Which coefficients correctly balance the formula equation below? NH 4 NO 2 (s) N 2 (g)+H 2 O(l) A. 1, 2, 2 C. B. 2, 1, 2 D. 1, 2, 1 1, 1, 2

Answers

Answer 1

The coefficients which correctly balance the formula for the equation of reaction of NH₄ and NO₂ is 1,1,1,2.

What is a Balanced Chemical reaction?

This is the type of reaction in which the atoms of the elements of the reactants equal that of the product.

The balanced reaction is seen below where 2 was added to H₂O so as to balance the atoms of oxygen on both sides.

NH₄ + NO₂ (s) ⇒ N₂ (g)+2H₂O(l)

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Related Questions

6. What is the mass of the object if the net force acting on it was 356 N and the acceleration rate
was 4 m/s/s2

Answers

The mass of an object with a net force of 356N and an acceleration rate of 4m/s² is 89kg.

How to calculate mass?

The mass of an object can be calculated using the following formula:

F = ma

Where;

F = force (N)m = mass (kg)a = acceleration (m/s²)

m = F/a

m = 356/4

m = 89kg

Therefore, the mass of an object with a net force of 356N and an acceleration rate of 4m/s² is 89kg.

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A 0.205 g sample of caco3 (mr = 100.1 g/mol) is added to a flask along with 7.50 ml of 2.00 m hcl. caco3(aq) + 2hcl(aq) → cacl2(aq) + h2o(l) + co2(g) enough water is then added to make a 125.0 ml solution. a 10.00 ml aliquot of this solution is taken and titrated with 0.058 m naoh. naoh(aq) + hcl(aq) → h2o(l) + nacl(aq) how many ml of naoh are used?

Answers

Answer:

118MOLS

Explanation:

M1VI=M2V2

THE REST WORK OUT ( BA UNZA STUDENTS HE HE HE )


How do acquired characteristics differ from adaptations

Answers

Answer:

acquired traits are traits that organisms develops over a lifetime. adaptation are trait that enhances an organism's ability to survive and reproduce in its environment.

Part 1. determine the molar mass of a 0.458-gram sample of gas having a volume of 1.20 l at 287 k and 0.980 atm. show your work.

part 2. if this sample was placed under extreme pressure, describe how the actual volume would compare to the predicted volume. explain your answer.

Answers

The molar mass of 0.458-gram sample of gas having a volume of 1.20 l at 287 k and 0.980 atm is 9.15g/mol.If this sample was placed under extreme pressure, the volume of the sample will decrease.

How to calculate molar mass?

The molar mass of a substance can be calculated by first calculating the number of moles using ideal gas law equation:

PV = nRT

Where;

P = pressureV = volumeT = temperatureR = gas law constantn = no of moles

0.98 × 1.2 = n × 0.0821 × 287

1.18 = 23.56n

n = 1.18/23.56

n = 0.05moles

mole = mass/molar mass

0.05 = 0.458/mm

molar mass = 0.458/0.05

molar mass = 9.15g/mol

Therefore, the molar mass of 0.458-gram sample of gas having a volume of 1.20 l at 287 k and 0.980 atm is 9.15g/molIf this sample was placed under extreme pressure, the volume of the sample will decrease.

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The ph of a solution is 2. 0. Which statement is correct? useful formulas include startbracket upper h subscript 3 upper o superscript plus endbracket equals 10 superscript negative p h. , startbracket upper o upper h superscript minus endbracket equals 10 superscript negative p o h. , p h plus p o h equals 14. , and startbracket upper h subscript 3 upper o superscript plus endbracket startbracket upper o upper h superscript minus endbracket equals 10 to the negative 14 power. The poh of the solution is 12. 0. The concentration of oh– ions is 1. 0 mc021-5. Jpg 10–2 m. The concentration of upper h subscript 3 upper o superscript plus. Ions is 100. 0 m. The poh of the solution is 16. 0.

Answers

If the pH of the solution is 2.00. it follows that the pOH of the solution is 12.

What is pH?

The term pH refers to the hydrogen ion concentration of the solution. It shows the degree of acidity in the solution. We also know that the pOH can be obtained from the pH using; pOH = 14-pH.

