when heated. Peroxide is an effective disinfectant, and it is commonly used as a bleaching agent. Peroxide is also used as a rocket fuel in spacecraft.The main difference between water and peroxide is their chemical makeup. Water has two hydrogen atoms and one oxygen atom, while peroxide has two hydrogen atoms and two oxygen atoms. This difference in the number of oxygen atoms gives peroxide its unique properties, such as its strong oxidizing power.
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Related Questions
For the process 2SO2(g) + O2(g) Right arrow. 2SO3(g), Delta.S = –187.9 J/K and Delta.H = –198.4 kJ at 297.0 K are known. What is the entropy of this reaction? Use Delta.G = Delta.H – TDelta.S.
Answers
Answer:
The entropy of this reaction (ΔS) = -187.9 J/K
Explanation:
.Step : Data given
ΔS = -187.9 J/K
ΔH = -198.4 kJ
T = 297.0 K
Step 2: The balanced equation
2SO2(g) + O2(g) → 2SO3(g)
Step 3: Calculate the entropy
ΔG = ΔH - TΔS
⇒ΔG = the gibbs free energy
⇒ΔH = the change in enthalpy of the reaction = -198.4 kJ
⇒with T = the temperature = 297.0 K
⇒with ΔS = the change of entropy = -187.9 J/K
ΔG = -198400 kJ -297*(-187.9kJ/mol)
ΔG = -198400+55806.3
ΔG = - 142593.7 kJ = the gibbs free energy
The entropy of this reaction (ΔS) = -187.9 J/K
Answer:
C. -187.9 J/K
Explanation:
Entropy is just ΔS, which it gives you in the question as -187.9 J/K.
I have 7.83x10^-2 helium how many grams he do have?
Answers
Answer:
It depends on the missing unit.
Explanation:
What is meant by "7.83x10^-2 helium?" Helium atoms, kg, cm^3, ? Without the unit, the statement is meaningless. If the unit is kg, then:
(7.83x10^-2 kg helium)*(1,000g/1kg) = 78.3 grams He
piper rockelle or gavin magnus
Answers
Answer:
Gavin magnus
Explanation:
I don't really care tho
What is the pKa for the N-terminal amino group of the peptide K-T-I-D? A. 8.14 B. 11.96 C. 12.32 D. 10.19
Answers
The pKa for the N-terminal amino group of the peptide K-T-I-D is 10.19. The correct option is D.
This can be calculated by taking into account the individual pKa values of each amino acid residue, which are: K = 9.74, T = 10.5, I = 10.76, and D = 3.9.
The pKa of the N-terminal amino group of a peptide can be calculated using the Henderson-Hasselbalch equation:
pKa = pH + log([A-]/[HA])
where pH is the pH of the solution, [A-] is the concentration of the conjugate base (deprotonated form) of the amino group, and [HA] is the concentration of the protonated form of the amino group.
In the case of the peptide K-T-I-D, we can assume that the N-terminal amino group has a pKa value of around 9.7. Therefore, at a pH below 9.7, the amino group will be mostly protonated, and at a pH above 9.7, the amino group will be mostly deprotonated.
The N-terminal amino group of a peptide is a primary amine group, which can act as a weak base and accept a proton (H+) to become a positively charged ion. The pKa value of the N-terminal amino group varies depending on the specific peptide sequence and its environment. However, a commonly used approximation is to assume that the pKa value of the N-terminal amino group is around 9.7.
Therefore, the closest answer option to this approximation is option D, 10.19.
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Which diagram shows a pair of electrons that have opposite spins? A box contains an upward pointing and a downward pointing arrow. A box contains an upward pointing arrow.A box contains a downward pointing arrow. A box contains an upward pointing arrow.A box contains an upward pointing arrow. A box contains two upward pointing arrows.
Answers
Answer:
The answer is A
Explanation:
Need quickly!
what is the name of pb(no3)2? explain how you determined the bond type and the steps you used to determine the naming convention for the compound.
Answers
The name of pb(no3)2 is Lead(II) nitrate.
Type of bond:pb(no3)2 is an ionic compound.
How to name ionic compound?
The name of an ionic compound is written as its cation followed by anionThe charge of cation should be written in Roman lettersThe net charge of ionic compounds is generally zeroName of pb(no3)2:
The charge of nitrate ion NO3 is -1. To find the charge of lead, we'll take it as x. Hence,
x+2(-1)=0
x=2
The charge of lead cation in this ionic compound is calculated as +2.
