Does CH3F have a higher boiling point than BRF?

The true statement is \([Fe(OH_2)_6]^ 3^+\) has a low-spin \(Fe^3^+\) ion in an octahedral geometry. This anion allows for exchange of Tl+ with the \(Fe^3^+\) in \([Fe(OH_2)_6]^ 3^+\) by releasing \(4[Fe(CN)_6]\) in the urine.

Octahedral molecular geometry, also called square bipyramidal, describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron.

The mechanism of action of the compound \([Fe(OH_2)_6]_4[Fe(CN)_6]_3\) is an involvement of  the exchange of the toxic Tl+ ion with the\(Fe^3^+\) ion in \([Fe(OH_2)_6]^ 3^+\)

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Explanation:

The reaction is

2Fe+3Cl2

→2FeCl3

So the mol ratio

Cl2÷FeCl3=3÷2

So for 14 mols of F

eCl3

we need 32×14=21

mols of Cl2

The measure of the length of events and the duration of intervals between events is time.

The duration of events or the gaps between them can be measured, compared, or even ordered using time. The lengthy period of time that the Earth's geologic history takes up is known as geologic time. Starting at the beginning of the Archean Eon  formal geologic time runs until the present. Geology is defined as the "Science of the Earth."

Geology is the fundamental Earth science that examines how the earth created, its structure and composition, and the various forces acting on it. It is sometimes known as geoscience or earth science.

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Step 1

The equations used here:

------------

Step 2

Information provided:

[H3O+] = 3.5×10^−7 M

------------

Step 3

Procedure:

Firstly, from (1):

pH = -log [H3O+]

pH = -log (3.5×10^−7 M) = 6.5

----

From (3):

pH + pOH = 14

pOH = 14 - pH

pOH = 14 - 6.5

pOH = 7.5

----

From (2)

pOH = - log [OH-] => [OH-] = 10^-(pOH)

[OH-] = 10^-(pOH) = 10^-(7.5) = 3.2x10^-8 M

Answer: [OH-] = 3.2x10^-8 M

The change in internal energy of the system is 110 kJ.

Change in internal energy is the difference between the energy absorbed by the system and the work done by the system.

To calculate the change in the internal energy of the system, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The change in internal energy of the system is 110 kJ.
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Deprotonation refers to the removal of a proton from a molecule, while an enolate is an anionic species formed by deprotonation of the α-carbon adjacent to a carbonyl group. An enone, on the other hand, is a molecule containing a carbon-carbon double bond and a carbonyl group.

"Deprotonate," "enolate," and "enone" are terms used in organic chemistry to describe specific reactions and functional groups. Let's break down each term:

Deprotonate: Deprotonation refers to the removal of a proton (H+) from a molecule. It is a process that involves the transfer of a proton from a molecule to a base. The resulting species is negatively charged and called an anion.

Deprotonation reactions are common in various organic reactions and play a crucial role in the formation of new bonds and the generation of reactive intermediates.

Enolate: An enolate is an anionic species that contains a carbon-carbon double bond and a negatively charged oxygen or nitrogen atom. Enolates are formed through deprotonation of the α-carbon adjacent to a carbonyl group (such as a ketone or aldehyde).

The formation of enolates is an important step in many organic reactions, such as aldol condensation and Michael addition, as enolates serve as nucleophiles or reactive intermediates.

Enone: An enone is a molecule that contains a carbon-carbon double bond (C=C) and a carbonyl group (C=O) adjacent to each other. Enones are carbonyl compounds that possess a conjugated double bond system. They exhibit unique reactivity due to the presence of both a double bond and a carbonyl group, making them valuable intermediates in organic synthesis.

Enones are involved in various reactions, including Michael additions, Diels-Alder reactions, and cycloadditions, to form complex organic compounds.

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In the reaction of decomposition of potassium  chlorate to give potassium chloride and oxygen gas, there are 6 oxygen atoms present in both reactant side and product side of the reaction.

Decomposition is a type of reaction in which a single substance or reactant decompose or break into its constituent compounds or molecules. Normally decomposition reactions are exothermic and evolve heat to the surrounding.

Potassium chlorate KClO₃ breaks into KCl and O₂. In one mole of KClO₃ there are 3 oxygen atoms. Hence, for 2 moles of potassium chlorate there are 6 oxygen atoms.

The number each elements have to be balanced in both side. Here the number of oxygen on both side is 6. Similarly all other elements are balanced in the given reaction.

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Answer:

which property is least helpful in identifying a sample of matter is (B) VOLUME

Explanation:

volume depend on the amount of substance present and are not useful in the identification of a sample of matter. volume is an extensive property so it is not useful identifying the sample of matter.

The student expected to get exactly 3.5 grammes of Chromium (III) oxide from adding 1.75 grammes of Chromium trinitrate and 1.75 grammes of Sodium oxide. To create the needed amount of Chromium oxide.

To get the mass per mole, divide the reactant's mass by its molecular weight. As an alternative, we might multiply the millilitres of the reactant solution by the grammes per millilitre of the liquid solution. Next, divide the outcome by the reactant's molar mass.

This is because the chemical equation for the reaction between Chromium trinitrate and Sodium oxide is not balanced to produce Chromium(III) oxide.

2Cr(NO₃)₃ + 3Na₂O → Cr₂O₃ + 6NaNO₃

From this balanced equation, we can see that for every 2 moles of Chromium trinitrate, we need 3 moles of Sodium oxide to produce 1 mole of Chromium(III) oxide. This means that the amounts of Chromium trinitrate and Sodium oxide required to produce 3.5 grams of Chromium(III) oxide are:

Amount of Chromium trinitrate = (2/3) x (3.5 grams / molar mass of Chromium trinitrate) = 1.53 grams

Amount of Sodium oxide = (3/2) x (3.5 grams / molar mass of Sodium oxide) = 2.26 grams

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Answer:

A. Alternating single and double bonds

Explanation:

Hydrocarbons i.e. hydrogen and carbon containing compounds, are grouped into two namely: aliphatic and aromatic hydrocarbons. Aliphatic hydrocarbons contains straight or branched chains of carbon and hydrogen atoms in their structure e.g. alkanes, alkenes etc.

On the other hand, aromatic hydrocarbons are cyclic hydrocarbons containing one or more cyclic rings. The benzene ring is the basis of all aromatic hydrocarbons and one characteristics of benzene is that it possesses an alternating single (-) and double bonds (=) in their structure.

Since benzene is a building constituent of aromatic hydrocarbons, an "alternating single and double bond" is a characteristics of aromatic hydrocarbons.

A spontaneous reaction is a reaction that favors the formation of products at the conditions under which the reaction is occurring.

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The arrow in a chemical reaction can be translated as the following:

A. yields

C. react to form

Answer:

8 protons, 10 electrons.

Explanation:

the -2 charge adds 2 electrons–hence, you have 10 electrons while protons remain at 8.

Answer:The answer is D 33

Explanation:

The mass of the child accelerating at 2 m/s² by a net force of 66 N is 33 Kg (Option D)

Force is related to acceleration according to the following equation

Force (F) = mass (m) × acceleration (a)

F = ma

With the above formula, we can obtain the mass of the child

F = ma

66 = m × 2

Divide both side by 2

m = 66 / 2

m = 33 Kg

Thus, the mass of the child is 33 Kg

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Answer:

\(\boxed {\boxed {\sf 63.0 \%}}\)

Explanation:

The percent yield is the ratio of the actual yield to the theoretical yield.

\(percent \ yield = \frac{actual \ yield}{theoretical \ yield} * 100\)

We can substitute the known values into the formula.

\(percent \ yield= \frac{ 14.8 \ g}{23.5 \ g}*100\)

Divide.

\(percent \ yield = 0.629787234043*100\)

Multiply.

\(percent \ yield = 62.9787234043\)

The original measurements for the theoretical and actual yields have 3 significant figures, so our answer must have the same. For the number we calculated, that is the tenths place.

The 7 to the right, in the hundredths place, tells us to round the 9 up to a 0. Since we rounded up to 0, we have to move to the next place to the left and round the 2 up to a 3.

\(percent \ yield \approx 63.0\)

The percent yield is approximately 63.0 percent.

Answer

101.3 mL

Explanation

Given:

The initial temperature, T₁ = 148.5 °C = (148.5°C + 273) = 421.5 K

The initial volume, V₁ = 241.8 mL

Final temperature, T₂ = -96.4 °C = (-96.4°C + 273) = 176.6 K

What to find:

The final volume of the gas.

Step-by-step solution:

The final volume, V₂ of the gas can be calculated using Charle's law formula.

The final volume of the gas is 101.3 mL

In order to separate the mixture of toluic acid, p-bromo-aniline, and anthracene, the difference in their physical properties such as solubility in organic or inorganic solvents is utilized.

The flow chart for the separation method is found in the attachment.

Mixtures are substances that consist of two or more substances that are physically combined together.

The physical properties of the components of the mixture are employed in the separation of the constituents of the mixture

In separating the given mixture, it is first dissolved in dichloromethane, and then dilute NaOH is added to separate the toluic acid in the aqueous phase. The toluic acid is then precipitated by adding HCl.

Dilute HCl is then added to the organic phase to separate p-bromo-aniline into an aqueous phase and then precipitated by adding 10% NaOH.

Anthracene is left in the organic phase.

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Answer:

386 milligrams

Explanation:

Hey there! The answer is:

386 milligrams

Explanation:

To figure this out multiply 0.386 by 1000 because a milligram is 1000x bigger than a gram.

0.386 x 1000 = 386

Also, because it is 1000 times bigger, you can move the decimal over 3 places because there are 3 zeros in 1000.

Let me know if you have any questions! :)

During nuclear fission the target nucleus first combines with the projectile neutron to form a high energy compound nucleus. The extra energy sets up a series of rapid oscillations in it. During fission some mass is always lost in accordance with Einstein's equation.

The splitting of a heavy nucleus when bombarded with a suitable atomic particle into two fragments of comparable masses with the simultaneous release of a huge amount of energy is called the nuclear fission.

The splitting of Uranium - 235 is:

₉₂²³⁵U + ₀¹n → ₅₆¹⁴⁴Ba + ₃₆⁹⁰Kr + 2₀¹n + Energy

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Answer:

A

Explanation:

A certain protein was found to contain 0.793% zinc by mass. The minimum molecular mass of the protein is 8264.46 grams.

Molecular mass is the sum of the all atoms of an element. The molecular mass can be calculated by checking the mass of the atom from the periodic table.

In 100 grams of proteins, we have, 0.793% zinc

The molar mass of zinc is 65.3820 g/mol

0.793 / 65.3820 = 0.0121 moles of zinc

So, in 100 grams of protein

1 mole = 100 / 0.0121 = 8264.46 grams / mol

Thus, the minimum molecular mass of the protein is 8264.46 grams.

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In Earth, only one living organism is able to trap Solar energy or energy from sun with the help of a pigment known as Chlorophyll, and that organism is none other than Green plants.

Why Green plants? Because, Chlorophyll is a n coloured pigment which can trap the sunlight for photosynthesis which is the process of making glucose from raw materials in plants.

Rest options:

Rocks and water are non living organism and can't trap the solar energy. And, animal bodies don't have Chlorophyll pigment, they even obtain their food from plants directly or indirectly.

Hence, the Correct Option is:

\( \large{ \boxed{ \bf{ \red{Option \: B}}}}\)

And we are done !!

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Answer:

D

Explanation:

Its in first person

Answer:

75 g

Explanation:

\(m_1\) = Initial mass of water = 90 g

c = Specific heat of water

\(\Delta T_1\) = Initial temperature difference = \((37.08-22.08)^{\circ}\text{C}\)

\(m_1\) = Mass of water to be added

\(\Delta T_2\) = Final temperature difference = \((37.08-55.08)^{\circ}\text{C}\)

Since, heat energy in the system is conserved we know

\(m_1c\Delta T_1+m_2c\Delta T_2=0\\\Rightarrow m_1c\Delta T_1=-m_2c\Delta T_2\\\Rightarrow m_2=-\dfrac{m_1\Delta T_1}{\Delta T_2}\\\Rightarrow m_2=-\dfrac{90(37.08-22.08)}{37.08-55.08}\\\Rightarrow m_2=75\ \text{g}\)

The mass of water to be added to reach the desired temperature is 75 g.

Answer:

40 litres

Explanation:

using Boyle's law V1P1=V2P2

V1=20 l

P1= 60atm

P2= 30 atm V2=?

substituting we will have that

20×60=V2×30

V2={20×60}/30

V2=40 l

The lack of a spinal column is the  distinguishing characteristic of invertebrates.

These are organisms which lack a backbone(vertebral column) while vertebrates on the other hand have it.

This is why option C was chosen as the most appropriate choice in this scenario.

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