Based on the following chemical equation how many hydrogen atoms are present in the products side?

N2 + 3H2 ----> 2NH3
Question 2 options:


5


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6


1

At pOH value  of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

In this question we will apply the formula

      pH +pOH = 14 . . . . . . . . . . . . .(1)

where pH = concentration of [\(H^{+}\) ] ion

pOH = concentration of [\(OH^{-}\) ] ion

As per the question

pOH =6.0

Putting the value of pOH in equation (1) we get the value of pH

              pH + 6.0 =14

             pH = 14 -6.0

             pH  = 8.0

 The value of pH if the pOH value is 6.0 is 8.0

To find the concentration of \(H^{+}\) ion we will use the following formula

This is calculated by the formula

                                 [\(H^{+}\)} = \(10^{-pH}\)

where we will write the values of pH

Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)

Therefore at  pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

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The complete question is -

What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?

Answer:

down below

Explanation:

Judy Hopps was one of the smaller prey animal while the others were predators or bigger prey animals. Meaning, she was tiny and in some minds, was easier to take down or may not be able to do the job as well as the bigger animals. Also, she was, less noticeably, the only female prey animal.

They give us the balanced equation of the reaction for the production of ammonia. We see that for every mole of N2 that reacts, two moles of ammonia are formed. This corresponds to the ratio, that is, the ratio N2 to NH3 is 1/2. therefore, if 0.40 mol of MH3 is obtained, the moles of N2 that reacted were:

Answer: It reacted 0.20 mol of N2

To calculate the moles of H+ and OH-, you need to know the concentration of the solution in terms of its pH or pOH value.

When you get the pH of the solution, you can use this formula to calculate the concentration of H+ ions: [H+] = 10^(-pH)

Also, if you know the pOH of the solution, you can use this formula to calculate the concentration of OH- ions: [OH-] = 10^(-pOH)

Having determined the concentration of H+ and OH- ions, the molarity formula can be used to calculate the number of moles of each ion as follows: moles = concentration (in mol/L) x volume (in L)

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Explanation:

From the image given;

Number of Protons = 1

Number of Electrons = 1

Number of Neutrons = 0

Positive Charge (From the protons) = + 1

Negative charge (From the electrons) = -1

Atomic mass = Mass of Proton + Mass of Neutron = 1.00727647 amu + 0.000549 amu = 1.00784 amu

Overall Charge = Positive charge + Neutral charge = 1 -1 = 0 (Neutral atom)

Precision relates to the consistency and reproducibility of measurements, while accuracy reflects how close measurements are to the true value.

Precision and accuracy are two important concepts in the context of errors in measurements. While they both pertain to the quality of data, they refer to different aspects.

Precision refers to the degree of consistency or reproducibility in a series of measurements. It reflects the scatter or spread of data points around the average value. If the measurements have low scatter and are tightly clustered, they are considered precise. On the other hand, if the measurements have a high scatter and are widely dispersed, they are considered imprecise.

Accuracy, on the other hand, refers to the closeness of measurements to the true or target value. It represents how well the measured values align with the actual value. Accuracy is achieved when measurements have a small systematic or constant error, which is the difference between the average measured value and the true value.

Errors in measurements can be classified into two types: random errors and systematic errors.

Random errors are associated with the inherent limitations of measurement instruments or fluctuations in the measurement process. They lead to imprecise data and affect the precision of measurements. Random errors can be reduced by repeating measurements and calculating the average to minimize the effect of individual errors.

Systematic errors, on the other hand, are caused by consistent biases or inaccuracies in the measurement process. They affect the accuracy of measurements and lead to a deviation from the true value. Systematic errors can arise from factors such as instrumental calibration issues, environmental conditions, or experimental techniques. These errors need to be identified and minimized to improve the accuracy of measurements.

In summary, precision refers to the degree of consistency or reproducibility of measurements, while accuracy refers to the closeness of measurements to the true value. Random errors affect precision, while systematic errors affect accuracy. To ensure high-quality measurements, both precision and accuracy need to be considered and appropriate techniques should be employed to minimize errors.

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Answer:

Explanation:

Here, we want to give a definition

Delta H of a reaction is the change in ethalpy that occurs at the end of the reaction. It is the end result of heat changes that occur in a chemical reaction

It describes what occurs at the end of the reaction

For instance, it is negative for an exothermic reaction which indicates that heat is given off. It is positive for an endothermic reaction, meaning heat is absorbed

Mathematically:

Answer:

A. Decrease

B. Increase

Explanation:

A. A lysine side chain is brought into proximity:

lysine is basic in its nature, it would have to stabilize the electrostatic interaction and also weak interactions existing among the acidic amino acids and hydrogen bond. This would then reduce or decrease the pH and thus pKa of the protein.

