how to draw lewis strcutre of ch2s

Answer: The answer is the ''The moon is always lit up by the sun for us to see.''

Explanation: The moon is directly illuminated by the sun.

Answer:

Mass is the independent variable, and boiling point is the dependent variable.

Answer:

the last one, cuz water has a resistance force which slows it down

Explanation:

Answer: C They vibrate the air

Explanation: Edge 22

Answer:

B Nematoda

Explanation:

The given reaction has ΔG value  -12207KJ. Therefore, the given reaction is a spontaneous reaction as value of ΔG is negative.

A spontaneous process refers to anything that happens by itself, without external energy input. A ball is going to roll down an incline, water will flow downhill, ice will melt into water, radioactive elements will decay, and iron will rust, for instance. It is impossible for a reaction to not be spontaneous if it is exothermic (H negative) and increases the entropy for the system (S positive). The system's overall heat capacity is measured in enthalpy. The system's unpredictability is gauged by entropy.

ΔG=ΔH-T×ΔS

ΔG=11-298×41

     = -12207KJ

Since ΔG is negative, reaction is spontaneous

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Answer:

Deductive reasoning  (Brainliest please)

Explanation:Deductive reasoning begins with a general principle and a prediction based on this principle; the prediction is then tested, and a specific conclusion can then be drawn. The first step in the process of inductive reasoning is making specific observations.

Answer:

a. 1.12 L

Explanation:

Step 1: Write the balanced equation for the photosynthesis

6 CO₂(g) + 6 H₂O(l) ⇒ C₆H₁₂O₆(s) + 6 O₂(g)

Step 2: Calculate the moles corresponding to 2.20 g of CO₂

The molar mass of CO₂ is 44.01 g/mol.

2.20 g × 1 mol/44.01 g = 0.0500 mol

Step 3: Calculate the moles of O₂ produced

The molar ratio of CO₂ to O₂ is 6:6. The moles of O₂ produced are 6/6 × 0.0500 mol = 0.0500 mol

Step 4: Calculate the volume occupied by 0.0500 moles of O₂ at STP

At STP, 1 mole of O₂ occupies 22.4 L.

0.0500 mol × 22.4 L/1 mol = 1.12 L

Answer:

2.275x10⁶g of CN⁻¹ were dissolved in the sample

Explanation:

Molarity is defined as the ratio between moles of solute and liters of solution.

If a CN⁻¹ solution has a concentration of 25mM, there are 0.025 moles of CN⁻¹ per liter of solution.

If the sample has a colume of 3.5x10⁶L, moles of CN⁻¹ are:

3.5x10⁶L × (0.025moles / L) = 8.75x10⁴ moles of CN⁻¹ in the sample of water.

In grams (As molar mass of CN⁻¹ is 26g/mol):

8.75x10⁴ moles CN⁻¹ × (26g / mol) = 2.275x10⁶g of CN⁻¹ were dissolved in the sample

Answer:

Explanation:

Here, we want to know the mass of water that would be lost

To get this, we have to divide the molar mass of water, by the molar mass of the hydrate and multiply by the given mass

The molar mass of water in the hydrate is 2(18 g/mol = 36g/mol). 1 mole of water has a mass of 36 g

The molar mass of the anhydrous part is 208 g/mol

Thus, we have the mass as:

Answer:

d

Explanation:

Answer:

An atom

Explanation:

I took test plz mark brainliest

Answer:

H has one mole

Cl has one mole

O has three mole

Explanation:

There is a single Hydrogen, thus there is one mole, this also applies to Cl.

With Oxygen, there are three O's, thus there are three moles of Oxygen.

There are 1 mole of H, 1 mole of Cl, and 3 moles of O.

The number of moles of an atom present in a molecule is classified as the number located in the lower right corner of that atom in the molecule, for example, in the water molecule below:

                                                 \(H_2O\)

you have 2 moles of hydrogen and 1 mole of oxygen.

Thus, in the HClO3 molecule, there are 1 mol of hydrogen, 1 mol of chlorine and 3 mol of oxygen.

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Answer

20.8 moles of H₂O

Explanation

Given:

The moles of iron(III) oxide produced = 5.2 mol

Equation: 3Fe(s) + 4H2O(l) ⇨ Fe3O4(s) + 4H2(g)

What to find:

The moles of water required to produce 5.2 moles of iron(III) oxide.

Solution:

Using the mole ratio of water to iron (iii) oxide in the given equation; which is

4 moles of H₂O produced 1 mole of Fe₃O4

So, x moles of H₂O will produce 5.2 moles of Fe₃O4

Hence, the moles of water required to produce 5.2 moles of iron(III) oxide is 20.8 moles

We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.

