Calculate the mass of water produced when 2.78 g of butane reacts with excess oxygen.
Express the mass of water numerically in grams.

Answer:

C, Movement

Explanation:

Answer:

Explanation:

Isomerism is the occurrence of two or more compounds with the same molecular formula but different structures. Isomers with the same molecular formula and belonging to the same homologous series tends to have similar chemical properties but slightly different physical properties as a result of their constitutional (structural differences).

Thus,as the number of carbon atoms in a molecule increases , the number of isomer also increases. In the given question C7H16 is known as heptane which have nine (9) possible constitutional (structural) isomers.

The main objective is to provide the names for the constitutional  isomers  with the molecular formula C7H16.

In  the attached file below; we've shown the possible isomers of heptane (C7H16). and we've identify them by naming them.

One of the ways to minimize a collision is to slow down: When you can't find an escape and you're definitely going to collide with something, you should slow your vehicle down as much as possible.

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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:

A

Explanation:

Sana makatulong tong answer ko

The total number of molecules in 34.0 g of ammonia is equal to 12.044×10\(^23\) molecules according to the concept of Avogadro's number.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.

In the given example,number of molecules is determined as follows,

17 g ammonia has 6.022×10²³ molecules

So,34 g ammonia has, 34×6.022×10²³/17=12.044×10²³ molecules.

Hence, the total number of molecules in 34 g of ammonia is 12.044×10²³ molecules.

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Your question is incomplete, but the most probable answer is 12.044×10²³ molecules.

Answer:

31.2 g of CuSO4.5H2O.

Explanation:

What is given?

Molarity = 0.5 mol/dm³ (0.5 mol/L),

Volume = 250 mL = 0.25 L,

Molar mass of CuSO4.5H2O = 249.72 g/mol (you can calculate this amount using the periodic table).

Step-by-step solution:

Let's remember the concept of molarity: The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, divide the moles of solute by the volume of the solution expressed in liters:

If we want to find the mass of CuSO4.5H2O in the solution, we have to find its number of moles, so let's clear for this value and replace the given data, like this:

We have 0.125 moles of CuSO4.5H2O, and the final step is to find its mass using the given molar mass, like this:

The answer is that we have 31.2 g of CuSO4.5H2O in the solution.

Answer:

the amount of water vapor in the air compared to the amount it can hold

Explanation:

By definition, relative humidity is equal to the partial pressure of water divided by the total amount of water that the air can hold at that temperature. The last one basically restates the definition. (Partial pressure is the number of particles of a substance divided by the total number of particles.)

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Answering so you can give the other person brainliest!

Answer: The answer is incus

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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To determine the pH of a solution based on the hydronium ion concentration, you can use the equation:

pH = -log[H₃O⁺]

where [H₃O⁺] is the concentration of hydronium ions.

In this case, the hydronium ion concentration is 6.5x10^-4 M.

Calculating the pH:

pH = -log(6.5x10^-4)

= -log(6.5) - log(10^-4)

= -log(6.5) + 4

Using a calculator or logarithmic tables, you can find that the logarithm of 6.5 is approximately 0.81.

pH ≈ 0.81 + 4

pH ≈ 4.81

Rounding to the nearest whole number, the pH of the solution is approximately 5.

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The experimental procedure used to study how attention affects the processing of competing stimuli would be dichotic listening.

Dichotic listening is an experimental technique used to study selective attention in the auditory domain.

In a typical dichotic listening task, different sounds are presented simultaneously to both ears, with different stimuli presented to each ear. Participants are asked to attend to one ear (the "attended ear") and to ignore the other ear (the "unattended ear"), while listening to the sounds.

After the sounds have been presented, participants are typically asked to recall or identify the sounds presented to the attended ear. The task allows researchers to investigate the mechanisms underlying selective attention in the auditory system and to study factors that influence the selection and processing of auditory information.

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Answer:

Explanation:

"Wet" is not a scientific description - it means something that contains water. As water cannot contain water, water is not wet.

Answer:

Explanation:

water is not wet cuz' water make other things wet

The molecular mass of X is less than that of Y.

Diffusion is the movement of molecules of substances from regions of high concentration to regions of low concentration.

The diffusion of gases occur fastest and depends on the molecular masses of the gases.

The higher molecular mass of a gas, the slower, the rate of diffusion, and vice versa.

Therefore, it ca be concluded that the molecular mass of X is less than that of Y.

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Answer:

0.76 mol

Explanation:

There is 0.025032542304996 mol in 1 gram of Argon.

In 30.4 grams of argon, there is 0.7609892860718934 mol.

Answer:

1.07

Explanation:

Did the assignment

Answer:

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.

Answer:

Explanation:

The answer is Xe.

You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

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Answer:

c

Explanation:

The Sun rotates at different rates at different latitudes on the Sun

The sun revolves around its axis like a ball in motion. One cycle of the sun takes approximately 27 days. But the sun rotates at various rates in various parts. The sun's equator rotates more quickly than its poles. Differential rotation is the name given to this phenomena.

The depth of the sun also affects how quickly it rotates, with the core regions rotating more slowly than the outer regions.

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Missing parts;

Which statement about the Sun's rotation is TRUE?

The Sun rotates only at the equator, where the sunspots are found; the rest of the Sun does not rotate

Only the atmosphere of the Sun rotates, not the main body of the Sun

The Sun rotates at different rates at different latitudes on the Sun

The Sun rotates once a day

The Sun does not rotate; only planets rotate

The molecular mass of tris (trisaminomethane) is 121 g/mol and the mass of the compound required to react with the acid is 3.5 x 10⁻³ g.

Trisaminomethane is an organic compound with the formula C₄H₁₁NO₃, and the molecular mass is calculated as follows;

C₄H₁₁NO₃ = 4(12) + 11(1) + (14) + 3(16)

C₄H₁₁NO₃ = 121 g/mol

The mass of the compound required to react with the given volume of the acid is calculated as follows;

molarity = reacting mass / volume (liters)

0.1 = reacting mass / 0.035 L

reacting mass = 0.1 x 0.035

reacting mass of the compound = 3.5 x 10⁻³ g

Thus, the molecular mass of tris (trisaminomethane) is 121 g/mol and the mass of the compound required to react with the acid is 3.5 x 10⁻³ g .

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Answer:

I Believe it is 4 orbitals s,p,p,p or aka sp^3

Explanation:

Answer:

Four because its hybridization is SP3 which means one s and three p orbitals combine to form hybrid orbitals

Explanation:

Answer:

To prepare vegetables for finishing by grilling, sautéing, pan frying, deep frying, or stewing, you should parboil them to cook them to partial doneness.

Answer:

Hello

you're answer should be E.HOCH2CH2OH

hope this answer is correct

The substance with the highest surface tension - e. HOCH2CH2OH.

Surface tension is the elastic tendency of a fluid, caused by the attraction of particles in the surface which makes it acquire the least surface area.  

Thus, The substance with the highest surface tension - e. HOCH2CH2OH.

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Answer:

b no

Explanation:

because it is decomposing into two elements

Answer:

D. A pond freezing over is not a chemical reaction, it is a physical reaction.