B. The effect of this on pKA is an increase on the pKA. The carboxyl group is acidic. When it is removed, it would then cause the pKA to be increased. There would be accumulation of more negative change by basic amino acids increasing the pKA.

Answer

The sodium acetate solution will be more basic because it is a salt formed from a weak acid and a strong base. Salt derived from a strong base and weak acid is usually basic.

However, acetic acid is a weak organic acid that dissociates partially in water and releases part of its hydrogen ions concentration.

Answer:

82 gallons

Explanation:

There are 3.785 liters in one gallon. In order to get the amount of gallons, divide the amount of liters by 3.785.

310 L ÷ 3.785 L/gal = 81.89 gallons ≈ 82 gallons

• The bond that exist between the CCl4 compound ,forms a covalent bond ,, this can be illustrated in the diagram below:

• We can see that it contains four non-polar covalent bond between carbon and chloride

Answer:

question not clear can u rewrite

Answer:

Kc=[[CO][H2]3[CH4][H2O]

3.90=(0.30)(0.10)3[CH4]×0.02

[CH4]=0.023.90×0.30×(0.10)3=5.85×10−2 M

Thus, the concentration of methane in the mixture is 5.85×10−2 M.

There are 7.708 x 10²² atoms present in  25.8 g of Hg.  

The number of atoms in an element is represented by the Avogadro's number, which tells us the number of atoms or molecules that are present in a mole of a substance.The  number is 6.0221415 x 10²³

To get  this, when given the mass of the element, we  must first

Remember that Number of moles =Mass/Molar mass

a. 25.8 g of Hg  

Number of moles = 25.8g of Hg /200.59 g/mol =0.128moles

Nmber of atoms =0.128moles x 6.0221415 x 10²³=7.708 x 10²² atoms

b. 0.0340 g of Zn

Number of moles = 0.0340g of Zn /65.38 g/mol =0.000520moles

Nmber of atoms =0.000520x 6.0221415 x 10²³=3.132 x 10²⁰atoms

c. 150 g of Ar

Number of moles = 150g of Ar /39.948 g/mol =3.7548moles

Nmber of atoms =3.7548molesx 6.0221415 x 10²³=2.261 x 10²⁴atoms

d. 0.124 g of Mg

Number of moles = 0.124g of Mg /24.305 g/mol =0.005moles

Number of atoms =0.005molesx 6.0221415 x 10²³=3.011 x 10²²atoms

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Answer:

There are 7.708 x 10²² atoms present in 25.8 g of Hg.

Number of Atoms

The number of atoms in an element is represented by the Avogadro's number, which tells us the number of atoms or molecules that are present in a mole of a substance.The number is 6.0221415 x 10²³

To get this, when given the mass of the element, we must first

find the moles

Then multiply the amount of moles by Avagadro's number

Remember that Number of moles =Mass/Molar mass

a. 25.8 g of Hg

Number of moles = 25.8g of Hg /200.59 g/mol =0.128moles

Nmber of atoms =0.128moles x 6.0221415 x 10²³=7.708 x 10²² atoms

b. 0.0340 g of Zn

Number of moles = 0.0340g of Zn /65.38 g/mol =0.000520moles

Nmber of atoms =0.000520x 6.0221415 x 10²³=3.132 x 10²⁰atoms

c. 150 g of Ar

Number of moles = 150g of Ar /39.948 g/mol =3.7548moles

Nmber of atoms =3.7548molesx 6.0221415 x 10²³=2.261 x 10²⁴atoms

d. 0.124 g of Mg

Number of moles = 0.124g of Mg /24.305 g/mol =0.005moles

Number of atoms =0.005molesx 6.0221415 x 10²³=3.011 x 10²²atoms

Explanation:

To solve this problem, we need to consider the energy required to warm the ice cube from -18.5°C to 0°C, the energy required to melt the ice cube, and the energy required to warm the melted water from 0°C to 55°C. Let's calculate the energy for each step and determine the number of ice cubes needed.

Warming the ice cube to 0°C:

The specific heat capacity of ice is 2.05 J/g°C. The temperature change is from -18.5°C to 0°C. Therefore, the energy required to warm the ice cube can be calculated as:

Energy = mass × specific heat capacity × temperature change

Energy = 24 g × 2.05 J/g°C × (0°C - (-18.5°C))

Energy = 24 g × 2.05 J/g°C × 18.5°C = 899.4 J

Melting the ice cube:

The heat of fusion (specific latent heat of fusion) of water is 334 J/g. We need to determine the energy required to melt the ice cube. The mass of the ice cube is 24 g, so the energy required can be calculated as:

Energy = mass × heat of fusion

Energy = 24 g × 334 J/g = 8016 J

Warming the melted water from 0°C to 55°C:

The specific heat capacity of water is 4.184 J/g°C. We need to determine the energy required to warm the melted water from 0°C to 55°C. The mass of the melted water can be calculated by subtracting the mass of the ice cube that melted from the initial mass of the ice cube (24 g).