Hence, if the pH of the solution is 2.00. it follows that the pOH of the solution is 12.

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A 6.0-mol sample of KClO3 was decomposed according to the equation 2KClO3 --> 2KCl + 3O2. How many moles of O2 are formed?

9.0 mol
2.5 mol
6.0 mol
4.5 mol

Answers

Answer:

2.5 mol is the answer

Explanation:

hope it will help you..

9 moles of O2

Balanced equation: 2KClO3 --> 2KCl + 3O2

given:

6.0-mol of KClO3

using molar ratio:

2KClO3 : 3O2

2 : 3

moles of O₂ = ( 6/2 ) * 3 = 9 moles

Hello people ~
Which of the following fibres is used for making parachutes?

A. Plastic

B. Terelyne

C. Nylon

D. Taylor swift ​

Answers

Answer:

C. Nylon

Explanation:

Nylon is a synthetic fiber, strong, elastic, and holds excellent abrasion resistance. Therefore it is used for making parachutes and ropes for rock climbing.

Answer:

Nylon

Explanation:

Nylon is a synthetic fibre not natural so long lastingIt is highly elastic and strong material.It is water proof also so used for making parachutes

Which of the following is pure compound?
Ethanol,petrol,steel ,tapwater

Answers

Answer:

tap water Is the pure substance

Answer:

Ethanol is pure

Explanation:

Purity meaning homogenious molecules/atoms, steel is a mix of iron and carbon, tapwater has minerals in it + fluoride etc, petrol has oxane and ethanol in it. ethanol is only ethanol and is inherently pure

Determine the ka of the weak acid ha whose conjugate base has kb 2. 9 × 10−8

Answers

Answer:  [tex]3.45*10^{-7}[/tex]

Explanation:

we can use the equation Ka * Kb = Kw

Kw is the equilibrium constant and always equals to [tex]1*10^{-14}[/tex]

we plug the given numbers into the equation, [tex]Ka * (2.9*10^{-8} )=(1*10^{-14} )[/tex]

now we just solve for Ka, [tex]Ka=\frac{1*10^{-14} }{2.9*10^{-8} }[/tex]

which gives us the value, [tex]Ka=3.45*10^{-7}[/tex]

hope this helped! ♡

The ka of the weak acid ha, whose conjugate base has kb 2. 9 × 10⁻⁸ is 3.45 × 10⁻⁷.

What is ka value?

Ka value is the equilibrium constant found by the dissociation of acid.

By the equation

[tex]\rm ka \times kb = kw[/tex]

where kb = [tex]2.9 \times 10^-^8[/tex]

kw = [tex]1 \times 10^-^4[/tex]

Now, putting the values in the equation

[tex]1 \times 10^-^1^4 = ka \times 2.9 \times 10^-^8\\\\ka = \dfrac{1 \times 10^-^1^4}{2.9 \times 10^-^8} \\\\ka = 3.45 \times 10^-^7[/tex]

Thus, the ka of the weak acid ha, whose conjugate base has kb 2. 9 × 10⁻⁸ is 3.45 × 10⁻⁷.

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N2 (g) + 3H2 (g) ⇔ 2NH3 (g) + Energy
Complete the table below by filling in "right" or "left" for the equilibrium shift and "increases" or "decreases" for the concentration of reactants and products.

Answers

Answer:

b is the answer

Which element cannot be the central atom of a lewis structure?.

Answers

Answer:

Hydrogen

Explanation:

Hydrogen can never be central atom despite its low electronegativity

Can you store cuso4 in an aluminum container? explain your reasoning

Answers

We can store the copper sulphate solution in alumiun container, if cover on alumiun is present.

Can you store cuso4 in an aluminum container?

Aluminium is more reactive than copper so the Aluminium will displace copper sulphate from its solution by reacting with it but if there is cover on the aluminium then the alumium can't react with copper.

So we can store the copper sulphate solution in alumiun container.

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No, we cannot store CuSO₄ in an aluminum container because aluminum will displace the copper present in the solution.

Why do different chemicals require different containers?

Different chemicals are put in different containers, usually glass, plastic, dark container, or light container.

Chemicals element are reactive to different substances and to each other.

That's why they are put in separate and different types of containers according to their reactivity.

Thus, No, we cannot store CuSO₄ in an aluminum container because aluminum will displace the copper present in the solution.

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The pH of a 0.016-M aqueous solution of p-toluidine
(CH3C6H4NH2) is 8.60. Calculate Kb.

Answers

From the calculations performed, the Kb of the reaction is 9.9 * 10^-10

What is Kb?

The term Kb refers to the base dissociation constant of a solution. We have the following information from the question;

pH of the solution = 8.60

concentration of p-toluidine =  0.016-M

Recall that  pOH = 14 - pH

pOH = 14 - 8.60 = 5.4

[OH] = Antilog (-5.4) = 3.98 * 10^-6 M

We have to set up the ICE table;

          CH3C6H4NH2(aq) + H2O(l) ⇄ CH3C6H4NH3^+(aq) + OH^-(aq)

I             0.016                                           0                                   0

C           -x                                                   +x                                  +x

E    0.016  - x                                            3.98 * 10^-6                3.98 * 10^-6

Hence;

Kb = [3.98 * 10^-6]^2/[0.016  - 3.98 * 10^-6]

Kb =  9.9 * 10^-10

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What two countries have nearly 50% of global coal reserves? a. united states and canada b. united states and russia c. brazil and russia d. brazil and canada please select the best answer from the choices provided a b c d

Answers

Answer:

B

Explanation:

The two countries that have nearly 50% of global coal reserves are

United States and Russia

Option B is correct

What is the global coal reserves?

Estimates of total world proved recoverable coal reserves as were around 1,156 billion short tons, with five countries accounting for roughly 75% of the world's proven coal reserves.

In conclusion, The USA coal reserves amounted to nearly 248.9 billion metric tons in 2020

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All materials are made of _____________.
A. Insulators
B. Atoms
C. Stuff
D. Conductors

Answers

Answer:

b atoms

Explanation:

everything is made up of atoms

Hey hun!!! the answer would be B! Atoms

SCIENCE- The Periodic Table of elements
help help​

Answers

Answer:

hydrogen is the first in periodic table

Which is more active? a. Iron or copper? ___________________

Answers

Answer:

iron

Explanation:

has more magnetic metal

Between iron and copper metals, iron is more active than copper metal as it is present above Co in the electrochemical series.

What is electrochemical series?

Electrochemical series is a type of reactivity series in which metals are arranged from bottom to the top in the increasing order of their reactivity.

As we know that reactivity is directly proportional to the activity of any element. In the electrochemical series iron is situated at the top position as compared to the copper metal.

So, iron is more active.

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What are the examples of 8 branches of chemistry?

Answers

Answer:

hmm suspicious

lol I don't know bye

What volume of a 0. 120 m cai2 solution would contain 0. 078 mol of the solute?.

Answers

Answer:650 mL

Explanation:

Remember that Molarity = mol/L. Rearranging the equation to solve for liters you get L = mol/Molarity.

80x10-3 mol / 12x10-2 M = 6.5x10-1 L

6.5x10-1 L (1x103) = 6.5x10 2 mL = 650mL

A gas mixture contains the following gases with the mole fractions indicated:
water (0.164), hydrogen (0.278), oxygen (0.455), and carbon dioxide (0.101). The
mixture also contains carbon monoxide. What is the mole fraction of carbon
monoxide? PLEASE HELP!

Answers

Hi there!

To find the mole fraction for the remaining compound (Carbon monoxide), we must remember that mole fractions add up to ONE.

We can subtract the mole fractions of all of the other gases from one to solve for the mole fraction of carbon monoxide.

1 - 0.164 - 0.278 - 0.455 - 0.101 = 0.002

You are a NASA engineer. You are the chief engineer for the Apollo 13 mission to the moon. The astronauts are running out of oxygen and need to get rid of the excess carbon dioxide. You know that sodium hydroxide (NaOH) has been suggested as a means of removing carbon dioxide from the spacecraft cabin. The filter which they had been using is fully saturated and no longer works. You remember that the astronauts have a 5000. g container of sodium hydroxide on the ship. You also know that sodium hydroxide can be used to remove carbon dioxide.

Use the following reaction: NaOH + CO2 → Na2CO3 + H2O

The astronauts have 2 days left before they land on Earth. You know that there are three astronauts, and each astronaut emits roughly 500. g Of carbon dioxide each day. Is there enough sodium hydroxide in the cabin to cleanse the cabin air of the carbon dioxide, or are the astronauts doomed?

Answers

Given the data from the question, the astronauts do not have enough sodium hydroxide in the cabin to cleanse the cabin air of the carbon dioxide.

How to determine the total CO₂CO₂ emitted per astronaut per day = 500 gCO₂ for 3 astronaut per day = 3 × 500 = 1500 gCO₂ for 3 astronaut for 2 days = 2 × 1500 = 3000 g

Balanced equation

2NaOH + CO₂ —>Na₂CO₃ + H₂O

Molar mass of NaOH = 40 g/mol

Mass of NaOH from the balanced equation = 2 × 40 = 80 g

Molar mass of CO₂ = 44 g/mol

Mass of CO₂ from the balanced equation = 1 × 44 = 44 g

SUMMARY

From the balanced equation above,

44 g of CO₂ required 80 g of NaOH

How to determine the mass of NaOH needed

From the balanced equation above,

44 g of CO₂ required 80 g of NaOH

Therefore,

3000 g of CO₂ will require = (3000 × 80) / 44 = 5454.55 g of NaOH

From the calculation made above, we can see that 5454.55 g of NaOH is needed by the astronaut to clean the cabin air but unfortunately, they only have 5000 g of NaOH.

Thus, we can conclude that the astronauts do not have enough NaOH to clean the air

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A monosaccharide is formed from a polysaccharide in what kind of reaction?.

Answers

Answer:

Catabolic reactions

Explanation:

Anabolic reactions combine monosaccharides to form polysaccharides, fatty acids to form triglycerides, amino acids to form proteins, and nucleotides to form nucleic acids. These processes require energy in the form of ATP molecules generated by catabolic reactions.

How does learning about elements,compounds and i turns allow us to understand the matter around us

Answers

Answer:

shows how anything like each thing is composed of for instance see how water is made of: hydrogen and oxygen which makes it a compound

The elements are the basic things by which everything in the world is build up. Different elements combine to form compounds. There are various kinds of inorganic and organic compounds around us that create the matter.

What are elements ?

Elements are the basic things of any substance in the world. There are 118 known elements which can be found in the modern periodic table. These elements include metals, gases, and semi metals.

Atoms of same elements forms molecules. Atoms of different elements combines to form the compounds. There are various types of compounds such as ionic compounds, covalent compounds, coordination complex etc.

Water is a compound formed from the elements hydrogen and oxygen. The table salt we use every day is a compound, sodium chloride. Similarly we can find there are many compounds that we use everyday are creating the matter in the world.

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Which of the following is not manufactured from high-density polythene?

A. Containers

B. Pipes

C. Candles

D. Toys​

Answers

Hey there!

C. Candle

Explanation:

Answer. High-density polyethylene or HDPE is a thermoplastic polymer used in the production of plastic bottles, containers, corrosion-resistant pipes, etc. and not used for the production of candles. Commercially available candles are made with paraffin wax.

I NEED THE AWNSER RIGHT NOWWWWW Four students categorized several environmental changes as short-term or long-term changes. Which chart correctly categorizes short- and long-term changes?

Answers

Based on the duration and effect of the environmental change, the correct categorization is as follows:

Short-term changes - Fire, flood, pollution of waterways, disease Long-term changes- extinction, early frost, deforestation, desertification

What are environmental changes?

Environmental changes refers to changes that occur in the environment either due to natural causes or by human activities.

Environmental changes can be categorized into:

short-term changes andlong-term changes

Short-term changes occur over a short period of time while long-term changes occur over a long period of time.

