How many 1H NMR signals does CH3OCH2CH(CH3)2 show? How many^1H NMR signals does CH_3OCH_2CH(CH_3)_2 show? Enter your answer in the provided box.
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Answer:

We can solve this by the method of which i solved your one question earlier

so again here molar mass of C12H25NaSO4 is 288.372 and number of moles for 11900 gm of C12H25NaSO4 will be = 11900/288.372

which is almost = 41.26 moles

so to get one mole of C12H25NaSO4 we need one mole of C12H26O

so for 41.26 moles of C12H25NaSO4 it will require 41 26 moles of C12H26O

so the mass of C12H26O = 41.26× its molar mass

C12H26O = 41.26×186.34

= 7688.38 gm!!

so the conclusion is If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) you need C12H26O 7688.38 gm !!

Again i d k wether it's right or wrong but i tried my best hope it helped you!!

Answer:

Molecular Mass

Explanation:

It's asking for the numerical quantity. That quantity would be the Molecular Mass. Take the sample mass and divide it by the molecular mass to get the number of moles.

(14g N * 2) + (1g H *4) = 32g / mol of N2H4

To get # of moles, divide the sample mass by the molecular mass

25g / 32g = 0.78125 moles

Answer:

Single displacement (Substitution)

Explanation:

Answer:

CaCO3

Explanation:

Pure calcite has the composition CaCO3. However, the calcite in limestone often contains a few percent of magnesium. Calcite in limestone is divided into low-magnesium and high-magnesium calcite, with the dividing line placed at a composition of 4% magnesium. High-magnesium calcite retains the calcite mineral structure, which is distinct from that of dolomite, MgCa(CO3)2.[18] Calcite can also contain small quantities of iron and manganese.[19] Manganese may be responsible for the fluorescence of impure calcite, as may traces of organic compounds

The IUPAC names for each of the compounds mentioned:

1. CH₃CH₂C(CH₃)₂CH(CH₂CH₃)CH₃: The IUPAC name for this compound is 4-ethyl-2,2-dimethylhexane.

2. CH₃C(CH₃)CH₂CH₂OCH₃: The IUPAC name for this compound is 1-methoxy-3-methylbutane.

3. CH(NH₂)CH₃: The IUPAC name for this compound is methylamine.

4. CH₃OCH₂CH₂CH₃: The IUPAC name for this compound is 1-methoxypropane.

5. CH(CH₃)₂COOH: The IUPAC name for this compound is 2,2-dimethylpropanoic acid.

Explanation;

To give systematic IUPAC names, we need to follow the rules of IUPAC nomenclature.

1. For the first compound, we start by identifying the longest carbon chain.

2. Then find the substituents attached. Name all the substituents initially.

3. Find the functional group and name the compound per the functional group at the end.

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A down arrow (↓) or (s) are symbols that are used to represent the precipitation product produce in the reaction.

AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3(aq)

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He+, F⁻¹, Al⁺², P⁻³, and Mg⁺² ions are likely to be formed, while the N⁺⁵ ion is not likely to be formed.

Ions are formed when an atom loses or gains electrons, resulting in a net electrical charge.

N⁺⁵ cannot be formed as nitrogen already has five valence electrons and it is difficult to gain or lose electrons to form an ion.

He+ can be formed by the loss of electrons from its only occupied orbital.

F⁻¹ can be formed by gaining one electron to achieve a full valence shell.

Al⁺² can be formed by losing two electrons from its three valence electrons, as it is energetically favorable to lose electrons.

P⁻³ can be formed by gaining three electrons to fill its valence shell, and Mg⁺² can be formed by losing two electrons from its two valence electrons.

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Answer:

File down there

Explanation:

Answer:

Explanation:

We'll assume there is an excess of silver nitrate, so that all 12.0 moles of the magnesium (Mg) will react.

The balanced equation tells us we'll obtain 2 moles of Ag for every 1 mole of magnesium, for a molar ratio of 2/1.

Starting with 12.00 moles Mg, we would therefore hope to find twice that, or 24.00 moles of Ag.

To convert to grams, find the molar mass of Ag from the periodic table.

Ag has a molar mass of 107.9 (to 4 sig figs) grams/mole.

(24.00 moles)*(107.9 grams/mole) = 2590 grams (4 sig figs)

Hands off, it's mine.

The temperatures in the following processes be spontaneous:

1. ΔH = -18 kJ and  ΔS = -60.0 J/K is spontaneous at temperatures above 300 K.