Mass of melted water = 24 g - 24 g = 0 g (since all the ice melted)

Therefore, no additional energy is required for this step.

Now, let's add up the energy required for each step to determine the total energy needed to cool the coffee from 85°C to 55°C:

Total energy required = Energy to warm the ice cube to 0°C + Energy to melt the ice cube

Total energy required = 899.4 J + 8016 J = 8915.4 J

Given that each ice cube provides 8915.4 J of energy, we can determine the number of ice cubes needed to cool the coffee.

Energy per ice cube = 8915.4 J

Energy required to cool the coffee = Total energy required = 8915.4 J

The number of ice cubes needed = Energy required to cool the coffee / Energy per ice cube

Number of ice cubes needed = 8915.4 J / 8915.4 J = 1

Therefore, you would need to add 1 ice cube to your 355 mL cup of coffee to bring it to 55°C.

The correct answer is A. 1.

Answer: The burning of fossil fuels releases carbon dioxide, methane and other greenhouse gases into the atmosphere. These gases trap heat in the atmosphere, leading to a gradual increase in global average temperatures, known as global warming. This phenomenon has serious impacts on our environment and ecosystems, including extreme weather events and rising sea levels.

The density of pure water is 1 g/cm^3.

Its density is 0.98 g cm 3 at room temperature, in comparison with the handiest zero.92 g cm 3 for ice, a reality that has to be defined through atomic, and molecular concepts. If ice has been no longer much less dense than water, it might sink, having a devastating impact on lake backside ecosystems. believe it or now not, ice is honestly about 9% much less dense than water. for the reason that water is heavier, it displaces the lighter ice, causing the ice to glide to the pinnacle.

The density of ice is about 90 percent that of water, but that could range because ice can contain air, too. meaning that about 10 percent of an ice cube or iceberg will be above the water line. The density of water is maximum at four∘C, and the density of the ice is much less than the water due to its susceptible intermolecular pressure of attraction. as the density of water is more, it's miles heavier than ice. therefore ice floats on the floor of the water. Ice continually floats due to the fact it's far less dense than everyday water. because frozen water molecules shape a crystal.

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Answer:

1- damp

meaning: slightly wet

2-stain

meaning: smear

3-scrub

meaning: rub

4-rust

meaning: stain form iron

5-bleach

meaning: expose under the sun

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Answer:

propene

Explanation:

According to the rules,the name of hydrocarbon:root word+suffix=prop+ene=propene

pH = 1.92, acidic

pH = 8.24, basic

pH = 11.41, basic

pH = 4.34, acidic

To calculate the pH of a solution, we use the formula:

pH = -log[H+]

where [H+] is the concentration of hydrogen ions in moles per liter.

For [H+] = 1.2 x 10^-2 M:

pH = -log(1.2 x 10^-2) = 1.92

This solution is acidic.

For [H+] = 5.8 x 10^-9 M:

pH = -log(5.8 x 10^-9) = 8.24

This solution is basic.

For [H+] = 3.92 x 10^-12 M:

pH = -log(3.92 x 10^-12) = 11.41

This solution is basic.

For [H+] = 4.52 x 10^-5 M:

pH = -log(4.52 x 10^-5) = 4.34

This solution is acidic.

So, the pH and nature of the solutions are:

pH = 1.92, acidic

pH = 8.24, basic

pH = 11.41, basic

pH = 4.34, acidic

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As per the balanced reaction of Al and oxygen gas, 4 moles of Al needs 3 moles of oxygen gas. Hence, 7 moles of Al needs 5.2 moles of O₂.

Aluminum metal is more reactive towards oxygen and it forms oxides on its surface. The balanced chemical equation of the reaction between Al and oxygen is written as follows:

\(\rm 4 Al + 3O_{2}\rightarrow2 Al_{2}O_{3}\)

As per this reaction, 4 moles of aluminum needs 3 moles of oxygen molecule. Then, the number of moles oxygen molecule required to react with  7 moles of Al is :

no.of moles of O₂  = (7×3)/4 = 5.2

Therefore, 5.2 moles of oxygen gas is required to completely react with 7 moles of aluminum metal.

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The chemical equation similar to a mathematical equation as equal sign means both sides . The differential equation is used as a model a natural phenomenon.

