A 5.024 mg sample of an unknown organic molecule containing carbon, hydrogen, and nitrogen only was burned and yielded 13.90 mg of CO2 and 6.048 mg of H2O. What is the empirical formula

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question we have

mass = 2.835 × 34

We have the final answer as

Hope this helps you

Answer:

3

Explanation:

PH = -Log [H+]

PH = -Log [1 × 10^-3]

PH = -Log [10^-3]

Log (10) = 1

PH = -(-3) Log (10)

PH = 3 × 1

PH = 3

Answer:

A.Lithium (Li)

since fluorine and nitrogen gain electron and becomes negative ion.

since magnesium loose two electron.

Answer:

The correct answer is C, tertiary.

The following alcohol is a tertiary alcohol. Hence, option C is correct.

A primary alcohol is a compound in which a hydroxy group, ‒OH, is attached to a saturated carbon atom which has either three hydrogen atoms attached to it or only one other carbon atom and two hydrogen atoms attached to it.

Here, the carbon atom holding the OH group is attached directly to three alkyl groups.

Hence, the following alcohol is a tertiary alcohol.

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A Venn Diagram is a graphical tool that provides information about the relationship between things.

A Venn Diagram is a graphical illustration using circles to show the relationship between two or more things.

In a Venn Diagram, the items that two things share in common are represented by a region in which the two things intersect.

The items that are exclusive to each thing is shown in regions where the circles are separate.

Thus, a Venn Diagram provides information about the relationship between things.

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The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Answer:

(decreasing particle size) C

Explanation: That is one of the answers, if there are more I am sorry.

Answer:

Benzene is an organic chemical compound with the molecular formula C₆H₆. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon.

The index of hydrogen deficiency (IHD) is a measure of the number of unsaturated bonds in a molecule. It can be calculated by subtracting the number of hydrogen atoms from 2 times the number of carbon atoms, and then dividing by 2.

\(C_{6}H_{6}\) (no oxygen)

IHD = \(\frac{(2*6)-6}{2}\) = 3

This means that the molecule contains 3 unsaturated bonds, which can form 3 aromatic rings.

\(C_{7}H_{6}O\) (one oxygen)

IHD = \(\frac{(2*7)-6-2}{2}\) = 3

This means that the molecule contains 3 unsaturated bonds, which can form 2 aromatic rings.

\(C_{8}H_{7}O_{2}\) (two oxygens)

IHD = \(\frac{(2*8)-7-(2*1)}{2}\) = 2

This means that the molecule contains 2 unsaturated bonds, which can form 2 aromatic rings.

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Complete question:

Give a molecular formula for your product if it contains no oxygens. Give the molecular formulas if your product contains one and two oxygens (some may not be possible).

The molecular formula for if my molecule does not have any oxygens is C6H6, if it has one oxygen it would be C7H6O, if it was two it would be C8H7O2.

Calculate the index of hydrogen deficiency, and therefore the number of rings and/or p- bonds in your unknown for each of the molecular formulas in question 3. Show your calculation

Answer:

Boiling of a liquid

The plateau at the lower temperature represents option A. Boiling of a liquid.

At the time when the heating curve should have two flat line or the plateaus so here the lower temperature shows the boiling of the liquid.

As the first plateau shows the melting and the second plateau shows the boiling.

hence, the option a is correct.

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Answer:

Solid Wood

Explanation:

Wood is like a solid block, whereas gases flow freely and liquids spread to fill the shape of their container.

Please let me know if I misunderstood the question, by the way.

In the given reaction, the limiting reactant is C₆H₆ (benzene).

To determine the limiting reactant as well as calculate the mass of HCl produced, compare the moles of each reactant.

The number of moles for each reactant:

Molar mass of Cl₂ = 35.5 g/mol + 35.5 g/mol = 71 g/mol

Moles of Cl₂ = mass of Cl₂ / molar mass of Cl₂

                     = 45 g / 71 g/mol

                     = 0.634 moles of Cl₂

Molar mass of C₆H₆ (benzene) = 12 g/mol + 6(1 g/mol) = 78 g/mol

Moles of C₆H₆ = mass of C₆H₆ / molar mass of C₆H₆

                        = 45 g / 78 g/mol = 0.577 moles of C₆H₆

Determine the stoichiometry between Cl₂ and HCl:

Cl₂ + C₆H₆ → C₆H₅Cl + HCl

Here, we can see that 1 mole of Cl₂ produces 1 mole of HCl.

Thus, the limiting reactant is C₆H₆ (benzene).

Calculate the mass of HCl produced:

Molar mass of HCl = 1 g/mol + 35.5 g/mol = 36.5 g/mol

Moles of HCl produced = moles of C₆H₆ = 0.577 moles

Mass of HCl produced = moles of HCl produced × molar mass of HCl

Mass of HCl produced = 0.577 moles × 36.5 g/mol

                                     ≈ 21.04 g

Therefore, approximately 21.04 grams of HCl will be produced.

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Answer: 3 & 4

Explanation:

Answer:

Bromine

Mercury

Bromine (symbol Br and atomic number 35) is a reddish-brown liquid, with a melting point of 265.9 K. Mercury (symbol Hg and atomic number 80) is a toxic shiny silvery metal, with a melting point of 234.32 K.

It is expected at 1.05 atm the solubility increases if compared to the solubility at 0.222 atm.

In general, an increase in pressure leads to an increase in solubility. In the same way, a decrease in pressure will decrease solubility.

Considering the pressure increased, the most likely result is for the solubility to proportinally increase.

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Answer: Body plans change as new challenges arise.

Explanation:

The mollusks are the invertebrate animals. They live marine environment. They live in shallow waters. They have been found in variety of marine habitats so this indicates their adaptiveness to different conditions. They have body plan that comprises of shell, mantle, radula and muscular foot that helps in survival and adaptation in different conditions. The shell and mantle are hard structures which protect these animals from predators and also help them to camouflage. Also the muscular foot helps in locomotion. Radula helps in feeding. Oysters, snails are some examples of mollusks.

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The mas.s of evaporating dish is 21.345g B.

Explanation:

the atmoc radius across the period

The temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K .

The temperature of a given gas can be calculated using the ideal gas law equation:

PV = nRT

Where;

1.4948 × 92.202 = 1.7379 × 0.0821 × T

137.82 = 0.142T

T = 137.82 ÷ 0.142

T = 965.69K

Therefore, the temperature of a 1.7379 mole of a gas with a pressure of 1.4948 atm and volume of 92.202 L is 965.69K.

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Ancef (Cefazolin) is a first-generation cephalosporin antibiotic that is used to treat bacterial infections. Cefazolin is available in several formulations, including injectable, intravenous, and powder for injection.

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some medicines contain legal ingredients like starch and sugar, and forensic scientists must be able to distinguish between the two. Because courts rely on the data forensic scientists find in their research, it is crucial for them to be able to recognise specific substances.

The ideal technique for this evaluation is Gas Chromatography/Mass Spectrometry (GC/MS), which is frequently used in forensic laboratories. The method offers a quick, semi-automated analysis of the material and often produces enough data to pinpoint the problematic substances. To ascertain whether an unlawful substance is present in the supplied material is the aim of forensic drug chemistry. Law enforcement can seek criminal charges based on the study' findings, and the court can decide on the right sentence.

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

True

Explanation:

The sedimentary particles from which a sedimentary rock is formed can be derived from a metamorphic, an igneous, or another sedimentary rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.

In a protein molecule, the number of amino acid molecules may be as few as d. 50.

Proteins are large macromolecules composed of chains of amino acids. These amino acids are linked together through peptide bonds to form the primary structure of a protein. The number of amino acids present in a protein molecule can vary greatly and depends on the specific protein.

Proteins can range in size from small peptides composed of just a few amino acids to large complex proteins containing thousands of amino acids. The minimum number of amino acids required for a protein to be considered functional is typically around 50. This is because proteins need a certain length and structural complexity to carry out their specific functions.

Proteins play vital roles in living organisms and are involved in various biological processes such as enzyme catalysis, cell signaling, structural support, and immune response. The specific number and sequence of amino acids in a protein molecule determine its unique structure and function.

Therefore, while some proteins may consist of as few as 50 amino acids, larger and more complex proteins can contain thousands of amino acids, enabling them to perform intricate and diverse functions within living systems. Therefore, Option D is correct.

The question was incomplete. find the full content below:

In a protein molecule, the number of amino acid molecules may be as few as

a. 5

b. 5,000

c. 500

d. 50

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