Answers
Answer:
The equation is not balanced.
Explanation:
The Law of Conservation of Matter is also called the law of conservation of mass or the Lomonosov-Lavoisier Law. This law postulates that "the mass is neither created nor destroyed, it only transforms." This means that the reactants interact with each other and form new products with different physical and chemical properties than the reactants because the atoms of the substances are arranged differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the amounts of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. . In other words, then the mass before the chemical reaction equals the mass after the reaction. The exception to the rule is nuclear reactions, in which it is possible to convert mass into energy and vice versa.
This is, te law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.
The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.
Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:
Left side: 2 hydrogen H and 2 oxygen O
Right side: 2 hydrogen H and 3 oxygen O
Since the quantity of each element is different on each side of the reaction, the equation is not balanced.
The balanced equation is:
2 H₂O₂ → 2 H₂O + O₂
Related Questions
350 coulombs of charge flows through an iron in 70 seconds. What is the current flowing through the iron
Answers
350= Current x 70 seconds
350/70= 5 amps
Assuming that the pauli exclusion principle remains valid in the distant universe, what is the maximum number of electrons that can populate a given orbital there?.
Answers
The maximum number of electrons that can populate a given orbital is two assuming that the pauli exclusion principle remains valid.
What is pauli exclusion principle and what is the maximum number of electrons that can populate a given orbital there?Pauli exclusion principle which was discovered by pauli states that no two electron in the same atom can have same values for the quantum numbers.Here the question is asked of the maximum number of electrons that can populate a given orbital there.Assuming that the pauli exclusion principle remains valid in the distant universe the maximum number of electrons that can populate a given orbital is 2 .Pauli exclusion principle also states that no two electrons in a solid have same energy states.Hence there are two electrons maximum that can populate the orbital assuming the pauli exclusion principle remains valid.To know more about electrons visit:
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What are some of the difficulties in identifying particular drugs? Why is it important for forensic scientists to be able to identify particular drugs?
Answers
Answer:
The forensic scientist must be able to tell the difference between the substances.
Explanation:
It is important for forensic scientists to be able to identify particular drugs so they have evidence for the case that a certain drug was present.
The goal of forensic drug chemistry is to determine whether the material submitted contains an illegal substance.
Conversion help? Please don’t add a link or spam, thanks
Answers
11.4 g/cm³ is equivalent to 1.14 Pg/dal. In order to convert 11.4 g/cm³ to Pg/dal, we need to use the following conversion factors:
1 g = 10¹² Pg (pico-grams)
1 cm³ = 10⁻¹ dal (deca-liters)
First, we can convert the density from grams per cubic centimeter to grams per liter, since both of these are common units for density. To do this, we simply multiply by 1000 (since there are 1000 cubic centimeters in a liter):
11.4 g/cm³ x 1000 cm³/L = 11400 g/L
Next, we can convert from grams to pico-grams and from liters to deca-liters:
11400 g/L x 10⁻¹² Pg/g x 10⁻¹ dal/L = 1.14 Pg/dal
Therefore, 11.4 g/cm³ is equivalent to 1.14 Pg/dal. This conversion shows that the density is much higher when expressed in pico-grams per deca-liter, as compared to grams per cubic centimeter.
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can someone help its not hard. What are the cons of using a cup made of plastic?
Answers
Answer:
it could burn if a hot liquid is poured into it and it could break easily
You can increase the strength of an electromagnet by
A. changing the position of the compass.
B. adjusting the magnetic declination.
C. using a stronger ferromagnetic material for the core.
D. reversing the magnetic domains.
Answers
Answer:
A. changing the position of the compass
How much of a 10 M solution is needed to make 1 liter of a 1 M solution
Answers
Answer:
0.1 L
Explanation:
M₁ × V₁ = M₂ × V₂
10M × V₁ = 1M × 1L
V₁ = 0.1 L
I hope this helps :)
The molar dilution can be used to estimate the molarity or the volume. 0.1 L of 10 M solution is required to make 1 M of solution.
What is the dilution factor?A dilution factor of the molar concentration is used to calculate the molar concentration or the volume needed to make the diluted solution from the stock.
Given,
M₁ = 10 M
V₁ = ?
M₂ = 1 M
V₂ = 1 L
The volume is calculated as:
M₁ V₁ = M₂ V₂
10 V = 1 × 1
V = 1 ÷ 10
= 0.1 L
Therefore, 0.1 L of the 10 M solution is needed.
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Multiple Choice: Encircle the letter of the correct answer.
1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.