2. ΔH = +18 kJ and ΔS = +60.0 J/K  is spontaneous at temperatures above 300 K.

3. ΔH = +18 kJ and ΔS = -60.0 J/K is spontaneous at temperatures below 300 K.

To determine whether a process is spontaneous or not, we can use the Gibbs free energy equation:

ΔG = ΔH - TΔS

If ΔG is negative, the process is spontaneous at the given temperature. If ΔG is positive, the process is non-spontaneous at the given temperature. And if ΔG is zero, the process is at equilibrium.

Let's analyze each case separately:

1. ΔH = -18 kJ and ΔS = -60.0 J/K

ΔG = -18 kJ - T(-60.0 J/K)

ΔG = -18 kJ + 60.0 J/K × T

For this process to be spontaneous, ΔG must be negative. Since T is positive, the only way to make ΔG negative is if -18 kJ > 60.0 J/K × T. This implies that T must be greater than -18 kJ / 60.0 J/K = 300 K.

Therefore, this process is spontaneous at temperatures above 300 K.

2. ΔH = +18 kJ and ΔS = +60.0 J/K

ΔG = +18 kJ - T(+60.0 J/K)

ΔG = +18 kJ - 60.0 J/K × T

For this process to be spontaneous, ΔG must be negative. Since T is positive, the only way to make ΔG negative is if +18 kJ < 60.0 J/K × T. This implies that T must be greater than +18 kJ / 60.0 J/K = 300 K.

Therefore, this process is spontaneous at temperatures above 300 K.

3. ΔH = +18 kJ and ΔS = -60.0 J/K

ΔG = +18 kJ - T(-60.0 J/K)

ΔG = +18 kJ + 60.0 J/K × T

For this process to be spontaneous, ΔG must be negative. Since T is positive, the only way to make ΔG negative is if +18 kJ > 60.0 J/K × T. This implies that T must be less than +18 kJ / 60.0 J/K = 300 K.

Therefore, this process is spontaneous at temperatures below 300 K.

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The temperature at which the pressure will be equal to 1.75 atm, given that the tank has an initial pressure of 101325 Pa is 257.25 degrees celsius

First, we shall list out the given parameters from the question. This is shown below:

The final temperature can be obtain as follow:

P₁ / T₁ = P₂ / T₂

1 / 303 = 1.75 / T₂

Cross multiply

1 × T₂ = 303 × 1.75

T₂ = 530.25 K

Subtract 273 to obtain answer in degree celsius

T₂ = 530.25 – 273 K

T₂ = 257.25 degrees celsius

Thus, the temperature required is 257.25 degrees celsius

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The correct answer is d) 5.6. Exchangeable H+ ions are those that can be displaced from soil particles by other cations, such as K+.

In this case, the soil was extracted with a 1M KCl solution, meaning that any exchangeable H+ ions would be replaced by K+ ions in the solution.

The fact that the exchangeable H+ concentration in the solution was measured at 2.3 micromolar tells us that the pH of the solution is around 5.6.

This is because pH is a measure of the concentration of H+ ions in a solution, with lower pH values indicating higher H+ concentrations.

Therefore, a soil extracted with a 1M KCl solution and measured to have an exchangeable H+ concentration of 2.3 micromolar would have a pH of approximately 5.6.

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The final chemical formula will be Cu3(PO4)2. The chemical formula for a compound of copper atoms with a +2 charge and covalently bonded molecules with 1 phosphorus and 4 oxygen atoms is Cu3(PO4)

1. The phosphorus oxide group is covalently bonded to form the PO4 molecule, which has a -3 charge as a whole, due to the presence of four oxygen atoms that have a -2 charge. The Cu2+ ions balance the PO43- ions to create a compound with a neutral charge.

There are two PO43- ions in the formula, which means there are eight oxygen atoms and two phosphorus atoms. To make the formula electrically balanced, there must be three copper atoms, each with a +2 charge.

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In the given nuclear reaction the identity of E is Br (Bromine). The correct option is Br.

To determine the identity of E in the nuclear reaction 75/35 Br → E + 0/1 e, we need to balance the reaction and examine the resulting isotopes.

The atomic number of an element represents the number of protons in its nucleus. In a balanced nuclear reaction, the sum of the atomic numbers on both sides must be equal, along with the conservation of mass and charge.

In the given reaction, the atomic number of Br (Bromine) is 35. The beta decay process, denoted as 0/1 e, involves the emission of a beta particle (electron). A beta particle has an atomic number of -1 since it has one less proton than an electron (the atomic number of an electron is 0).

To balance the reaction, the atomic number on both sides of the equation must be equal. Since the atomic number of Br is 35, the resulting element E must have an atomic number of 35 as well. Therefore, the identity of E is Br (Bromine).

Therefore the correct answer is option b.

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The mass of a neutron in atomic mass units is 1.008665 amu

Because neutrons are atomic particles, neutrons are a component of atoms. The English physicist James Chadwick discovered neutrons for the first time in 1932. He found the presence of a particle with no electric charge while conducting radioactivity studies, and he named it the neutron which typically has zero charge.

The atomic mass unit or AMU is a unit of mass used to express the masses of atoms and molecules. The mass of a neutron is almost the same as the mass of a proton whereas the electron is much less massive. In terms of AMU, the mass of a neutron in atomic mass units is 1.008665 amu

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For the reactions shown;
a) MgCl2 + H2SO4 → MgSO4 + 2 HCl

c) 6K + Al2O3 → 3K2O + 2Al

d) 2H2O ----> 2H2 + O2

e) 2C4H10 + 13O2 → 8CO2 + 10H2O

f) will not proceed

g) Will proceed

h) Will proceed

i) Will not proceed

j) Will not proceed

A balanced chemical reaction is a chemical equation that represents equal numbers of atoms of each element involved in the reaction, ensuring that the same amount of matter is present before and after the reaction takes place. The coefficients in the equation indicate the relative proportions of reactants and products.

In the case of the replacement reactions, we know that the substance that is higher in the electrochemical series will replace the substance that is lower in the series as shown.

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Answer:

1340.64

Explanation:

Answer:

The solution is made by adding 4.38 g NaCl to a 250-mL volumetric flask. About 100 mL of water are added and when all the NaCl dissolves water is added up ...

Answer:

Yes

Explanation:

Electrolysis is an example of redox reaction because reduction takes place at cathode and oxidation takes place at anode and both of these reactions take place simultaneously.

Answer:

it's volume also decrease

Examples include carbonated water (i.e. soda water); honey; sugar syrup (used in confectionery); supersaturated drug delivery systems. "SDDS"; and sodium acetate solutions prepared from 160 g NaOAc and 30 mL water.

Answer:

I don’t know what recording station you’re referring to but, When seismic waves reach the seismograph, a graphical record, or seismogram, is produced

Explanation:

The seismic waves hitting the recording station has been resulted in the seismograph, that has been evident of the earthquake.

The seismic wave has been the radiation, with the result of the movement of the earth surface. The movement has been result in the earthquake.

The intensity of the earthquake has been measured by seismograph on the Richter scale. The seismic wave results in the movement of the leads to the production of the seismograph.

The seismic waves hitting the recording station has been resulted in the seismograph, that has been evident of the earthquake.

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Fossil fuels (coal, natural gas, and petroleum), air, water, salt, limestone, sulphur, and some specialty raw materials for special goods, like phosphates and the mineral fluorspar, are all examples of raw materials.

Sand (including silica sand), clay, hard rock, limestone (including metallurgical limestone), gravel, and other building and road-building supplies are considered basic raw materials (BRM). It also includes elements used to improve agricultural soil, such as limesand and gypsum.

Direct and indirect raw materials can be separated into two categories. The finished product contains direct materials. Examples are the fabric used to produce clothing or the wood used to make furniture. Throughout the process, indirect materials are used.

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The complete question is -

What are the sources of chemical raw material ?

Answer:

b. Malic Acid

Explanation:

Malic (organic) Acid is found in apple.

GL

Answer:

The Clean Water Act and the Endangered Species Act.

Explanation:

mining operations must follow these regulations or else they will not be able to use the land

Answer:

Explanation:

The new volume of the gas can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

Since we are finding the new volume

\(V_2 = \frac{P_1V_1}{P_2} \\\)

From the question we have

\(V_2 = \frac{1.56 \times 1}{3} = \frac{1.56}{3} \\ \)

We have the final answer as

Hope this helps you

Answer:

J.J. Thomson

Explanation:

Answer:

D

Explanation:

took the test

The element is most likely to react with Br is Li(Lithium). Alkali metals have very low density, which makes them very reactive, because they want to gain energy and become stable.

Lithium is an alkali metal which belongs to group 1 . Bromine (Br) reacts with many metals, sometimes very vigorously. For instance, with potassium, it reacts explosively. Bromine even combines with relatively unreactive metals, such as platinum and palladium. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example.

Out of the given elements the correct choice is Li.

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Answer:

c

Explanation: