What is the name of this molecule?
A. Hexane
B. Hexyne
C. 2-pentane
D. Pentane

Answer:

The two ways to measure mass are subtraction and taring.

Taking into account the definition of ionization energy, the correct answer is option c: greater than 735 kJ/mol.

Electrons are held in atoms by their attraction to the nucleus, which means that energy is needed to remove an electron from the atom.

Ionization energy, also called ionization potential, is the necessary energy that must be supplied to a neutral, gaseous, ground-state atom to remove an electron from an atom. When an electron is removed from a neutral atom, a cation with a charge equal to +1 is formed.

The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.

The second ionization energy represents the energy required to start a second electron. Its value is always greater than the first ionization energy because the volume of a positive ion is less than that of the neutral atom and the electrostatic force is greater in the positive ion than in the atom.

In other words, the energy required to remove a second electron is called the second ionization energy, and due to the difficulty of removing an electron from a positive particle, its value is greater than that of the first ionization energy.

Finally,  the correct answer is option c: greater than 735 kJ/mol.

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Chemists prefer ribbon diagrams because they make the tertiary structure of the protein molecule easier to trace.

A protein molecule can be represented using several kinds of models. The ball and stick models which are common representations for other molecules can also be applied in the case of protein molecules.

However, the ribbon diagrams are preferred by chemists because they make the  tertiary structure of the protein molecule easier to trace. Also, the ribbon diagram shows the overall path and organization of the protein backbone in the protein molecule.

This kind of structure was first introduced by  Jane S. Richardson  around 1981.

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Answer:

Ribbon diagrams look like the name they hold- ribbons. Therefore, they would be a good option if one were to trace or copy the diagram onto another document, etc. Also, they depict protein very well so if a chemist were studying different types of protein he/she would utilize a ribbon diagram.

Explanation:

Answer:

Explanation:

Modern analytical chemistry can be defined as a science concerned with the development of general approaches, methods, and tools for the study of chemical compositions of substances and analysis of objects; chemical analysis is restricted to the acquisition of information about chemical compositions of substances.

Properties of the Akali Earth Metals.

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BH2Cl is a polar compound because the molecule is non-symmetrical.

An ionic bond is usually formed between atoms having a high magnitude of electronegativity difference between them while covalent molecules tend to have a narrower range of electronegativity difference between atoms in the molecule.

In-between the two extremes are the polar covalent bonds which result from a significant electronegativity difference but less than that required for an ionic bond.

The B-Cl bond in BH2Cl is polar and the entire molecule is non-symmetrical hence the BH2Cl is a polar compound.

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Answer:

eight electrons

Explanation:

Oxygen has atomic number eight. This means that the nuclei of all oxygen atoms have eight protons. A neutral oxygen atom will also have eight electrons. In an oxygen ion with a 2− charge, the number of protons is still 8, but the number of electrons is 10.

Answer:

C.

Explanation:

The arrows represent the Earth spinning on its own axis in this picture.

The volume of NaOH required is 0.08 dm³

To solve this question, we'll begin by writing the balanced equation for the reaction between H₂SO₄ and NaOH. This is illustrated below:

H₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation above,

Mole ratio of the acid, H₂SO₄ [tex](n_{A}) = 1[/tex]

Mole ratio of the base, NaOH [tex](n_{B}) = 2[/tex]

Next, we shall determine the volume of NaOH required to react with H₂SO₄. This can be obtained as follow:

Molarity of the base, NaOH [tex](M_{B}) = 0.505 M[/tex]

Volume of the acid, H₂SO₄ [tex](V_{A}) = 40 mL[/tex]

Molarity of the acid, H₂SO₄ [tex](M_{A}) = 0.505 M[/tex]

[tex]\frac{M_{A} * V_{A}}{M_{B} * V_{B}} = \frac{n_{A}}{n_{B}}\\\\\frac{0.505 * 40}{0.505 *V_{B}} = \frac{1}{2}\\\\\frac{20.2}{0.505 *V_{B}} = \frac{1}{2}[/tex]

Cross multiply

[tex]0.505 * V_{B} = 20.2 * 2\\0.505 * V_{B} = 40.4[/tex]

Divide both side by 0.505

[tex]V_{B} = \frac{40.4}{0.505}\\\\V_{B} = 80 mL[/tex]

Finally, we shall convert 80 mL to dm³. This can be obtained as follow:

[tex]1000 mL = 1 dm^{3}\\\\Therefore,\\\\80 mL = \frac{80 mL * 1dm^{3}}{1000 mL}\\\\80 mL = 0.08dm^{3}[/tex]

Therefore, the volume of NaOH required is 0.08 dm³

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Answer:

120

Explanation:

Answer:

Lysosomes are predominantly found in eukaryotic animal cells and are responsible for breaking down cellular debris

Explanation:

Answer:

Look in explanation

Explanation:

I have shown the Lewis diagram as well as the square and sphere representation.

The mass of the chlorophenol  is obtained from the number of moles and the volume of the solution.

Recal that;

Number of moles = concentration of solution * volume of solution

Concentration = 47.0 mM  or 47.0 * 10^-3 M

Volume = 1.00 litre

Number of moles = 47.0 * 10^-3 M * 1.00 litre

Number of moles = 47.0 * 10^-3 moles

Also;

Number of moles = mass/molar mass

mass = Number of moles * molar mass

Mass = 47.0 * 10^-3 moles * 128.6 g/mol

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Mass = 6.0442 g

Answer:

In redox reactions, electrons are transferred from one species to another. If the reaction is spontaneous, energy is released, which can then be used to do useful work. To harness this energy, the reaction must be split into two separate half reactions: the oxidation and reduction reactions. The reactions are put into two different containers and a wire is used to drive the electrons from one side to the other. In doing so, a Voltaic/ Galvanic Cell is created.

Explanation:

When a redox reaction takes place, electrons are transferred from one species to the other. If the reaction is spontaneous, energy is released, which can be used to do work. Consider the reaction of a solid copper (Cu(s)) in a silver nitrate solution (AgNO3(s)).

he AgNO3(s) dissociates in water to produce Ag+(aq) ions and NO­­−3(aq) ions. The NO3-(aq) ions can be ignored since they are spectator ions and do not participate in the reaction. In this reaction, a copper electrode is placed into a solution containing silver ions. The Ag+(aq) will readily oxidize Cu(s) resulting in Cu2+(aq), while reducing itself to Ag(s).

This reaction releases energy. When the copper electrode solid is placed directly into a silver nitrate solution, however, the energy is lost as heat and cannot be used to do work. In order to harness this energy and use it do useful work, we must split the reaction into two separate half reactions; The oxidation and reduction reactions. A wire connects the two reactions and allows electrons to flow from one side to the other. In doing so, we have created a Voltaic/ Galvanic Cell.

Answer:

Correct answer is option (3) .

Explanation:

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Answer:

phosphoric

Explanation:

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Answer:

hydrochloric acid is a substance that is a binary acid .

Answer:

double displacement reaction

Answer:

Explanation:

SEE THE IMAGE FOR SOLUTION

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Answer:

oxytocin is the answer

Explanation:

oxytocin

Answer:

Solvus: A solvus is a line or surface on a phase diagram which separates a homogeneous solid solution from a field of several phases which may form by exsolution or incongruent melting.

Eutectic: Relating to or denoting a mixture of substances that melts and freezes at a single temperature that is lower than the melting points of the separate constituents or of any other mixture of them.

Eutectoid: relating to or denoting an alloy which has a minimum transformation temperature between a solid solution and a simple mixture of metals.

Peritectic: A peritectic reaction is a reaction where a solid phase and liquid phase will together form a second solid phase at a particular temperature and composition.

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Answer:Dating Using Radioactive Decay

The best-known techniques for radioactive dating are radiocarbon dating, potassium-argon dating and uranium-lead dating.

After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a “daughter” nuclide.

Explanation:d

Explanation:

Magnesium chloride = MgCl₂

aluminum nitrate= Al(NO₃)₃

ammonium sulfate=( NH₄)₂SO₄

Explanation:

acid should be handled with caution because it is dangerous as it may burn the skin

Answer:

Ether is the correct answer

Explanation:

It is based.

Answer:

[tex]Fe_2O_3[/tex]

Explanation:

The formula of Rust is Fe2O3 and also known as ferric oxide or iron oxide

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OAmalOHopeO

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Answer:

Photosynthesis

Explanation:

Answer:

of 160° F. Scrambled eggs need to be cooked until firm throughout with no visible liquid egg remaining.

hope it's help you.

Answer:

144-158°

Explanation:

Answer:

OPTION B .

AS THEY WILL PRODUCE CO,CO2 WHICH WILL MAKE AIR POLLUED AS WELL AS RISE THE TEMPERATURE