What is formed when a sodium atom and chlorine atom react chemically?
1- an element
2- a compound
3- an electron
4- a neutron

Answers

Answer 1
When sodium Na and chlorine Cl react chemically they form a white crystalline compound called sodium chloride NaCl

The answer is 2- compound

Related Questions

The volume of a given mass of gas is 410. mL at 380. mm Hg. What will its volume in mL be ifthe pressure changes to 2.00 atm?

Answers

Answer:

[tex]102.5\text{ mL}[/tex]

Explanation:

Here, we want to get the final volume of the gas

According to Boyles' law, the volume is inversely proportional to the pressure

Mathematically:

[tex]P_1V_1\text{ = P}_2V_2[/tex]

where:

P1 is the initial pressure of the gas which is 410 ml

V1 is the initial volume of the gas which is 380 mmHg

P2 is the final pressure of the gas which is 2 atm (we convert this to mmHg by multiplying by 760 mmHg: we have that as 2 * 760 mmHg = 1520 mmHg)

V2 is the final volume of the gas which is what we want to calculate

Substituting the values:

[tex]\begin{gathered} V_2\text{ = }\frac{P_1V_1}{P_2} \\ \\ V_2\text{ = }\frac{410\times380}{1520}\text{ = 102.5 mL} \end{gathered}[/tex]

What is the "percent
abundance" of the black eyed
peas in this sample?
Sample Number Abundance Mass
of Beans
(%)
(g)
187
[?]
1.3
Black
Eyed Peas
Cannellini
Beans
113
2.9
Weighted
Average (g)
1.9

Answers

The percentage abundance of the blacked-eyed peas in the sample is 39.6%.

What is the percentage abundance ?

It is the ratio in which a particular substance occurs to the total occurrence of similar substances of the same kind.

Percentage abundance = (occurrence of substance/total occurrence of substance of similar kind)  × 100

Thus the percent abundance of the black eyed peas in this sample can be calculated as:

total number of beans = 187

number of blacked-eyed peas = 187 - 113 = 74

Percentage abundance = 74/187 × 100 %

                                        = 39.6%

Thus we can conclude, the percentage abundance of the blacked-eyed peas in the sample is 39.6%.

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Name: _____________________________________________ Date: ________________________
Second Read of “Investigating Landforms on Venus”
Gerya and his team wanted to answer the question What formed the novae on Venus? Their idea was that the higher surface temperature and thinner crust of Venus caused the novae to form.
• Reread the final three paragraphs of the “Investigating Landforms on Venus” article.
• Then, highlight or add annotations to parts of the text that relate to the questions next to the article.
• Using your annotations, answer the questions below.
How were the novae on Venus similar to the landforms in Gerya’s computer model? ________________________________________________________________________

Answers

The thing that formed the novae on Venus is As a result of the interaction between mantle diapirs and the lithosphere and radial fracture brought on by the emplacement of novae are believed to have formed.

The parts of the text that relate to the questions  are:

"Rock rising up from the underground""Temperature of Venus was hotter than that of earth"

Novae on Venus similar to the landforms in Gerya’s computer model as the model's output corresponded to Venusian novae. This supported Gerya's hypothesis that novae may emerge as melted rock was allowed to push up toward the surface due to a thinner crust and higher surface temperature.

What is the name of the Venusian landform being studied?

Venus has dome-shaped features called novae. They have cracks radiating from their centers in all directions, making them simple to observe from above. The plural of the word "nova" is "novae."

As a result of the interaction of mantle diapirs with the lithosphere and radial fracture brought on by the emplacement of novae are believed to have formed.

Note that Venus planet is comparable to Earth on the inside and is a tad smaller than Earth. Venus's surface is obscured by dense clouds, so we can't see it from Earth. However, its space missions have revealed that its surface is covered with craters, volcanoes, mountains, and other geological features.

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What is the most abundant element in magma?Question options:OxygenMagnesiumIronSilicon

Answers

ANSWER

Oxygen

EXPLANATION

Magma is the molten or semi-molten natural materials from which all igneous rock is formed

Magma is composed of a mixture of molten materials with varying amounts of dissolved gases and small amount of solid materials.

Magma contains 46.6% of oxygen which is more than half of the total dissolved gases

Therefore, the most abundant element in magma is oxygen

What is characteristic of a covalent bond?

Answers

Answer:below

Explanation:

Some of the properties of covalent bonds are: Covalent bonding does not result in the formation of new electrons. The bond only pairs them. They are very powerful chemical bonds that exist between atoms.

(a) Explain the process by which these dark lines are generated by the elements in the sun's atmosphere.
Specifically, why are they black and not colored, and why do they match the colored line spectra of
those elements?

Answers

These substances absorb black body radiation energy at a very particular wavelength of light that is particular to them. The black (absorption) line is the result of energy being absorbed from the spectrum when an electron jumps from an orbit with low energy to an orbit with high energy.

Why dark lines appear in the absorption spectra?A substance's light transmission spectrum that displays black bands or lines where light has been absorbed by atoms, generating a dip in the spectrum, is called an absorption spectrum. By descending the energy ladder, electrons produce an emission spectrum.Some of the light at specific wavelengths is scattered when it travels through the atmosphere's gas, producing darker bands. The wavelengths of light released when common materials were heated to form lines that became known as "spectral lines" were recorded.

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A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further precipitation occurs. The precipitate is collected by filtration, dried, and weighed. A total of 16.83g PbCl2(s) is obtained from 200.0mL of the original solution. Calculate the molarity of the Pb(NO3)2(aq) solution.

Answers

0.25 Molarity of lead nitrate aqueous solution is there when a solution of nacl is added slowly to  a solution of lead nitrate.

What is molarity and how it is calculated out to be so?Molarity is the number of moles of substance present in one litre of solution and is measured in g/litres.Here in this question is given 16.83 g of lead nitrate is obtained from 200 ml of original solution.To calculate the molarity first we will have to calculate the number of moles of lead nitrate for which the formula is given mass/ molar mass.The mass that is given is 16.83 g and the molar mass is 331.2 g dividing we will get 5.02.Then dividing the number of moles by 0.2 L of solution we will get the answer as 0.25 g/litre molarity as the answer.

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Determine the reaction type Potassium Phosphate + Tin (II) Chlorate →

Answers

Answer

Reaction type = Double displacement.

Explanation

Solution:

[tex]2K_3PO_4\text{ + 3SnCl}_2\rightarrow Sn_3(PO_4)_2+\text{ 6KCl}[/tex]

Reaction type = Double displacement.

Determine the mass of sodium metal that contains the same number of moles as 81.7 g of copper
metal.

Answers

The mass of sodium metal that contains the same number of moles as 81.7 g of copper metal is 2.3 grams.

What is Sodium Metal?

Since sodium is a soft metal, it tarnishes quickly when exposed to air. Water also causes a strong reaction. In some nuclear reactors, sodium is employed as a heat exchanger. It is also used as a reagent in the chemical sector. In contrast, sodium salts are more useful than sodium itself.

Mass of copper =  81.7 g

1 Mole of Cu = 8.17 g

Now, 1 mole of Copper contains 6.022×10^23 atoms

So 0.1 moles of Copper contains 6.022 × 10^22 atoms.

So we need to find the weight of 6.022× 10^22 Sodium atoms.

We know that 6.022 ×10^22 Na atoms is 0.1 mole of Na.

So we need to find the weight of 0.1 mole of Na.

1 mole of Na = 23 g

So 0.1 mole of Na = 2.3 grams

So, answer is 2.3 grams.

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Determine the molarity of NaOH to three decimal places if 21.77 mL of this NaOH were used to titrate 0.305 g of KHP (MM 204.22 g/mol)

Answers

Answer

The molarity of NaOH to three decimal places is 0.069 mol/L

Explanation

Given:

Volume of NaOH used = 21.77 mL

Reacting mass of KHP = 0.305 g

Molecular Mass of KHP = 204.22 g/mol

What to find:

The molarity of NaOH to three decimal places.

