Answer quick please

Answer:

1. c. greater than zero, and equal to the rate of the reverse reaction.

2. d. greater than zero, and greater than the rate of the reverse reaction.

3. c. greater than zero, and equal to the rate of the reverse reaction.

4. b. some, but less than 217 mmol.

Explanation:

Dynamic equilibrium is only attainable in a closed system. When dynamic equilibrium has been attained in a closed system, the rate of forward reaction becomes exactly the same as the rate of reverse reaction.

If the equilibrium of the system is disturbed by removal of one of the products, the equilibrium position will shift to the right thereby yielding more reactants.

After some time, equilibrium is reestablished and rate of forward reaction is once again equal to the rate of reverse reaction.

As the reaction proceeds,  the reactants are used up and their concentration at equilibrium is usually less than the initial concentration at the commencement of the reaction.

Answer:

The passage of genetic instructions from one generation to another

Explanation:

The one that is most accurate definition of heredity is the passage of genetic instructions from one generation to another. The correct option is B.

Heredity, also known as inheritance or biological inheritance, is the transmission of traits from parents to their offspring; the offspring cells or organisms acquire the genetic information of their parents through reproduction.

Genes are composed of DNA (deoxyribonucleic acid), which contains instructions for cell function as well as the characteristics that distinguish you.

Each biological parent gives you half of your genes, and you may inherit a gene mutation from one or both of your parents. Sometimes genes change as a result of problems with the DNA (mutations).

Hereditary theory holds that many physical characteristics can be passed down from generation to generation via DNA, by passing on a set of instructions or genes in DNA to offspring. You pass on the physical characteristics that you have.

Thus, the correct option is B.

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Answer:

stop moving

Explanation:

Answer: keep the same inertia

Imagine two people in a tug-of-war. If both sides are balanced, then this means that the flag in the middle won't move. This idea applies to any object in which multiple forces are applied to it. If the forces cancel out, then the object will stay at rest if it's already at rest. If the object is in motion, then it will stay in motion. This is Newton's First Law of Motion. It describes inertia of an object, which is the tendency of it to speed up or slow down (more or less).

The mole ratio of H2SO4 and H2O in the equation = 3:3

Given

Reaction

Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O

Required

Balanced equation

Solution

Fe₂O₃ + H₂SO₄ → Fe₂(SO₄)₃ + H₂O

aFe₂O₃ + bH₂SO₄ → Fe₂(SO₄)₃ + cH₂O

Fe, left = 2a, right=2⇒2a=2⇒a=1

S, left=b, right=3⇒b=3

H, left = 2b, right = 2c⇒2b=2c⇒2.3=2c⇒c=3

The equation becomes :

Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O

Explanation:

A compound is a pure substance formed by the combination of two or more kinds of atoms or elements joined together in a definite grouping.

An mixture is an impure substance made up of different types of substances.

Here are some of the differences between them;

Examples of compounds are water, sodium chloride, hydrochloric acid

                     Mixtures are air, ocean water, alloys, et.c

Answer:

hello your question is incomplete attached below is the complete question

Write the balanced equation for the formation of the Grignard reagent from bromobenzene. Include all reagents and products BUT NOT SOLVENTS.

answer : attached below

Explanation:

I mol mg + 1 mol bromobenzene = 1 mol Grignard

attached below is the balanced equation for the formation of the Grignard reagent from bromobenzene

Answer:

here you go

Explanation:

Answer:

HNO₃ (aq) —> H⁺ (aq) + NO₃¯ (aq)

Explanation:

From the question given above

HNO₃ + H₂O —> ?

Nitric acid, HNO₃ reacts with water, H₂O to form aqueous solution of nitric acid as illustrated below:

HNO₃ + H₂O —> HNO₃ (aq)

Nitric acid is a strong acid and, so will ionised completely when dissolved in water. This is illustrated below:

HNO₃ (aq) —> H⁺ (aq) + NO₃¯ (aq)

one if them is phosphate

Answer:

See answer and picture below

Explanation:

In this case, the key to get an idea of how is the starting ether is with the final product and the empirical formula of the ether.

First, the empirical formula of the ether gives us information of the structure of the ether. This ether could be either an alkene, alkane or cycloalkane.

Alkane cannot be because alkane's formula is CnH(2n+2), so it's either an alkene or cycloalcane (CnH2n).

However, as we can see, it reacts with HI in excess, so, it cannot be an alkene because in this case the acid will react with the double bond of the ether too forming another product. This discart the fact that the ether has a double bond. So it has to be a cycloalkane.

As the innitial structure it's an ether, it should be either a cyclohexane or cyclopentane with a methyl group attached. So, how can we know which of these structures is? well, we can actually do the reaction with both reactants and see which match. In the attached picture you have the answer.

Hope this helps.

The starting ( original ) structure of ether after the entire reaction above is given in the picture attached to this answer sheet

Ethers are also one of the classes of organic compounds that contain an ether group ( an oxygen atom connected to two alkyl or aryl group )

They have the general formula R–O–R′, where R and R′ represent the alkyl or aryl groups.

Ethers; however can as well be classified into two categories:

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Answer:

What are Types of Unconformity?

Disconformity. A disconformity is an unconformity between parallel layers of sedimentary rocks which is a period of erosion or non-deposition.

Nonconformity. A nonconformity exists between sedimentary rocks and metamorphic or igneous rocks when the sedimentary rock lies above and was deposited on the pre-existing and eroded metamorphic or igneous rock.

Angular unconformity. An angular unconformity is an unconformity in which horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers, resulting in angular discordance with the horizontal …

Explanation:

Answer:

For geologists, one of the most famous angular unconformity is the Grand Unconformity in the Grand Canyon of Arizona. Here tilted sedimentary rocks of Precambrian age are overlain by younger sedimentary rocks of Phanerozoic age.

Explanation:

Answer:

We can separate mixtures at home by following ways;

Mixtures can be separated using a variety of techniques.

Chromatography involves solvent separation on a solid medium.

Distillation takes advantage of differences in boiling points.

Evaporation removes a liquid from a solution to leave a solid material.

Filtration separates solids of different sizes.

Answer:

0.0457M is molarity of nitrate anion in the solution.

Explanation:

Molarity is defined as the ratio between moles of solute (In this case, nitrate ion) and liters of solution (The total volume of the solution is 300.0mL = 0.300L).

Thus, we need to convert mass of Lead(II) nitrate to moles using its molar mass (Molar mass Pb(NO₃)₂: 331.2 g/mol). Moles of Pb(NO₃)₂ = 1/2 Moles of NO₃⁻:

Moles Pb(NO₃)₂ and moles of NO₃⁻:

2.27g * (1mol / 331.2g) = 0.006854 moles Pb(NO₃)₂ * (2moles NO₃⁻ / 1mol Pb(NO₃)₂) = 0.0137moles NO₃⁻

Molarity is:

0.0137 moles NO₃⁻ / 0.300L =

Answer: Balance, multiply, find ratio

Explanation:

Balance the equation to be able to multiply correctly and accurately, multiply, and this will give you the molar ratio

Answer:

Ether

SN1 mechanism

Explanation:

The nucleophile in this reaction is CH3OH. It is a poor nucleopile. We already know that a poor nucleophile reacting with a tertiary alkyl halide often leads to the substitution product as the major product.

Also, the iodide ion is a good leaving group. This makes the SN1 substitution more likely yielding the ether as the major product as shown in the image attached.

Answer: 7 valence electrons

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies.

Valence electrons are the number of electrons constituting the outermost shell of an atom.

Thus the electronic configuration could be :

[tex]1s^22s^22p^5[/tex]

Thus the outermost orbit is 2 which has (2+5)= 7 electrons. Thus there are 7 valence electrons.

Answer:

B hope this helps

Explanation:

The density of a substance describes how closely its molecules are packed. Despite the fact that ice is a solid form, an ice cube contains many pores in and the molecules are more spread in the state than that in liquid state of water.

Density of a substance is the measure of its mass per unit volume. It describes how closely packed its molecules within a given volume. If the molecules have enough space to spread they will be less dense.

The objects which are less dense than water will float in it. Whereas which are having more density will sink on it. Ice floats on water because, ice is less dense than water.

An ice cube has a pore structure and one ice cube contains fewer water molecules and which are spread through the porous structure. Therefore, water in liquid state is more dense than ice.

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Answer:

the correct answer is W on edge 2020

Explanation:

I took the test

The mouth part of an insect which is  best adapted for chewing leaves is the one labelled as'W'as it shows presence of sharp teeth which help i tearing.

Insects are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms.

The total number of extant species is estimated at between six and ten million; potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within.

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Answer:

[tex]m_F=234gF[/tex]

Explanation:

Hello!

In this case, given that one molecule of CF2Cl2 contains two moles of atoms of fluorine, we can set up the following dimensional analysis to compute the emitted fluorine each year by the considered car:

[tex]m_F = \frac{62gCF_2Cl_2}{1month}*\frac{12months}{1year}* \frac{1molCF_2Cl_2}{120.91gCF_2Cl_2}*\frac{2molF}{1molCF_2Cl_2} *\frac{19.0gF}{1molF} \\\\m_F=234gF[/tex]

Best regards!

Answer:

Thorium-234 option a .......

238 4 234

U --> α + Th

92 2 90

The answer is A Thorium.

Answer: Sugar and fat

Explanation:

Answer:

nitrogen

Explanation:

The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere. Why do I care?

nitrogen is the most abundant gas in the atmosphere

Answer:

A. Creep

Explanation:

Creep is usually defined as a mass movement process where the rock and other particles are forced to move slowly downward along a slope that is mostly covered with softer sediments and broken rock fragments. It results in the tilting of trees, poles, and gravestones.

The type of mass movement described above is a creep.

Creep movement refers to the slow downslope of different objects and/or materials that occurs on a particular slope surface.

In nature, creep movement is common to describe the slow tilt movement of different materials such as trees and poles on a hillside.

Creep movement occurs on a geological scale, ie, this movement may take hundreds of years.

In conclusion, the type of mass movement described above is a creep.

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Answer:

7 neutrons

Explanation:

Answer:                 Absolute zero is denoted as 0 K on the Kelvin scale, −273.15 °C on the Celsius scale, and −459.67 °F on the Fahrenheit scale.                    

Explanation: the lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to –273.15°C or –459.67°F.

Answer:

Absolute Zero is the absence of heat energy, aka the lowest possible temperature. In Kelvin absolute zero is just 0 because the Kelvin scale starts at 0. In celsius it is -273.15 degrees

Answer:

BTS

Explanation:

Answer) It does not conduct electricity in any form. Consider the location of barium, chlorine, iodine, and strontium on the periodic table.  It conducts electricity when it is dissolved in water.

I hope it is helpful

Answer: Alkali metals, halogens, noble gases

Explanation:

Ionic compounds are made of ions- charges. In LiF and NaCl, the first element has a +1 and the second element has a charge of -1. Elements that are +1 are alkali metals and elements that are -1 are halogens. Noble gases have full octets in their outermost valence shell, and since they're full it's so stable so it doesn't react with anything.

Answer:

Answer is A.

Explanation:

I hope it's helpful!

Answer: The volume of tetrahydrofuran the student should pour out is 33.7 ml

Explanation:

Density is defined as the mass contained per unit volume.

[tex]Density=\frac{mass}{Volume}[/tex]

Given : Mass of tetrahydrofuran = 30.0 grams

Density of tetrahydrofuran = [tex]0.889gcm^{-3}[/tex]

Putting in the values we get:

[tex]0.889gcm^{-3}=\frac{30.0g}{Volume}[/tex]

[tex]Volume=\frac{30.0g}{0.889gcm^{-3}}=33.7cm^3=33.7ml[/tex]      [tex](1cm^3=1ml)[/tex]

Thus volume of tetrahydrofuran the student should pour out is 33.7 ml