6. Any sample of matter has mass and takes up space. The main reason
for this is because __________.
a. All matter is heavy
b. Matter can be a gas
c. Matter is made up of tiny particles that have mass and take up space
d. The Earth is made of matter
7. When a thermometer is heated, the red liquid inside the thermometer
moves up. This is mainly because __________.
a. The red liquid is thin.
b. The molecules of the liquid move faster and get a little further apart
c. Hot liquid is lighter
d. The glass of the thermometer gets hot
For question numbers 8-10,
8. To describe a liquid, you could say:
a. The particles of a liquid are not attracted to one another
b. The particles of a liquid are in motion
c. The particles of a liquid are not able to move past one another
d. A liquid has no mass but takes up space
9. To describe a solid, you could say:
a. The particles of a solid are not attracted to each other
b. The particles of a solid can move past one another
c. The particles of a solid vibrate but do not move past one another
d. A solid has mass but does not take up space
10. To describe a gas, you could say:
a. The particles are very attracted to each other
b. The particles are not very attracted to each other
c. The particles are close together like a liquid
d. The particles of a gas are closer apart than the particles in a liquid or
solid
Answers
Answer:
1. solid
2. all of them
3. Faster and farther apart
4. more freely moving than a solid
5. the amount of matter in an object
6. matter can be a gas.
7. the glass of the thermometer gets hot.
8. the particles of a liquid are unable to move past each other.
9. the particles of a solid vibrate but do not move past one another.
10. the particles are not attracted to one another.
P O R F A V O R
4. Expresa las siguientes magnitudes en unidades del Sistema
Internacional. (1 punto)
a. 45 m3
b. 1250 cm3
c. 63 días
d. 97 cm/min2
e. 927 g∙cm/min2
f. 97 km/h2
g. 2500 g/cm2
h. 36 km/h
Answers
Answer:
a. 45×10³ kg
b. 1.25 kg
c. 5443200 s
d. 2.69×10⁻⁴ m/s²
e. 2.57×10⁻⁶N
f. 7.48×10⁻³ m /s²
g. 2.45 Pa
h. 10 m/s
Explanation:
The SI units are: kg, m, s, N, K, A, Pa, J and cd
a. 1 g is the mass for 1 cm³. We convert the m³ to cm³
45 m³. 1×10⁶ cm³ / 1 m³ = 45×10⁶ cm³
By the way, 45×10⁶ cm³ = 45×10⁶ g
We convert the g to kg → 45×10⁶ g . 1 kg / 1000 g = 45×10³ kg
b. As 1 g = 1 cm³, we convert the cm³ to g and then, the g to kg
1250 cm³ = 1250 g → 1250 g . 1kg / 1000 g = 1.25 kg
c. 1 day has 24 hours; 1 hour has 60 minutes; 1 minute has 60 seconds
1 hour has 3600 s. Then 24 h . 3600 s / 1 h = 86400 s
86400 s/d. 63 d = 5443200 s
d. 1 min² = 3600 s²
97 cm / 3600 s² = 0.0269 cm/s² / 100 = 2.69×10⁻⁴ m/s²
e. 927 g.cm / min² / 3600 s² = 0.2575 g.cm/s² → dyn
We need to convert dyn to N
1 dyn = 10⁻⁵N → 0.2575 dyn . 10⁻⁵N / 1dyn = 2.57×10⁻⁶N
f. 1 m/s² = 12960 km/h²
12960 km/h² . 1 m/s² / 97 km/h² = 7.48×10⁻³ m /s²
g. 2500 g/cm² . 1kg / 1000 g = 2.5 kg/cm²
1 Pa = 1.02kg/cm²
2.5 kg/cm² . 1 Pa / 1.02 kg/cm² = 2.45 Pa
h. 1 h = 3600 s
36 km / 3600 s = 0.01 km /s → 0.01 km . 1000 m / 1 km = 10
= 10 m/s
For a series of cyclic voltammograms collected for the same redox-active species at different concentrations, the height of the cathodic peak will vary as a function of concentration according to:
Answers
For a series of cyclic voltammograms collected for the same redox-active species at different concentrations, the height of the cathodic peak will vary as a function of concentration according to the Randles-Sevcik equation, which describes the relationship between the peak current, peak potential, scan rate, and concentration.