Step-by-step solution:

The first step is to write the balanced stoichiometric chemical equation of the reaction:

[tex]HKC_8H_4O_4+NaOH\rightarrow NaKC_8H_4O_4+H_2O[/tex]

From the balanced chemical equation;

1 mol KHP reacts with 1 mol NaOH

Thus, moles of KHP is:

[tex]\text{Moles of KHP }=\frac{Reacting\text{ mass}}{MM\text{ of KHP}}=\frac{0.305\text{ g}}{204.22\text{ g/mol}}=1.493\times10^{-3}\text{ mol}[/tex]

Since, 1 mol KHP reacts with 1 mol NaOH from the balanced equation,

Therefore, 1.493 x 10⁻³ mol KHP will react with:

[tex]\frac{1\text{ mol NaOH }\times1.493\times10^{-3}mol\text{ KHP}}{1\text{ mol KHP}}=1.493\times10^{-3}mol\text{ NaOH}[/tex]

The last step is to calculate the molarity of NaOH:

Conversion factor:

1 mL = 10⁻³ L

21.77 mL = 2.177 x 10⁻³ L

Molarity of NaOH is:

[tex]\begin{gathered} \text{Molarity of NaOH }=\frac{Moles\text{ of NaOH}}{Volume\text{ of NaOH in L}}=\frac{1.493\times10^{-3}\text{ mol}}{2.177\times10^{-3}\text{ L}} \\ \text{Molarity of NaOH }=0.069\text{ mol/L} \end{gathered}[/tex]

Convert 5.25 moles of Ne to particles of Ne

Answers

Answer

Explanation

Given:

Moles of Ne = 5.25 mol

What to find:

The number of particles of Ne in 5.25 moles of Ne.

Step-by-step solution:

Conversion factor: 1 mole of any substance = 6.022 x 10²³ particles

Therefore, 5.25 moles of Ne will be equal

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I need help with this question please

Answers

The 0.2 moles of glucose are present in the 0.400 M solution.

What is molarity?

The amount of a substance in a specific volume of solution is known as its molarity (M).

As given in the solution

Volume = 0.500 L

Molarity = 0.400

By using the molarity formula

M = moles of glucose/Volume in liters

Let's say moles of glucose = X

X=  0.400 * 0.500 = 0.2 moles

Hence, the answer is 0.2 moles of glucose .

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Why is it the principle about the relationship between mass and volume always true of substance, but not always true of mixtures

Answers

Answer:

For pure substances, the mass and volume will always be the same or will always change the same way because all substance are the same throughout.

While for mixtures, you can have varying amount of each component therefore mass and volume will not change the same way for substances

what does it add up to

Answers

Answer:

3N H

    2  2 (The 2 goes in the spaces for the lower numbers)

Explanation:

I need help with this chem equation

Answers

The percentage yield is 81.08.

calculation:-

The percentage yield = actual yield/ theoretical yield × 100

                                   = 150 grams / 185 grams ×100

                                   = 81.08

The percentage yield method is calculated to be the experimental yield divided by way of theoretical yield improved through a hundred. If the actual and theoretical yield ​is the same, the percentage yield is a hundred%. generally, the percentage yield is lower than 100% due to the fact the real yield is regularly much less than the theoretical value.

In chemistry, yield also referred to as reaction yield, is a degree of the number of moles of a product shaped in relation to the reactant consumed, and received in a chemical reaction, typically expressed as a percent.

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Answer the following question: Ethanol, C2H5OH, is considered clean fuel because it burns in oxygen to produce carbon dioxide and water with few trace pollutants. If 500.0 g of H2O are produced during the combustion of ethanol, how many grams of ethanol were present at the beginning of the reaction? When answering this question include the following:

Have both the unbalanced and balanced chemical equations.
Explain how to find the molar mass of the compounds.
Explain how the balanced chemical equation is used to find the ratio of moles (hint: step 3 in the video).
Explain how many significant figures your answer needs to have.
The numerical answer

Answers

The amount, in grams, of ethanol that was present at the beginning of the reaction, would be 430 grams.