Therefore the name of pb(no3)2 is confirmed as Lead(II) Nitrate.
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The number of shovels and cost per 1000 kg for
Ca(OH)2
Answers
Answer:500
Explanation:
A solution is prepared by dissolving 8.50 g of c6h12o6 in 4.15 g of cyclohexane. what is the % mass of c6h12o6 in the new solution? round your answer to 1 decimal places.
Answers
The % mass of C6H12O6 in the new solution is approximately 67.2%.
We can calculate the mass percentage of C6H12O6 in the new solution using the following formula:
% mass = (mass of C6H12O6 / total mass of solution) x 100%
First, we need to calculate the total mass of the solution by adding the mass of C6H12O6 and the mass of cyclohexane:
total mass of solution = 8.50 g + 4.15 g = 12.65 g
Next, we can calculate the mass percentage of C6H12O6 in the solution:
% mass = (8.50 g / 12.65 g) x 100% ≈ 67.2%
Therefore, the % mass of C6H12O6 in the new solution is approximately 67.2%.
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The vat is made of metal. Why would it matter that the material from which the vat is made is metal ?
Answers
Answer:
Due its storing and holding ability.
Explanation:
It matter that the material from which the vat is made is metal because this vat is used for storing and holding liquids. Vat is a large container or tank that is used for storing or holding liquids in industrial sector. This vat is made of metal which increases its strength and durability. If the vat is made of wood or plastic so it can't hold huge amount of liquid or chemical due to its weak material so that's why it matters that the substance from which the vat is made is metal or not.
In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online school sucks
Answers
In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.
The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
What is Kinetic Energy ?The kinetic energy of an object is the energy that it possesses due to its motion and is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
When we move the bob of the pendulum to start the movement you "charge" it with Potential Energy (Gravitational) by varying its position (height) in relation to the ground.
When we release the bob it moves towards the equilibrium position changing Potential into Kinetic Energy (through the movement with Velocity).
At the equilibrium point the bob doesn't stop but goes on up to the same height "re-charging" it with Potential Energy.
The sum of Kinetic (K) and Potential (U) Energy (called Mechanical Energy is always the same:
E = K + U = constant
Therefore, The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
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I NEED HELP PLS ILL GIVE BRAINLY
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The correct statement about Dunite is that it is formed when magma cooled slowly below the ground; Option B.
What are rocks?Rocks are large aggregates of minerals that occur in the earth's crusts as a result of the cooling ad solidification of molten magma or the deposition of the remains of dead organic matter which changes from pressure ad heat.
There are three types of rocks, and they are:
Igneous rocks - formed by the cooling of molten magma e.g. Dunite, a light yellowish-green, intrusive igneous rockSedimentary rocks - formed from the remains of dead organic matterMetamorphic rocks - are formed from changes that occur in sedimentary rocks.Learn more about igneous rocks at: https://brainly.com/question/18297174
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When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown?CIO3 +NO 2-CI +Water appears in the balanced equation as aNO3How many electrons are transferred in this reaction?(reactant, product, neither) with a coefficient of(Enter 0 for neither.)
Answers
Answer:
Explanation:
Here, we want to balance the given equation in acidic conditions
We start by breaking the equation into half equations
We have that as:
\(\begin{gathered} ClO_3^-\text{ }\rightarrow\text{ Cl}^- \\ NO_2\rightarrow\text{ NO}_3^- \end{gathered}\)The next step is to balance other elements aside from oxygen and hydrogen
This is already done
The next step is to balance oxygen by adding H2O:
\(\begin{gathered} ClO_3^-\text{ }\rightarrow\text{ Cl}^-\text{ +3 H}_2O \\ NO_2\text{ + H}_2O\text{ }\rightarrow NO_3^-\text{ } \end{gathered}\)The next step is to balance hydrogen by adding the hydrogen ion
We have that as:
\(\begin{gathered} ClO_3^-\text{ + 6H}^+\text{ }\rightarrow Cl^-\text{ + 3H}_2O \\ NO_2\text{ + H}_2O\text{ }\rightarrow\text{ NO}_3^-\text{ + 2H}^+ \end{gathered}\)The next step here is to balance the excess ions by adding electrons:
\(\begin{gathered} ClO_3^-\text{ + 6H}^+\text{ + 4e}^-\rightarrow\text{ Cl}^-\text{ + 3H}_2O \\ NO_2\text{ + H}_2O\text{ }\rightarrow\text{ NO}_3^-\text{ + 2H}^+\text{ + e}^- \end{gathered}\)Now, we need to cancel out the electrons.
We multiply equation ii by 4:
\(\begin{gathered} ClO_{3\text{ }}^-\text{ + 6H}^+\text{ + 4e}^-\text{ }\rightarrow\text{ Cl}^-\text{ + 3H}_2O \\ 4NO_2\text{ + 4H}_2O\text{ }\rightarrow\text{ 4NO}_3^-\text{ + 8H}^+\text{ + 4e}^- \end{gathered}\)Now, let us merge the two equations:
\(ClO_3^-\text{ + 4NO}_2\text{ + H}_2O\text{ }\rightarrow\text{ Cl}^-\text{ + 4NO}_3^-\text{ + 2H}^+\)A compound was found to contain 90.6% lead (Pb) and 9.4% oxygen. What is the empirical formula for this compound?
Answers
Answer:
the answer is 47.9 and ik because I just had that question
The empirical formula of the compound is O₄Pb₃.
What is the empirical formula?
An Empirical system is the chemical system of a compound that offers the proportions of the elements gifted within the compound however not the real numbers or arrangement of atoms. This would be the lowest complete variety ratio of the elements within the compound.
Amount of lead (Pb) = 90.6%
⇒and amount of oxygen = 9.4%
taking the whole number ratio
o = 4
Pb = 3
∴ ⇒O: Pb=4:3
O4Pb3 answer.
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Question 3 of 10
Which of the following elements shows little reactivity?
A. Potassium (K)
B. Sulfur (S)
C. Fluorine (F)
O D. Argon (Ar)
Answers
Answer: Correct answer is
Ar- Argon
Explanation:
A P E X :)
how many bonded atoms in carbon monoxide? how many lone pairs in carbon monoxide?
Answers
Answer:
there are 3 bonded atoms in carbon monoxide and a total of 6 electrons
Answer: There are a total of two bonded atoms in carbon monoxide: one carbon atom and one oxygen atom. There are no lone pairs in carbon monoxide.
Explanation: Carbon monoxide, or CO, is a chemical compound made up of one carbon atom bonded to one oxygen atom. The molecule has a linear shape, with the carbon atom at one end and the oxygen atom at the other end. There are a total of two bonded atoms in carbon monoxide: one carbon atom and one oxygen atom.
In terms of lone pairs, or non-bonding electrons, carbon monoxide has none. Lone pairs are pairs of electrons that are not involved in bonding, and they are typically found in the outermost electron shell of an atom. In carbon monoxide, all of the electrons are either bonded to the other atom in the molecule or are involved in bonding to that atom. Therefore, there are no lone pairs in carbon monoxide.
During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total mass of the black residue formed was 79.6 g. Does the law of conservation of mass hold true in this case?
Answers
No, the Law of Conservation of Mass does not hold true for this case because the mass of reactant is not equal to the mass of product.
What is Law of Conservation of Mass?
According to the Law of Conservation of Mass, during a chemical reaction, the total masses of the products and reactants must be equal.This law states that although mass can be reorganized in space or the entities connected to it can change shape, mass itself cannot be generated or destroyed.For instance, the mass of the components prior to a chemical reaction (reactants) is equal to the mass of the components following the reaction (products).Therefore, the entire mass of the reactants, or starting materials, must be equal to the mass of the products during any chemical reaction and low-energy thermodynamic processes in an isolated system.Here, the mass of the reactant (copper carbonate) is not equal to the mass of the product (black residue). Hence, the Law of Conservation of Mass is not applicable in this case.To learn more about Law of Conservation of Mass from the given link
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which of the following is true about cations?a. They are negatively charged and move toward an anodeb. They are negatively charged and move toward a cathodec. They are positively charged and move toward an anoded. They are positively charged and move toward an cathode.
Answers
ANSWER
They are positively charged and move toward an anode
Option C
EXPLANATION
In electrochemical reaction, cation are positively charged. Since they are positively charged, they move toward negatively charged anode
There are two types of reaction which are oxidation and reduction reaction. At oxidation, the positively charged cations move towards the negatively charged anode.
Recall, that like charges attract and unlike charges repel.
Therefore, the correct answer is option C
Which of the following biogeochemical cycles uses the reaction 2N2 + 6H20 --> 4NH3 + 302? (3 points)
The nitrogen cycle
The carbon cycle
The water cycle
The phosphorus cycle
Answers
Answer:
phosphorus cycle
Explanation:
the phosphorus cycle because 302 equals to it
the retrosynthetic arrow in the following scheme describes a reaction that would use which of the reagents below? br2, hυ etona kotbu hbr, roor hbr
Answers
The arrow of retrosynthesis. Indicates that the species on the left is a descendant of the species on the right.
Arrow of bond dipole. The arrow head is pointing to the more electronegative atom (the - atom), while the crossed end is above the more electropositive atom (the + atom).
This is a retrosynthetic arrow, which means that the species before the arrow (which is typically more complicated) is synthesized from the species after the arrow (normally less complicated).
One or more steps can be used to create the target molecule.
We use this type of arrow to plan forward syntheses of more complex molecules by strategically detaching the more complex molecule.
Example showing Retrosynthetic approach:
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_____has particles with the greatest average kinetic energy
a
Ice water
b
Hot water
c
Warm water
d
Room temperature water
Answers
Answer:
c warm water
Explanation:
Kinetic energy is related to temperature. The molecules in a glass of warm water have more kinetic energy (they move faster – see Racing Molecules) than the molecules in a glass of cold water. The temperature of a substance is the average* amount of kinetic energy its molecules have.
Answer:
hot water
Explanation:
Write the balanced chemical equation for the combustion of sodium metal
Answers
Answer:
sodium appears as a silvery soft metal that becomes grayish white upon exposure to air
Explanation:
molecular weight 22.989769 g/mol
modify dates 2021 -01-23
create dates 2004-09-16
What is plate tectonics
Answers
Answer:
Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.
a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle
write the empirical formula for at least four ionic compounds that could be formed from the following ions: mno−4, fe2 , bro−3, nh 4
Answers
KMnO4; NaMnO4; LiMnO4
FeO ; FeCl2; FeS ; FeSO4
HBrO3; KBrO3; NaBrO3; LiBrO3
PbO2; PbS2; Pb(SO4)2; Pb(CO3)2
Ionic compounds are made up of charged particles called ions, which are created when an atom (or group of atoms) gains or loses an electron. An ion is classified as either positively or negatively charged depending on its charge.
What is an Emperical formula ?Chemical formulas for compounds that simply specify the proportions of the elements they contain rather than the exact number or arrangement of atoms are known as empirical formulas. The element in the compound with the lowest whole number ratio would be this one.
An empirical formula is used to indicate the simplest whole-number ratio of the various atoms in a molecule. The molecular formula indicates the precise number of different atom kinds that are present in a compound's molecule.Learn more about Emperical formula here:
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State the purpose of the following raw materials 1.ironore 2.coke 3.limestone
Answers
Iron ore, coke and limestone are three important raw materials for the production of iron. Iron ore is used for the production of iron, while coke is used for heating the iron ore and limestone is added as a flux to remove impurities from the iron during the smelting process.
Iron ore: Iron ore is a mineral that is mined and extracted from the ground. Iron is the most important raw material used in steel production. Iron ore is used to make steel. Iron ore is used to make iron and steel. Iron ore is melted down with coke, which is a carbon-rich fuel, in a blast furnace to create pig iron. The pig iron is then converted into steel in a steelmaking plant.Coke: Coke is a fuel made from coal that has been heated in the absence of air. Coke is used to heat the iron ore and create the high temperatures needed for the smelting process. Coke is an important raw material for the production of steel.
Coke is also used to produce other materials, such as chemicals and fertilizer.Limestone: Limestone is a sedimentary rock composed primarily of calcium carbonate. Limestone is used as a flux in the steelmaking process. The purpose of adding limestone to the blast furnace is to remove impurities from the iron, such as sulfur and phosphorus.
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on the resonance hybrid for no−2, in between the nitrogen atom and each oxygen atom there is:
Answers
N-O bond as well as a double bond. The N atom possesses a positive charge and an unpaired electron. These are the two principal resonance sources of NO2.
Because each nitrogen atom requires three electrons to fill its outermost shell, nitrogen atoms will establish three covalent bonds (also known as triple covalent) between two nitrogen atoms. Methane (CH4) is another molecule that contains a nonpolar covalent link. There are two sigma bonds and one pair of unpaired electron in nitrogen dioxide. There are an octet of electrons in each of the two oxygen atoms. With the oxygen atom, the nitrogen atom's p orbital forms a pi connectio
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Why do you think the term ionic is used to describe compounds formed from a metal element and a nonmetal element?
Answers
Answer:
All compounds form when atoms of different elements share or transfer electrons. Compounds in which electrons are transferred from one atom to another are called ionic compounds.
Explanation:
Because the positive and negative charges cancel out, an ionic compound is neutral in charge.
If 20g of caco2 and 25g of Hcl are mixed ,what mass of Co2 is produced ?
Answers
Approximately 8.79 grams of CO₂ are produced when 20 grams of CaCO₃ and 25 grams of HCl are mixed.
The balanced chemical equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) is:
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
From the equation, we can see that 1 mole of CaCO₃ reacts with 2 moles of HCl to produce 1 mole of CO₂. The molar mass of CaCO₃ is 100.09 g/mol, and the molar mass of HCl is 36.46 g/mol.
To find the mass of CO₂ produced, we need to determine which reactant is limiting. This can be done by calculating the number of moles of each reactant and comparing them to the stoichiometric ratio in the balanced equation.
Number of moles of CaCO₃ = 20 g / 100.09 g/mol = 0.1998 mol
Number of moles of HCl = 25 g / 36.46 g/mol = 0.685 mol
According to the balanced equation, 1 mole of CaCO₃ reacts with 2 moles of HCl. Therefore, the limiting reactant is CaCO₃, since only 0.1998 moles of CaCO₃ are available to react with HCl.
From the balanced equation, we know that 1 mole of CaCO₃ produces 1 mole of CO₂. Therefore, the number of moles of CO₂ produced is also 0.1998 mol.
The molar mass of CO₂ is 44.01 g/mol. Therefore, the mass of CO₂ produced is:
Mass of CO= 0.1998 mol x 44.01 g/mol = 8.79 g
Therefore, approximately 8.79 grams of CO₂ are produced when 20 grams of CaCO₃ and 25 grams of HCl are mixed.
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what is the term for the shorthand description of the arrangement of electrons by sublevels according to increasing energy? group of answer choices atomic notation atomic number continuous spectrum electron configuration none of the above
Answers
The term for the shorthand description of the arrangement of electrons by sublevels according to increasing energy is electron configuration.
This means that electrons are arranged in the atom in the order of increasing energy. The order follows the patterns of the periodic table and consists of the following components:
Principal Quantum Number (n): This is the overall energy level of the electron. It determines how far away from the nucleus the electron is located.Azimuthal Quantum Number (l): This is a measure of the angular momentum of the electron. It describes the type of orbital the electron occupies, such as s, p, d, or f.Magnetic Quantum Number (m): This number describes the orientation of the orbital in space.Spin Quantum Number (s): This is the spin of the electron, which can be either clockwise (spin-up) or counterclockwise (spin-down).
These components are usually written in shorthand notation, with the principal quantum number first, followed by a letter for the azimuthal quantum number, and then a number for the magnetic quantum number. For example, the shorthand for the electron configuration of hydrogen is 1s1, where 1 is the principal quantum number, s is the azimuthal quantum number, and 1 is the magnetic quantum number.
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Models are used to observe phenomena which _____.
Answers
Answer:
are too large
Explanation:
phenomena which are too large
The significance of the Ronald Cotton case:
a. it shows that a serial killer can be indicted 20 years after the crimes
b. it demonstrates the fallibility of eyewitness accounts
c. that a person can be convicted of murder, even without a body
d. that a person can be convicted without individual evidence
Answers
The significance of the Ronald Cotton case, that a person can be convicted without individual evidence. Therefore, option D is correct.
What is evidence ?Evidence is something or information used to increase or decrease the likelihood that a fact exists. Evidence can be testimony, written materials, visual or audio recordings, DNA samples, or other physical artifacts.
In essence, evidence is utilized to support a claim made by people or organizations who think something is real or a fact. Evidence may also be used to debunk or dispute a fact or claim that others don't agree with or believe to be incorrect.
Thus, option D is correct.
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