Here's an overview of the catalytic cycle, including the necessary details:

i. Chemical structure of the catalyst:

Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]

ii. Molecular geometry of the catalyst:

The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.

iii. Type of reactions involved:

The catalytic cycle involves several reactions, including:

iv. Starting material, reagent, and solvent:

The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).

v. Major and minor end-products:

The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.

vi. Intermediates:

The intermediates in the catalytic cycle include:

These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.

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Answer:

D

Explanation:

According to Avogadro's law, equal volumes of different gases at the same temperature and pressure have equal number of molecules.

It cannot however be a because according to ideal gas equation the number of moles in each container is 0.999moles which translates to 6.019*10^23 molecules

Answer:

Both containers have the same number of molecules.

Explanation:

Answer:

You could use a hydrogen anion which has 2 electrons.

Explanation:

An ion is an atom or molecule with a net electric charge because it has more or less electrons compared to the original atom or molecule.

An anion is a negatively charged ion.

A cation is a positively charged ion.

Normally a hydrogen atom has one proton and one electron.

So a hydrogen anion (H-) means that it has one proton and two electrons, which means the positive charge will be +1 and the negative charge will be -2.

Ultimately, giving the entire molecule a net charge of -1 because -2+1 = -1.

(I hope this helps! I am not 100% sure what's the format of this question. Like is it interactive? online? Did you draw all those electrons on the diagram? or were they given? Are the numbers given as well? or did you type those in? So I just tried my best to give you something that might work.)

Answer:

See explanation

Explanation:

PO4{3-} is phosphate
Sulfite's formula is SO3{2-}
Sulfate is SO4{2-}
OH- is hydroxide
Note: {x±} signifies the charge of the entire molecule

The polyatomic ions in question are phosphite ion, sulfite ion, and sulfate ion.

The formula PO3−4 represents the polyatomic ion called phosphite ion. It is composed of one phosphorus atom bonded to three oxygen atoms. The name of the sulfite ion is SO3−2, and it consists of one sulfur atom bonded to three oxygen atoms. Lastly, the sulfate ion has the formula SO4−2, and it is composed of one sulfur atom bonded to four oxygen atoms.

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Answer: subduction and sea floor spreading

Explanation:

He knew that the continents today were once joined together by fossil records of plants and animals that were found to be on continents far removed from each other. He knew this also by corresponding land forms that matches up as well. What he couldn’t prove is how the land masses would have moved so far away from each other. Subduction and sea floor spreading move the tectonic plates that the continents sit on. That’s what he was missing.

Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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The volume of N₂ at STP=56 L

Given

2.5 moles of N₂

Required

The volume of the gas

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, the volume per mole of gas or the molar volume-Vm is 22.4 liters/mol.

So for 2.5 moles gas :

\(\tt 2.5\times 22.4=56~L\)

Answer:

See Explanation

Explanation:

Given

(a) to (d)

Required

Determine whether the given parameters can calculate the required parameter

To calculate either Density, Mass or Volume, we have

\(Density = \frac{Mass}{Volume}\)

\(Mass = Density * Volume\)

\(Volume = \frac{Mass}{Density}\)

(a) 432 g of table salt occupies 20.0 cm^3 of space

Here, we have:

\(Mass = 432g\)

\(Volume = 20.0cm^3\)

The above can be used to calculate Density as follows;

\(Density = \frac{Mass}{Volume}\)

\(Density = \frac{432g}{20.0cm^3}\)

\(Density = 21.6g/cm^3\)

(b) 5.00 g of balsa wood, density of balsa wood : 0.16 g/cm^3

Here, we have:

\(Mass = 5.00g\)

\(Density = 0.16g/cm^3\)

This can be used to solve for Volume as follows:

\(Volume = \frac{Mass}{Density}\)

\(Volume = \frac{5.00g}{0.16g/cm^3}\)

\(Volume = 31.25cm^3\)

(c) 32 cm^3 sample of gold density of 19.3 g/cm^3

Here, we have:

\(Volume = 32cm^3\)

\(Density = 19.3g/cm^3\)

This can be used to calculate Mass as follows:

\(Mass = Density * Volume\)

\(Mass = 32cm^3 * 19.3g/cm^3\)

\(Mass = 617.6g\)

(d) 150 g of iron, density of Iron = 79.0 g/cm^3

Here, we have

\(Mass = 150g\)

\(Density = 79.0g/cm^3\)

This can be used to calculate volume as follows:

\(Volume = \frac{Mass}{Density}\)

\(Volume = \frac{150g}{79.0g/cm^3}\)

\(Volume = 1.90 cm^3\) Approximated

In organic chemistry, the functional group present in a molecule is identified by the prefix of its name, while the suffix indicates the number, location, and identity of any substituents attached to the parent carbon chain.