Based on the chart, the correct categorization is as follows:

Short-term changes - Fire, flood, pollution of waterways, disease Long-term changes- extinction, early frost, deforestation, desertification

Therefore, both long-term and short-term changes occur in the environment.

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A bicycle tire has a volume of 1.0 l at 22°c. if the temperature of the tire is increased to 52°c, what is the resulting volume of the tire? type in your answer using the correct number of significant figures. use the formula for charles' law: v1 t1 = v2 t2 l

Answers

The relationship between the volume, temperature, and pressure of the gas can be given by Charles law. The volume of the tire is 1.1 L.

What is Charle's law?

According to Charles's law, the volume is directly proportional to the temperature of the gas at a constant pressure.

Charle's law can be shown as,

[tex]\rm \dfrac{V_{1}}{T_{1}} = \rm \dfrac{V_{2}}{T_{2}}[/tex]

Given,

Initial volume = 1.0 L

Initial temperature = 295 K

Final volume = ?

Final temperature = 325 K

Substituting values in the above equation the final volume can be calculated as:

[tex]\begin{aligned}\rm V_{2} &= \rm \dfrac{V_{1}T_{2}}{T_{1}}\\\\&= \dfrac{ 1 \times 325}{295}\\\\&= 1.1\;\rm L\end{aligned}[/tex]

Therefore, the final resulting volume of the tire is 1.1 L.

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Answer:

1.1 L

Explanation:

How to know if a single replacement reaction will occur

Answers

Answer:

To determine whether a given single replacement will occur, you must use an “Activity Series” table. If the metal or the halogen is above the element it will replace based on the activity series, a single displacement reaction will occur. The video below summarizes an experiment conducted to compare the activities of three metals ( Mg, Cu and Zn ).

Explanation:

Single replacement reaction will occur if any more active specie will add on the solution.

What is single displacement reaction?

Single displacement reactions are those reactions in which one element from the given molecule is displaced by some other element.

Generally displacement reactions are shown by metals when more reactive metal is added in the solution of any another metal. Then more reactive metal displaces the metal which is already present in the solution and reaction is taking place is shown by changing in color.

Hence single displacement reaction will occur when more reactive metal is added in any solution.

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Use Figure 2 to describe which type of microscope the scientists should use to study the features of the hairlike organelles. Explain one possible function for these organelles based on where the organelles are located in the cell model in Figure 1

Answers

The Figure is not found here but the tiny hairlike organelles are also referred to as cilia.

What are cilia?

Cilia are a special type of hairlike organelles capable of covering the surface of cells in many different organisms.

Cilia are found in different eukaryotic organisms ranging from unicellular protists to mammals (epithelial tissues).

The function of cilia is to produce motion (movement) of the cell in which these structures are found.

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A nitrogen bubble with a volume of 0.0050 mL forms in the joint of a scuba diver as she ascends rapidly from a pressure of 4.1 atm to the surface, with a pressure of 1.0 atm. What is the volume of the bubble at the surface

Answers

As the scuba diver ascends rapidly to the surface at the given pressure, the volume of the nitrogen bubble at the surface becomes 0.021mL.

Boyle's law

Boyle's law states that the volume V of a given quantity of gas is inversely proportional to its pressure P as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given the data in the question;

Initial volume; V₁ = 0.005mL = 5.0 × 10⁻⁶LInitial pressure; P₁ = 4.1atmFinal pressure; P₂ = 1.0atm  Final volume; V₂ = ?

We substitute our given values into the expression above to find the final volume.

P₁V₁ = P₂V₂

[tex]V_2 = \frac{P_1V_1}{P_2} \\\\V_2 = \frac{4.1atm \ *\ 5.0*10^{-6}L}{1.0atm}\\ \\V_2 = \frac{4.1 \ *\ 5.0*10^{-6}L}{1.0}\\\\V_2 = 2.05*10^{-6}L\\\\V_2 = 0.021mL[/tex]

Therefore, as the scuba diver ascends rapidly to the surface at the given pressure, the volume of the nitrogen bubble at the surface becomes 0.021mL.

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Eas: add two curved arrows to show how water acts as a base

Answers

Is like when u pee the water curves also it could also be curved u never know
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