Stoichiometric problem

Ethanol burns in oxygen according to the following equation:

[tex]C_2H_5OH + O_2 -- > CO_2 + H_2O[/tex]

The balanced equation of the reaction will be:

[tex]C_2H_5OH + 3O_2 -- > 2CO_2 + 3H_2O[/tex]

The mole ratio of ethanol to water is 1:3.

The molar weight of H = 1 g/mol.

The molar weight of O = 16 g/mol

Molar weight of C = 12

Molar mass of water, [tex]H_2O[/tex] = (1 x 2) + 16 = 18 g/mol

Molar mass of ethanol, [tex]C_2H_5OH[/tex] = (12x2) + (1x5) + 16 + 1 = 46 g/mol

If, mole = mass/molar mass; mole of 500.0 g water will be:

    500/18 = 27.778 moles

Then, the equivalent mole of ethanol that burned, from the stoichiometric mole ratio, would be:

     27.778/3 = 9.259 moles

If, mass = mole x molar mass,

Then, 9.259 moles ethanol = 9.259 x 46 = 425.914

Since the molar mass has the least significant figures (two significant figures), the final answer will also have two significant figures.

Thus, the amount of ethanol that was present at the beginning of the reaction is 430 grams.

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Seven 5.0 mL aliquots of a dilute solution of HCl were titrated with 0.1245 M sodiumhydroxide. The following volumes were needed to neutralize the acid solution:

Answers

In this question, we have to determine the molar concentration of the acid HCl, we have the following information:

5.0 mL of HCl

0.1245 M of NaOH

7 different volumes of NaOH, if we take the average value, we will have 58.8 mL of average

Now we can use the titration formula, which is:

MaVa = MbVb

Ma = molar concentration of acid

Va = volume of acid

Mb = molar concentration of base

Vb = volume of base

Now we add the values into the formula:

Ma * 5.0 = 0.1245 * 58.8

5Ma = 7.32

Ma = 7.32/5.0

Ma = 1.46 M

The molar concentration of HCl, based on the information provided and using the average value of volume for the base is 1.46 M

How many calories are provided by a medium sized quarter pounder with cheese value meal from McDonald’s. The nutrition information is provided below?

protein: 28
carbs: 38
fat: 30

Answers

The calories provided by a medium sized quarter pounder with cheese value meal from McDonald’s is 1050 calories.

What is carbohydrate?

Carbohydrate are defined as carbon, hydrogen, and oxygen atoms make up biomolecules. They are a vital source of energy.

Carbohydrates supply the body with glucose, which is converted into energy for use.

There are three main types of carbohydrates.

SugarStarch Fiber

Proteins are defined as the large biomolecules and macromolecules consisting of one or more long chains of amino acid residues.

There are seven types of proteins.

AntibioticContractile proteinsEnzymesHormonal proteinsStructural proteinsStorage proteins Transport proteins

Fats are defined as the triglycerides are macronutrient compounds that are an important part of our diet, along with carbohydrates, vitamins, and protein.

Thus, the calories provided by a medium sized quarter pounder with cheese value meal from McDonald’s is 1050 calories.

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Calculate the pH of 0.15M sodium acetate

Answers

Answer:

12 +12 24

Explanation:

explationnnnnn ph 0.15=30

At what temperature does sulfur hexafluoride have a density of 0.4450 g/L at 0.8210 atm

Answers

The temperature at which sulfur hexafluoride have a density of 0.4450 g/L at 0.8210 atm is 32.40K.

We know that density is the mass of the substance divided by the volume of the substance.

so mass of SF6 = 146.05 g

Density = 0.4450g/L

D = M/V

0.4450 = 146.05 /V

V= 146.05/ 0.4450

V= 328.20L

Now we know that ideal gas equation,

PV = nRT

Where P = Pressure of the gas = 0.8210 atm

            T=?

            R = 8.314

            V = 328.20L

thus, putting values inthe  formula,

0.8210 × 328.20 = 1 × 8.314 × T

T = 269.45 / 8.314

T =32.40K

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How many moles of Al2O3 are produced if we use 5.7 moles of Al?
4 Al + 3 O2 --> 2 Al2O3

Answers

Moles of Al₂O₃ are produced if we use 5.7 moles of Al is 2.85 moles .

The balanced equation is :

4Al  +   3O₂  ----->   2Al₂O₃

here given that :

moles of Al = 5.7 moles

from the equation it is clear that

four mole of Al produced 2 moles of Al₂O₃

so we can calculated the moles of Al₂O₃ produce by 5.7 moles of Al

5.7 moles of Al produced = (5.7 × 2 ) / 4 moles of Al₂O₃

                                           = 2.85 moles of Al₂O₃

Thus, Moles of Al₂O₃ are produced if we use 5.7 moles of Al is 2.85 moles .

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In an underground gas reserve, a bubble of methane gas (C H4) has a volume of 45.0 m L at 1.60 atm pressure.part A: What volume, in milliliters, will the bubble occupy when it reaches the surface where the atmospheric pressure is 744 m m H g, if there is no change in the temperature and amount of gas?part B: What is the new pressure, in atmospheres, when the volume of the methane gas bubble expands to 125 m L, if there is no change in the temperature and amount of gas?

Answers

Answer:

[tex]0.58\text{ atm}[/tex]

Explanation:

Here, we want to getthe new pressure

From Boyles' law, we know that the volume of a given mass of gas is inversely proprttional to the pressure at a constant temperature

Mathematically:

[tex]P_1V_1\text{ = P}_2V_2[/tex]

where:

P1 is the initial pressure hich is 1.6 atm

P2 is the final pressure which is 744 mmHg (converting to atm by dividing by 760 mmHg, we have the aluea as 744/760 = 0.98 atm

V1 is 45 ml

V2 is ?

[tex]V_2\text{ = }\frac{1.6\times45}{0.98}\text{ = 73.5 mL}[/tex]

Now, the gas expanded from 73. mL to 125 mL

The initial pressure woud now be 0.98 atm

Thus, we have the new pressure as:

[tex]\begin{gathered} P_2\text{ = }\frac{73.5\times0.98}{125} \\ \\ P_2\text{ = 0.58 atm} \end{gathered}[/tex]

During this CHE 113 experiment, you will create calcium oxalate monohydrate from
calcium chloride and potassium oxalate. If 0.444 g of Ca(C₂04) H₂O were produced,
how many grams of potassium oxalate, K₂(C₂O4), was used as a reactant? Assume a
100% yield, which means all of the reactant was converted to product. Report your
answer in grams to 3 decimal places.

Answers

It will take 3.07 m long to reach at its maximum height.

The volleyball will reach at the  maximum height at 0.673 s after it is served.The  Calculating for the height the volleyball  will reach before going to  downwards. Therefore the volleyball will do have a maximum height of 3.07 m  with respect to the ground.

3.78 m Ignoring resistance, the ball will travel upwards until it's velocity is 0 m/s. So we'll first calculate how many seconds that takes.

7.2 m/s / 9.81 m/s^2 = 0.77945s

 The distance traveled is given by the formula d = 1/2 AT^2, so substitute the known value for A and T, giving

d = 1/2 A T^2 d = 1/2 9.81 m/s^2 (0.77945 s)^2 d = 4.905 m/s^2 0.607542 s^2 d = 2.979995

m So the volleyball will travel 2.979995 meters straight up from the point upon which it was launched. So we need to add the 0.80 meters initial height.

d = 2.979995 m + 0.8 m = 3.779995

m Rounding to 2 decimal places gives us 3.78 m.

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3. Given the names of the following compounds, determine their correct chemical formula
e. Pentanitrogen tribromide

Answers

Answer:

N5Br3

Explanation:

10. 250.0 ml of 0.650 M zinc ll chloride is mixed with 200.0 ml of 0.750 M sodium hydroxide according to the equation: ZnCl2 + 2NaOH —> Zn(OH)2 + 2NaCl

What is the concentration of the sodium ion left in solution?

What is the concentration of the chloride ion left in solution?

What is the concentration of the excess zinc ion left in solution?

Answers

Based on the concentration and volume of reactants:

the concentration of Na⁺ ion in solution is 0.333 Mthe concentration of Cl⁻ in solution is 0.722 Mthe concentration of Zn²⁺ left is 0.028 M

What is the concentration of each of the ions in the solution at the end of the reaction?

The concentration of each of the ions in the solution at the end of the reaction is calculated as follows:

Equation of reaction : ZnCl₂ + 2 NaOH —> Zn(OH)₂ + 2 NaCl

moles of ZnCl₂ = 250/1000 * 0.65

moles of ZnCl₂ = 0.1625 moles

Moles of NaOH = 200/1000 * 0.750

moles of NaOH = 0.15 moles

NaOH is the limiting reactant

Moles of Zn(OH)₂ formed = 0.15 / 2

Moles of Zn(OH)₂ formed = 0.075 moles

final volume of solution = 450 ml

the concentration of Na⁺ ion in solution = 0.15/450

concentration of Na⁺ ion = 0.333 M

concentration of Cl⁻ in solution = 0.1625 * 2 / 450

concentration of Cl⁻ = 0.722 M

concentration of Zn²⁺ left = (0.1625 - 0.15)/450

concentration of Zn²⁺ = 0.028 M

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I did lab about solubility using sugar, table salt, and baking soda. My results show High solubility: Sugar>salt>baking soda. But i still don't get it why...Why does sugar high solubility than salt? Why does salt have high solubility than baking soda?

Answers

Sugar has high solubility than salt and baking soda due to the big size of sugar molecules as compared to the molecules of dissolved salt and baking soda.

Why does sugar have a high solubility?

Sugar has high solubility than salt because the sugar molecules are bigger than the molecules of dissolved salt. This allows more water molecules to surround a single particle of sugar that pulling it into a solution faster as compared to salt and baking soda. Sugar dissolves in water due to high solubility because energy is given when the partially polar sucrose molecules can result in the formation of intermolecular bonds with the polar water molecules. The weak bonds that form between the sugar and the water needed the energy to break the structure of both the pure solute which is sugar and the solvent i.e. water.

So we can conclude that the sugar molecules have large than the molecules of dissolved salt, so that's why Sugar has high solubility than salt and baking soda

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How many electrons in an atom can have the quantum numbers in n equal 3, L equal 2

Answers

Answer:

10 electrons in an atom can have the quantum numbers in n=3 and l=2.

Explanation:

In the principal quantum number n=3, we can have, within the orbital quantum number l=2, a maximum of 10 electrons, because there, electrons can be located in the 3d orbital.

A covalent compound is formed by

a. metal atoms losing valence electrons to non-metal atoms
b. non-metal atoms losing valence electrons to non-metal atoms
c. metal atoms sharing valence electrons
d. non-metal atoms sharing valence electrons

Answers

The answer is b I took the test

URGENT HELP PLEASE. Identity the element represented by the orbital diagram below.

Answers

Answer: 4.023938398328392932838398293892839839829382938928938298928392839239829389329808091808208210808208018820801808208093829898081080282

Explanation:

I need to fill in the blanks if you can only do one question can you please do the first one

Answers

Answer

34.40 grams of H₂O are made.

Explanation

The first step is to balance the chemical equation for the reaction:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

From the balanced equation;

1 mole of C₃H₈ produced 4 moles of H₂O

1 mole of C₃H₈ = 44.1 g/mol

1 mole of H₂O = 18.015 g/mol

This implies;

(1 mol x 44.1 g/mol) = 44.1 g of CH₈ produced (4 mol x 18.015 g/mol) = 72.06 of H₂O

Therefore, 23.5 g of CH₈ will produce

[tex]\frac{23.5g\text{ }C₃H₈}{44.1g\text{ }C₃H₈}\times72.06g\text{ }H₂O=38.40\text{ }gram\text{ }H₂O[/tex]

Hence, 34.40 grams of H₂O are made

Other Questions
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