The chemical equations and mathematical equation have lot of common things. The balancing of equation and algebraic equation have similarities. we use differential equation is used as a model  a natural phenomenon. chemical equation like the math's equation must be balanced. some basic concepts of math's are used in chemistry to balance equation.

Thus, The chemical equation similar to a mathematical equation as equal sign means both sides . The differential equation is used as a model a natural phenomenon.

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Answer:

The chemical equation similar to a mathematical equation as equal sign means both sides.

Explanation:

Chemical equations and mathematical equations have a lot in common. The equal sign in a math equation means that both sides, however they're written, are equivalent expressions of the same thing: 2(3) - 4 = 5(2) - 8 ← Try it for yourself. The arrow or arrows in a chemical equation mean the same thing.

Answer:

We need more? What else is in the question? This is unanswerable.

Explanation:

Answer:

the  number of laps in the case when he run for 50 minutes is 18,333.33

Explanation:

The computation of the number of laps in the case when he run for 50 minutes is shown below:

Given that

He runs 440m lap in 1.2 minutes

So in 50 minutes he can have laps of

= 440 × 50 ÷ 1.2

= 18,333.33 laps

hence, the  number of laps in the case when he run for 50 minutes is 18,333.33

Three different imfs were covered in class: hydrogen bonds, london dispersion forces, and dipole interactions. The london dispersion forces are the weakest of all, although they are found in high concentrations in extremely big compounds.

Dipole dipole forces are the attractive interactions between two polar molecules, such as HCl, where one atom, here H, has a small positive charge and the other, here Cl, has a slight negative charge. London forces develop between two non-polar molecules as a result of a momentary deformation of the electron cloud.

Hydrogen forces are weak organic compound bonds, sometimes known as hydrogen bonds and the three troops mentioned above are known as vanderwaal forces. Van der Waals forces, which are mild electric forces that draw together neutral molecules in gases, liquid gases, solidified gases, and almost all organic compounds of solids and gases.

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Nitrogen G is a colorless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter of nitrogen.

Nitrogen is an essential gaseous element with an atomic number of 7 and an atomic weight of 14.0067. Nitrogen gas has two particles of Nitrogen therefore, the molecular formula of this gas is N2. It is a non-metallic element that settled Group 15

nitrogen. [ nī′trə-jən ] N. A nonmetallic element that constructs up about 78 percent of the atmosphere by capacity, Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table

So we can conclude that Nitrogen is the chemical element with the symbol N and atomic number 7.

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Answer:

0.054 moles of carbon dioxide will be produced

Explanation:

Step 1: Data given

Number of moles oxygen = 0.085 moles

Step 2: The balanced equation

2C8H18 + 25O2 → 16CO2 + 18H2O

Step 3: Calculate moles of carbon dioxide

For 2 moles octane we need 25 moles oxygen gas to produce 16 moles carbon dioxide gas and 18 moles water vapor

0.0544

For 0.085 moles O2 we'll have 16/25 * 0.085 = 0.054 moles CO2

0.054 moles of carbon dioxide will be produced

1129.9 grams of rock salt, NaCl needs to be added to a 3.78 kg of ice, to get the temperature to drop to -19C .

Freezing point depression refers to a property of solutions where addition of a solute lowers the normal freezing point of the solvent.

The Blagden's Law given as the equation above is used to determine the freezing point depression of ice:

where;

For NaCl, i = 2

Kf for water/ice = 1.86 °C kg/mol

molalityof NaCl = (mass/molar mass

l)/kg of ice

molar mass of NaCl = 58.5

mass of ice = 3.78 kg

Let molality of NaCl = m

ΔT = 19 °C

Substituting the values:

19 = 2 x 1.86 °C kg/mol x m

m = 5.11 mol/kg

mass of NaCl = 5.11 × 3.78 × 58.5

mass of NaCl = 1129.9 g

Therefore, the mass in grams of rock salt, NaCl that needs to be added to a 3.78 kg of ice, to get the temperature to drop to -19C is 1129.9 g

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Answer:

It is like about a attraction between atoms, molecules, and more.

The electron carriers NADP+ and ATP get the hydrogen atoms from the water molecule that has been oxidised. They are employed in the light processes to provide energy for the cell.

Water is oxidised to create oxygen in photosynthesis's light processes. An electron carrier molecule like NADP+ receives the hydrogen ions from the water molecule. As a result of this electron transfer, NADPH is produced, serving as a source of reducing energy for the Calvin cycle, the subsequent step in the photosynthetic process. The hydrogen ions are used in this process to create glucose, a sugar molecule that gives the plant energy. As a byproduct of photosynthesis, oxygen is created when water is oxidised and released into the atmosphere. By creating more than half of the oxygen in the air we breathe, this process contributes significantly to sustaining the Earth's atmosphere in addition to providing energy for the plant.

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