The Randles-Sevcik equation relates peak current, concentration, and other experimental parameters in electrochemistry. The equation is described as:i_p = (2.69 x 105) n3/2 A D1/2 c ν1/2Wherei_p is the peak current, n is the number of electrons transferred, A is the electrode area, D is the diffusion coefficient, c is the concentration of the species, and ν is the scan rate.The Randles-Sevcik equation assumes that there is a reversible electrochemical process occurring at a stationary electrode surface, with no adsorption, activation, or other phenomena.
The equation can be used to calculate the diffusion coefficient, electrode area, and other experimental parameters of an electrochemical cell.The height of the cathodic peak will vary as a function of concentration according to the Randles-Sevcik equation. The equation indicates that as the concentration of the species increases, the peak current also increases. This is because a higher concentration of redox-active species in the solution means more species are available to be reduced or oxidized at the electrode surface during the scan.
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when holden goes to visit phoebe, how does she react to his arrival? how are the two similar and how are they different?
Answers
Catcher in the Rye is a young-adult fiction by J. Salinger. It is a novel based on the coming of the age and literary realism. Phoebe is disappointed with Holden's vindication.
Holden Caulfield is the protagonist and the narrator of the story who is intelligent but is expelled from the school. Phoebe is Holden's sister, she is infuriated by Holden's dismissal.
She knows that their father would be angry because Holden is expelled from school. Holden tries to explain his situation to his sister and tells her about his minimum chance of joining the military school.
He explains to her how bad is his school Pencey and he dislikes that place. But Phoebe interrupts him by saying that he doesn't like anything or anywhere.
Her challenge makes him think about the one thing that he likes the most and he couldn't. It shows Phoebe's concern to stimulate Holden. She is seen sympathetic and angry with her brother for not growing up.
Holden describes them in loving, caring terms, demonstrating his genuine affection and respect for them. How does Holden characterize Phoebe? Holden describes Phoebe as wise, overly affectionate at times, and overly emotional for her age.
Also as smart, tiny, and a little noisy. Holden, Phoebe, and Allie are siblings in the novel "The Catcher in the Rye." Holden looks up to his younger brother and sister as idealized versions of himself. Holden describes Allie as the most intelligent and pleasant member of his family.
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using hess's law, calculate δh° for the process: sb (s) cl2 (g) sbcl5 (s) from the following information: sb (s) cl2 (g) sbcl3 (s) δh° = − 314 kj sbcl3 (s) cl2 (g) sbcl5 (s) δh°= − 80 kj
Answers
The δh° for the process SB (s) + Cl2 (g) → SbCl5 (s) is -394 kJ using Hess's-Law.
What is the value of ΔH° for the process SB (s) + Cl2 (g) → SbCl5 (s) using Hess's Law?Hess's Law states that the enthalpy change of a reaction is independent of the pathway taken and depends only on the initial and final states. By combining the given reactions, we can cancel out the intermediate compound (SbCl3) and obtain the desired reaction. The enthalpy change for the first reaction (SB (s) + Cl2 (g) → SbCl3 (s)) is -314 kJ, and for the second reaction (SbCl3 (s) + Cl2 (g) → SbCl5 (s)) is -80 kJ. By adding these two reactions, we obtain the overall reaction with a δh° of -394 kJ.
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what is not a funtion of a muscular system
Answers
Answer:
Production of blood cells is not a function of the muscular system.
Explanation:
The muscular system functions are:
move the skeleton.
maintain body posture.
support soft tissues.
guard body entrances/exits.
maintain body temperature.
If you increase the amount of Reactant A, the reaction rate will also increase.
What is this statement an example of?
A. A theory
B. An observation
C. A hypothesis
D. A scientific question
Answers
Which of the following is a result of the specific heat differences between land and ocean?
A. Ocean tides are created.
B. Volcanoes are created.
C. Saltwater is created.
D. Breezes are created.
Answers
How many grams are there in 0.37 moles of H20?
Answers
Answer:
18.01528 gram using the molecular weight calculator and the molar mass of H2O.
Explanation:
Combustion analysis of fluorene, a polycyclic aromatic hydrocarbon used to make dyes, plastics, and pesticides, produces 11.44 g CO2 and 1.80 g H2O. Calculate the empirical formula for fluorene.
Answers
Combustion analysis of fluorene, a polycyclic aromatic hydrocarbon used to make dyes, plastics, and pesticides, produces 11.44 g CO2 and 1.80 g H2O. The empirical formula of fluorene C₆H₄.
CₓHₐ + O2 → CO2 + H2O Since the combustion is complete, so the total mass of the reactants is equal to the total mass of the reactants Therefore, Mass of O2 = (17.9 + 9.14) – 5.9 = 21.14 grams Here, the empirical formula for the hydrocarbon is CₓHₐ. So, now we have to need to determine the number of moles of the O2, CO2, and H2O :- Mole of CO2 = 17.9/44 = 0.4068 Mole of H2O = 9.14/18 = 0.5078 Mole of O2 = 21.14/32 = 0.6606. The empirical formula for the compound containing uranium and fluorine is UF6. Explanation: The empirical formula of a compound represents the lowest whole number ratio of elements in the compound. This ratio is represented by subscripts in the formula. by this information, we can consider that combustion analysis of fluorene, a polycyclic aromatic hydrocarbon used to make dyes, plastics, and pesticides, produces 11.44 g CO2 and 1.80 g H2O. The empirical formula of fluorene C₆H₄.
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Question 2:
ter:
What type of matter has a fixed
composition?
A - Pure Substances
B- Elements
C - Mixtures
D-A&B
Answers
Answer:
D A and B that is the answer
What happen in electron-rich base Bronsted Lowry reaction?
Answers
In an electron-rich base Bronsted-Lowry reaction, electron-rich base accepts a proton (H+) from an acid to form a conjugate acid and a conjugate base.
According to the Bronsted-Lowry theory, an acid is a proton (H+) donor, while a base is a proton (H+) acceptor.
In the case of an electron-rich base, it has a surplus of electrons which makes it more inclined to accept a proton from an acid.
When this reaction occurs, the electron-rich base becomes a conjugate acid and the initial acid becomes a conjugate base.
Hence In an electron-rich base Bronsted-Lowry reaction, the electron-rich base accepts a proton from an acid, resulting in the formation of a conjugate acid and a conjugate base.
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How many protons, neutrons, and electrons are there?
Answers
Answer:
proton-27
electron-25
neutron-35
Explanation:
Please respond, will give brainliest to best answer! (multiple choice)
The ion with the smallest radius is
a. Br-
b. Cl-
c. I-
d. F-
e. O2-
Answers
Answer:
D. F-
Explanation:
Br - 185pm
Cl - 175pm
I - 198pm (I'm not sure what "I" is but I guess it is iodine)
F - 147pm
\(O_{2}\) - 152pm
=> The ion with the smallest radius is F - 147pm
im giving out the game the last of us part 2 who wants it
Answers
Answer:
YEESSS
Explanation:
Because that seems like the only logical answer.
Answer:
YES
Explanation:
YES
Given the volumes of a solvent and solute and their density, what temperature do they freeze at? It would really help if someone helped explain how to do this, I’m kind of stuck thanks
Answers
Yes, it will freeze at 0 degree Celsius. The correct option is A.
What is freezing point?The temperature at which a liquid solidifies is known as the freezing point. Similar to the melting point, the freezing point typically rises with increasing pressure.
The freezing point depression equation must be used to calculate the freezing temperature of a solvent and solute mixture. You can use this equation to determine how adding a solute alters a solvent's freezing point.
ΔTf = Kf x molality
Here,
Mass of the solvent = 100 mL x 1 g/mL = 100 g
Molality of the solute = 10 g / 58.44 g/mol = 0.171 mol
Molality of the solvent = 0.171 mol / 100 g = 0.00171 mol/g
So,
ΔTf = 1.86 °C/m x 0.00171 m = 0.00316 °C
Thus, the correct option is A.
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HCl , HI , H2SO4 , LiCl , and KI are all classified asstrong electrolytes.acids.weak electrolytes.nonelectrolytes.
Answers
HCl, HI, H₂SO₄, LiCl, and KI are all classified as acids. These compounds, HCl, HI, H₂SO₄, LiCl, and KI, all dissociate in water to release hydrogen ions (H⁺), which is the defining characteristic of acids.
Strong electrolytes are substances that completely dissociate into ions when dissolved in water, resulting in a high electrical conductivity. HCl, HI, H₂SO₄, LiCl, and KI all fall under this category. When these compounds dissolve in water, they break apart into their constituent ions, such as H⁺ and Cl⁻ for HCl, H⁺ and I⁻ for HI, H⁺ and SO₄²⁻ for H₂SO₄, Li⁺ and Cl⁻ for LiCl, and K⁺ and I⁻ for KI.
These ions are capable of conducting electricity in the solution, hence qualifying these compounds as strong electrolytes. It's important to note that strong electrolytes undergo complete ionization, meaning that nearly all of the compound dissociates into ions.
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what’s the answer ?????
Answers
option A is the correct one
It represents Mp orBp of a substance at a specific pressure
Help ASAP give brainest if right And please hurry
Answers
Answer:
Conduction
Convention
Radiation
in that order
Answer:
Conduction
Convention
Radiation
Explanation:
3. Define the following terms: ion, cation, anion, and
electrolyte.
Answers
An ion is an atom or molecule that has gained or lost one or more electrons, giving it a net charge. Cation is an ion with a positive charge. Anion is an ion with a negative charge and an electrolyte is a substance that can conduct electricity when dissolved in water.
Ions are formed when atoms or molecules lose or gain electrons. When an atom loses an electron, it becomes a positively charged ion, or cation. When an atom gains an electron, it becomes a negatively charged ion, or anion.
Electrolyte is a substance that can conduct electricity when dissolved in water. They are important in many biological processes, including nerve conduction, muscle contraction, and fluid balance. They are also used in batteries, fuel cells, and other devices.
Here are some examples of ions, cations, anions, and electrolytes:
Ion: Sodium ion (Na+)
Cation: Calcium ion (Ca2+)
Anion: Chloride ion (Cl-)
Electrolyte: Sodium chloride (NaCl)
Thus, an ion is an atom or molecule that has gained or lost one or more electrons, giving it a net charge. Cation is an ion with a positive charge. Anion is an ion with a negative charge and an electrolyte is a substance that can conduct electricity when dissolved in water.
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The chemical equation below shows the decomposition of ammonium nitrate (NH4NO3). NH4NO3 Right arrow. N2O 2H2O A chemist who is performing this reaction starts with 160. 1 g of NH4NO3. The molar mass of NH4NO3 is 80. 03 g/mol; the molar mass of water (H2O) is 18. 01 g/mol. What mass, in grams, of H2O is produced? 9. 01 18. 01 36. 03 72. 6.
Answers
The mass of water, H₂O produced from the reaction is 72.06 g
We'll begin by calculating the mass of NH₄NO₃ that reacted and the mass of H₂O produced from the balanced equation.
NH₄NO₃ —> N₂O + 2H₂O
Molar mass of NH₄NO₃ = 80.03 g/mol
Mass of NH₄NO₃ from the balanced equation = 1 × 80.03 = 80.03 g
Molar mass of H₂O = 18.01 g/mol
Mass of H₂O from the balanced equation = 2 × 18.01 = 36.02 g
From the balanced equation above,
80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O
Finally, we shall determine the mass of H₂O produced by the reaction of 160.1 g of NH₄NO₃.
From the balanced equation above,
80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O.
Therefore,
160.1 g of NH₄NO₃ will react to produce = (160.1 × 36.02) / 80.03 = 72.06 g of H₂O.
Thus, the mass of water, H₂O produced from the reaction is 72.06 g
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Help would be appreciated, thanks!
Answers
The correct card that represents the total amount of solvent in the room is ⁷/3 containers of solvent (option A).
How to sum fractions?According to this question, a stock room has 3 containers of solvent. 2 of this containers are full, while one is ⅓ full.
The total amount of solvent in these containers can be calculated as follows;
Full container = 1Third container = ⅓Total amount of solvent = 1 + 1 + ⅓
= 2 + ⅓
= 7/3.
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Carbon dioxide will bind with water to form ____________ , which is capable of dissociating into ____________ . This process is reversible in the presence of high acidity or low carbon dioxide concentrations
Answers
Carbon dioxide will bind with water to form carbonic acid (H₂CO₃), which is capable of dissociating into hydrogen ions (H⁺) and bicarbonate ions (HCO₃⁻). This process is reversible in the presence of high acidity or low carbon dioxide concentrations.
When CO₂ dissolves in water, it reacts with H₂O to create carbonic acid. This reaction can be represented as:
CO₂ + H₂O ⇌ H₂CO₃
Carbonic acid is a weak acid, meaning it partially dissociates in water. This dissociation produces hydrogen ions and bicarbonate ions:
H₂CO₃⇌ H⁺ + HCO₃⁻
The concentration of hydrogen ions determines the acidity of a solution. If acidity increases (more H⁺ ions), the equilibrium will shift towards the left, converting H₂CO₃ back into CO₂ and H₂O:
H₂CO₃ + H⁺ ⇌ CO₂ + 2H₂O
Similarly, when CO₂ concentrations decrease, the reaction will also shift to the left to restore equilibrium:
H₂CO₃⇌ CO₂ + H₂O
This reversible process plays a crucial role in maintaining pH balance in various natural systems and human body processes, such as blood buffering systems and ocean acidification.
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