The parent chain name is determined by counting the number of carbon atoms in the longest unbranched carbon chain in the molecule. The naming convention helps to identify the type of reaction the molecule can undergo and its reactivity. This information is critical for predicting the chemical behavior of organic compounds.

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K is an metal from the first group on the periodic table, while S is a nonmetal from the 16th group.

The K atom can easily lose one electron, so its valence orbital stays with no electrons.

S is similar to O, it only needs two electrons to complete its valence orbital, so it can easily attract two electrons.

Thus, the atom K will form a cation K⁺ while the atom S will form an anion S²⁻.

When putting them together, they will form an ionic compound, and it has to have a neutral charge. Since K is 1+ and S is 2-, we will need 2 K for each S, so the compound formed will be:

To measure reaction heat under isochoric conditions, a bomb calorimeter is needed.

This device is designed to maintain a constant volume (isochoric) during the reaction, allowing for accurate measurement of reaction heat. To improve the accuracy of the coffee cup calorimeter for measuring reaction heat under isobaric conditions, a modification that could be made is to use a stirring device to ensure uniform mixing of the reactants and to minimize heat loss to the surroundings.

Additionally, a lid with a small hole could be placed over the top of the calorimeter to prevent heat loss while still allowing for pressure equalization. These modifications would help to minimize errors in heat measurement and improve the accuracy of the results obtained.

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A combination of -carbon alkylation and -dicarboxylic acid decarboxylation is required to create methyl ketone from an acetoacetic ester or an alkyl halide. The process involves the use of a secondary halide or a methyl halogen.

How is acetoacetate used by the body?

Acetoacetate and -hydroxybutyrate are metabolic byproducts of fatty acid oxidation that are used as fuel in extrahepatic tissues. The production and use rates have an impact on their blood level. Oxidation increases as their serum levels do as well.

Does the brain use acetoacetate?

Glucose serves as the main fuel source for supplying the brain's energy requirements. However, the brain uses ketones, such as acetoacetate or beta-hydroxybutyrate, as energy sources in some circumstances, such as diabetes, famine, during the nursing period, and the state of deep sleep.

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Answer:

Based on what you have seen in the Doppler Effect Gizmo, what is the best definition of the Doppler effect? A change in the frequency of a wave caused by the motion of the source relative to the observer. The increase in volume of a sound as the source approaches an observer.

Explanation:

We cannot see it its so small

Also yes it matches your hypothesis

Answer:

I believe it is 68

Explanation:

to convert Celsius to kelvins you must add it to 273.15 for example 29 + 273.15 is 302.15

im so very sorry if im wrong.

Answer:

Aqueous NaOH:     soluble

Aqueous NaHCO₃: insoluble

Aqueous Na₂CO₃:  soluble

Explanation:

The organic acid is insoluble. Its salt (ionic) is soluble.

The important principle is:

If you have two acids in a flask, the stronger acid (smaller pKₐ) will protonate the weaker one. The stronger acid will become ionic and therefore more soluble.

1. In NaOH

Let's write the formula for 4-nitrobenzoic acid as HA.

The equation for the reaction is

        HA  +  OH⁻ ⇌ A⁻ + H₂O

pKₐ:  7.15     15.7

HA is the stronger acid. It will protonate the hydroxide ion and be converted to the soluble 4-nitrobenzoate ion.

4-Nitrophenol is soluble in NaOH.

2. In NaHCO₃

        HA  +  HCO₃⁻ ⇌ A⁻ + H₂CO₃

pKₐ:  7.15     6.36

HCO₃⁻ is the stronger acid. It will protonate 4-nitrophenol.

4-Nitrobenzoic acid is insoluble in NaHCO₃.

3. In Na₂CO₃

        HA  +  CO₃²⁻ ⇌ A⁻ + H₂CO₃

pKₐ:  7.15    10.33

HA is the stronger acid. It will protonate the carbonate ion.

4-Nitrophenol is soluble in Na₂CO₃.

Answer:

3224 kJ/mol

Explanation:

The combustion of benzoic acid occurs as follows:

C₇H₆O₂ + 13/2O₂ → 7CO₂ + 3H₂O + dE

The change in temperature in the reaction is the change due the energy released, that is:

3.256K * (10.134kJ / K) = 33.00kJ are released when 1.250g reacts

To find the heat released per mole we have to find the moles of benzoic acid:

Moles benzoic acid -Molar mass: 122.12g/mol-:

1.250g * (1mol / 122.12g) = 0.0102 moles

The dE combustion per mole of benzoic acid is:

33.00kJ / 0.0102moles =

3224 kJ/mol