b. Chlorophenol has three isomers. Draw the skeletal formula for these three isomers and the structural
formula for one of them.
(4 marks)

Answer:

There are 6.022x10^23 molecules

Answer:

a physical change only changes the look of something whereas a chemical change occurs when one thing has a reaction and it forms a new substance.

Answer:

I'm pretty sure your answer will be 9

Answer:

9

Explanation:

Mass number = proton + neutron

                       = 4 + 5

                       = 9

Answer:

heterogeneous mixture

Explanation:

(a) A mixture with the same composition and properties throughout is called a homogeneous mixture. (b) A mixture, the different parts of which vary in composition and properties, is called a heterogeneous mixture.

Answer:

Sulfuric acid or sulphuric acid, also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula H₂SO₄. It is a colorless, odorless and viscous liquid that is miscible with water.

Explanation:

Explanation:

Sulfuric acid is a colourless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. The major use of sulfuric acid is in the production of fertilizers . Sulfuric acid, sulfuric also spelled sulfuric (H2so4) , also called oil of vitrod. Sulfuric acid is a very important commodity chemical , and a nation's sulfuric acid production is a good indicator of it's industrial strength.

Explanation:

By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion. When an ion is formed, the number of protons does not change.

Answer:

Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions.

Explanation:

by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the formerly bonded atoms. Examples of these processes include the reaction of a sodium atom with a chlorine atom to form a sodium cation and a chloride anion; the addition of a hydrogen cation to an ammonia molecule to form an ammonium cation; and the dissociation of a water molecule to form a hydrogen cation and a hydroxide anion.

Answer:

It's A. 120 cubic meters

If Step 1 is missing, there will be less carbon available for both plant and animal growth.

The steps written down by Chris to describe how carbon is circulates between the ground and living organisms form part of the carbon cycle.

In the first step which is photosynthesis, plants such as trees absorb carbon dioxide from the air and use it to make their own food.

Also the food made by plants during photosynthesis serve as a source of carbon for both the plants as well as animals and other organisms which depends on plants as their carbon source for growth.

Therefore, if Step 1 is missing, there will be less carbon available for both plant and animal growth.

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Answer: B

Explanation:

Answer:

A

Explanation:

Because it have more glucose

At 100.25 degree C temperature does water boil if 75.0 g of glucose (180.1 g/mol) is added to 400 g of water. Hence option A is correct.

Temperature is defined as the measuring a substance's degree of heat or cold. The direction of heat transfer when two bodies with different temperatures are kept in touch depends on the temperature. An instrument that measures temperature is a thermometer.

Glucose is defined as one of the carbohydrates classified as simple sugars. The brain is the most energy-hungry organ in the body and uses half of the body's sugar energy due to its abundance of nerve cells, or neurons. Thinking, memory, and learning are all tightly correlated with blood glucose levels and how effectively the brain uses this fuel.

Thus, at 100.25 degree C temperature does water boil if 75.0 g of glucose (180.1 g/mol) is added to 400 g of water. Hence option A is correct.

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Explanation:

One is the average weight of an element and the other is the total number of nucleons in the atom's nucleus. Atomic mass is also known as atomic weight. Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes please mark as a brainliest

Answer:

a) Na2O

b) Ag2O

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Answer:

A pure substance composed of the same type of atom throughout. Compound: A substance made of two or more elements that are chemically combined in fixed amounts.

[tex]\\ \sf\longmapsto 4x+6=-10[/tex]

[tex]\\ \sf\longmapsto 4x=-10-6[/tex]

[tex]\\ \sf\longmapsto 4x=-16[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{-16}{4}[/tex]

[tex]\\ \sf\longmapsto x=-4[/tex]

4x + 6 = - 10

4x = -10-6

4x = -16

x = -16/4

× = -4

Answer:

B. Mass

Explanation:

Matter is all the “stuff” that exists in the universe. It has both mass and volume. · Mass measures the amount of matter in a substance or an object.

hope i helped

Answer:34.28 Degree celcius

Explanation:The heat given is equal to the change in temperature multiplied by the mass and the specific heat capacity

This gives the equation:Q=mc∆T

Where Q=184,m=7, specific heat capacity=4.184,∆T=X-28,

But ∆T=Final temperature (T'')-Initial temperature (T')

Therefore the equation becomes

184=7×4.184(X-28)

Solving the remaining linear equation gives you X as 34.28°C

Answer:  Technically, this cannot be answered, since none of the H atoms have a mass number assigned.  With the assumption noted delow, I calculate 1.012 as the average atomic mass.

Explanation:

My answer is based on assumed masses for the three H isotopes:

1H :   1 AMU

2H:   2 AMU   Deuterium

3H:    3AMU   Tritium

     AMU   Rel Abund.    Wt. Avg

1H 1     99.00%      0.99

2H 2       0.80%      0.016

3H 3       0.20%       0.006

              Sum   1.012

The chemical formula for sulfuric acid is H2SO4.

Detailed explanation:

This means that there are 2 atoms of hydrogen, 1 atom of sulfur, and 4 atoms of oxygen in a single molecule. Hope this helps!

The answer is H2SO4.

Explanation:

Element X forms a chloride with the formula XCl 2 , which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as. (a) Na (b) Mg (c) Al (d) Si. the answer is Mg .

The mass of the chunk of copper is 179.2g

WHAT IS DENSITY:

The density of Copper element is 8.96g/mL

Since density = mass (g) ÷ volume (mL)

8.96 = mass ÷ 20mL

mass = 20 × 8.96

mass = 179.2g

Therefore, the mass of the chunk of copper is 179.2g

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For exothermic processes, spontaneity will only occur if the entropy positive with all temperature or if the entropy is negative with only low temperature.

Since the given equation decomposed from 2 moles of gas into 3 moles of gas, we know that entropy is positive. Thus the reaction will be spontaneous at all temperature.

D is the answer

Answer:

I think in the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom.

Hope this help you!:)

burning is irreversible change so its chemical change

Answer:

No more than 0.1 mL of hydrochloricton acid

Answer:For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere). River action erodes banks (lithosphere) and uproots plants (biosphere) on the riverbanks.

Explanation:b

We have that examples of a connection between the hydrosphere and the

lithosphere are

Option A and B

The hydrosphere bears rain that falls in the atmosphere and creates water bodies on earth  by combining with the lithosphere

Therefore

Are  examples of a connection between the hydrosphere and the

lithosphere.

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A space filling model is a representation in which atoms of a compound appear as spheres of equal diameter. Crystals are best represented using space filling model.

Crystals are composed of atoms or molecules of a substance that are arranged in a regular and repeating pattern.

While ball and stick models offer an effective representation for discrete molecules, a space filling model is more apt for a crystal since the components are repeating at regular intervals.

Hence the correct answer is option B:  space-fill. The space filling model of sodium chloride crystal is shown in the image attached.

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Answer:

Hydrogen (H) 1s1

Helium (He) 1s2

Lithium (Li) 1s2 2s1

Beryllium (Be) 1s2 2s2

Boron (B) 1s2 2s2 2p1

Carbon (C) 1s2 2s2 2p2

Nitrogen (N) 1s2 2s2 2p3

Oxygen (O) 1s2 2s2 2p4

Fluorine (F) 1s2 2s2 2p5

Neon (Ne) 1s2 2s2 2p6

Sodium (Na) 1s2 2s2 2p6 3s1

Magnesium (Mg) 1s2 2s2 2p6 3s2

Aluminum (Al) 1s2 2s2 2p6 3s2 3p1

Silicon (Si) 1s2 2s2 2p6 3s2 3p2

Phosphorus (P) 1s2 2s2 2p6 3s2 3p3

Sulfur (S) 1s2 2s2 2p6 3s2 3p4

Chlorine (Cl) 1s2 2s2 2p6 3s2 3p5

Argon (Ar) 1s2 2s2 2p6 3s2 3p6

Potassium (K) 1s2 2s2 2p6 3s2 3p6 4s1

Calcium (Ca) 1s2 2s2 2p6 3s2 3p6 4s2

Explanation: