what is matter made of?

neutralization reaction = acid+base = salt + water

molecular equation = balanced equation

2HI(aq) + Ba(OH)₂(aq) ⇒ BaI₂(aq) + 2H₂O(l)

Answer: 50%

Explanation:

To find the percent composition of oxygen in SO₂, we need to find out the molar masses of both elements and add them.

First, figure out how many atoms are in each element of this compound. Then figure out the molar mass by multiplying it by the molar mass you'd see on the periodic table.

[tex]1atomS*32.06g=32.06g/molS\\2atomO*15.999g=31.998g/molO_{2}[/tex]

Now that we have that information, we must add up the numbers to get the molar mass of SO₂.

[tex]32.06g/molS+31.998g/molO_{2} =64.058g/molSO_{2}[/tex]

Now we have the molar mass of SO₂. To find the percent composition of oxygen in SO₂, we must divide the molar mass of O₂ by that of SO₂, then multiply that by 100.

[tex]\frac{31.998g/molO_{2} }{64.058g/molSO_{2} } *100=49.95; 50[/tex]

Given this, the percent composition of oxygen in SO₂ is 50%.

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Answer:

0.5 mol/dm3

Explanation:

e.g. g/dm3, g/cm3 and mol/dm3

= g dm-3, g cm-3 and mol dm-3

Answer:

Explanation:

Sounds like oxygen acts as a 'catalyst'

Colloidal solution has large size particles hence it is able to scatter light.

A colloidal solution is a solution that is composed of particles that are larger in size than the particles that compose a true solution.

For question 6;

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A)

For question 7;

Assertion (A) is true but reason (R) is false.

For question 8;

Assertion (A) is false but reason (R) is true.

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Butane is a gaseous molecule which is part of the organic compounds called  hydrocarbon,

Butane is a gaseous molecule which is generally called a hydrocarbon.

Hydrocarbons are composed of only carbon and hydrogen. They are of organic origin.

Butane is a low molecular weight hydrocarbon which is used as a fuel.

In conclusion, butane is a gaseous hydrocarbon,

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Answer:

This is because the ionic forces in those molecules are very high, which creates high lattice energy

Explanation:

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The number of moles of H₂ that must be generated to fill it is 0.41 mole.

Apply ideal gas law;

PV = nRT

n = PV/RT

where;

n = (10 x 100)/(8.314 x 293)

n = 0.41 mole

Thus, the number of moles of H₂ that must be generated to fill it is 0.41 mole.

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1. The pH of the solution is 1.36

2. The pH of the solution is 10.47

3. the concentration of [H₃O⁺] in the solution is 6.3×10⁻¹⁴ M

This is simply a measure of the acidity / alkalinity of a solution.

The pH measures the hydrogen ion (hydronium ion) concentration while the poH measures the hydroxide ion concentration. It is expressed mathematically as

pH = –Log H₃O⁺

pH = –Log H₃O⁺

pH = –Log 4.32×10⁻²

pH = 1.36

pH = –Log H₃O⁺

pH = –Log 3.4×10⁻¹¹

pH = 10.47

pH = –Log H₃O⁺

13.2 = –Log H₃O⁺

Multiply through by -1

-13.2 = Log H₃O⁺

Take the anti-log of -13.2

H₃O⁺ = anti-log (-13.2)

H₃O⁺ = 6.3×10⁻¹⁴ M

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[tex]6h2o + 6co2 = 6o2 + c6h12o6[/tex]

[tex]n = n \\ \frac{ mass}{molar \: mass} = \frac{mass}{molar \: mass} [/tex]

[tex] \frac{55}{44} = \frac{m}{32} \\ m = \frac{55 \times 32}{44} = 40 \: grams[/tex]

Photosynthesis reactions are the process that occurs in the plants to yield oxygen from food. In the process, 55 gm of carbon dioxide produces 40 gm of oxygen. Thus, option B is correct.

Photosynthesis is a metabolic reaction that takes place in the plant cell where the sun energy converts the water and carbon dioxide into sugar (glucose) and oxygen.

The photosynthetic reaction is given as,

6H₂O + 6 CO₂ → C₃H₁₂O₆ + 6O₂

In the above reaction, there are 6 moles of carbon dioxide needed to produce 6 moles of oxygen. Hence, moles of carbon dioxide consumed = moles of oxygen produced.

Mass from moles is calculated as,

Moles = mass ÷ molar mass

Equating moles of both CO₂ and O₂,

mass ÷ molar mass = mass ÷ molar mass

55 ÷ 44 = m ÷ 32

m = 55 × 32 ÷ 44

= 40 gm

Therefore, 40 gm of oxygen is produced from 6 moles of carbon dioxide.

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Answer:

9.9363 x 10^23  atoms

Explanation:

1.65   x   Avagadro's Number

1.65 * 6.022 x 10^23 =

Answer:

B) They are made up of particles that travel in a curved path when in motion.

Explanation:

We know that gas, being a state of matter, is made up of particles. John Dalton's solid-sphere model was proven to be incorrect by Ernest Rutherford's gold foil experiment.

These particles do NOT always move very slowly. There are multiple different factors that affect the speed of the particles such as temperature or concentration.

Answer:

0.3011 X10²³

Explanation:

hope this helps u

When electrons in an atom transition from a lower energy state to a higher energy state it has to absorb some energy in order to transition to the higher energy state.

When properly stimulated, the electrons in these materials move from lower energy levels to higher energy levels and occupy different orbits. Then, at some point, these high-energy electrons emit "extra" energy in the form of photons and return to their original energy levels.

Electrons jump to higher energy levels when excited by external energy gains such as B. Large heating, the presence of an electric field, or collision with another electron.

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In ground-state electron configuration, the principal quantum number (n), the orbital (s, p, d, or f), and the total number of electrons are used to represent electron configurations.

Case 1 Ground-state electron configuration of elements.

A) Chlorine: 1s²2s²2[tex]p^{6}[/tex]3s²3[tex]p^{5}[/tex]

B) Cesium: 1s² 2s²2p⁶ 3s²3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s¹

C) Vanadium: 1s²2s²2p⁶3s²3p⁶3d³4s²

D) Rhenium: 1s² 2s² 2p⁶ 3s² 3p⁶3d¹⁰ 4s²4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d⁵ 6s²

Case 2 : Number of valence electron in atoms

A) Sn -Tin - Four valence electrons

B) La - Lanthanum - Three valence electrons

C) Mn - Manganese - Seven valence electrons

D) Zn- Zinc - Two valence electrons

Case 3 Ground-state electronic configuration of ions

A) Co⁺³ : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹3d⁵

B) Mo⁺² : 1s² 2s² 2p⁶3s²3p⁶ 4s² 3d¹⁰ 4p⁶5s² 4d²

C) Ra⁺² : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁶

D) I⁻ : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶

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Answer:

Photosynthesis occurs in two stages. During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process.

Explanation:

Answer:

Chloroplast absorbs the energy emitted by the Sun.

_____________________________________________________

Context:

Photosynthesis:

The complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.

Chloroplast:

A plastid containing chlorophyll.

Chlorophyll:

The green coloring matter of leaves and plants, essentially to the production of carbohydrates by photosynthesis, and occurring in a blush-black form, C55J72MgN4O5 (chlorophyll a), and a dark-green form, C55H70MgtN4O6 (chlorophyll b).

Sun:

The star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance form earth is about 93 million miles (150 million km), its diameter about 864,000 miles (1.4 million km), and it's mass about 330,000 times that of earth; its period of surface rotation is about 26 days at its equator but longer at higher latitudes.

Explanation:

There are two main phases in photosynthesis:

depending on light stage

Clause Cycle (AKA the dark stage or the light-independent stage)

In the light-dependent stage, ATP and NADPH are produced using photons, or light energy. Oxygen molecules start to form during this stage as a byproduct.

Utilizing the materials produced during the light-dependent stage, the Calvin cycle fixes CO2 molecules to produce carbohydrates (sugars). This stage can repeat itself indefinitely since RuBP, the initial chemical required for the stage to go further, also serves as its byproduct.

Answer:

boring it

Explanation:

because boring is life style

Amount of heat released:

Heat is released when 25.0 gm of liquid copper at its freezing point of 1,085°C changes to solid is -5125 J

Given:

Mass of liquid copper, m= 25 gm

Latent heat of fusion of copper, L = 205.0 J/g

The amount of heat needed to change one gram of a substance from solid to liquid is known as the latent heat of fusion.

However, in this instance, it is necessary to determine the quantity of heat emitted when liquid copper solidifies.

So, L = -205.0 J/g

Calculation:

We may use the unitary approach to calculate the heat released when 25.0 grams of liquid copper solidify at 1,085°C, which is its freezing point.

So,

Q = L x m

Q = -205 J/g x 25 g

Q = -5125 J

So, the correct answer is b) -5,130 J, which is much nearest to -5125 J as we have calculated above.

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Answer:

-5,130 J

Explanation:

I got 100% on the quiz edge 2022

The lysis reaction with the formation of two different gases, and the synthesis reaction with the reaction of hydrogen and oxygen support that water is a compound and not an element.

The electrolysis is the analytical process for the separation or the deposition of the element in the presence of the electric field.

The passing of electric current through water results in the release of two types of gases. Thus, it can be said that water lysis or breakdown forms the release of two elements hydrogen and oxygen supporting the fact that water is a compound and not an element.

The production of water is found to be formed with the reaction of hydrogen with oxygen. Thus it supports that water is a compound and, not an element.

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The selectivity filter of an ion channel prevent the passage of ions that are smaller or bigger through forming the most constricted part of the conduction pathway.

This is referred to a particle which is charged such as being positive, negative etc.

The selectivity filter being part of the constricted parts will ensure that the appropriate ions are bonded and moved into the cell.

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How does the temperature change?

The temperature rise brought on by the interaction of magnesium with hydrochloric acid led Noor and hanif to wonder.

Determining the rate of temperature:

In order to gauge the temperature, Noor and hanif each added 10 cm of hydrochloric acid to a test tube. The same pieces of magnesium ribbon were then inserted. The temperature was again measured when the reaction ended.

The rate of temperature rise during a reaction. Heat energy is released when metals react with acids or water. A metal reacts exothermically with either water or acid.

Acid and metal reactions:

The test tube heated up when you added magnesium to dilute hydrochloric acid. Magnesium and hydrochloric acid interaction in an exothermic process.

magnesium + hydrochloric acid → magnesium chloride + hydrogen

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Answer:

We convert two lone pairs of electrons from each oxygen atom to a covalent bond, as seen in the SiO2 Lewis dot structure. As a result, the valence shells of both silicon and oxygen have eight electrons.

Answer: C. 20

Explanation: One equation for the equilibrium constant is [tex]\frac{[Products]}{[Reactants]}[/tex]. The products are typically on the left side and the reactants on the right.

Given this and the values of each, we can easily plug this in. However, we must multiply the products instead of adding them.

[tex]\frac{0.69M*0.98M}{0.034M} =19.888, or 20M[/tex]

19.888 can be easily rounded to 20, meaning that C is the best answer.

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The chemical formula of aluminum chloride is AlCl₃ and the  chemical formula of aluminum oxide is Al₂O₃.

The chemical formula of aluminum chloride is written as;

Al³⁺  + Cl⁻   → AlCl₃

The chemical formula of aluminum oxide is written as;

Al³⁺  + O²⁻   → Al₂O₃

Thus, the chemical formula of aluminum chloride is AlCl₃ and the  chemical formula of aluminum oxide is Al₂O₃.

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Answer:

gg mate

Explanation:

The reactant in this reaction is 2-fluoro-5-propyl - heptane while the product is  2-hydroxy-5-propyl - heptane.

We define a substitution reaction as one in which a given moiety is replaced by another. This is an example of a substitution reaction.

The name of the reactant in this reaction is 2-fluoro-5-propyl - heptane while the product is  2-hydroxy-5-propyl - heptane.

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A solution containing 1 mol of a strong electrolyte will have a greater effect on the colligative properties of the solution than 1 mol of a nonelectrolyte. A strong electrolyte will dissociate or ionize in an aqueous solution, and therefore the total number of dissolved solute particles is greater for 1 mol of a strong electrolyte than for 1 mol of a nonelectrolyte solute.

An electrolyte is a material that separates into charged ions when it is in contact with water. Cations are positively charged ions. Anions are ions that are negatively charged. A substance that may conduct an electric current when melted or dissolved in water is known as an electrolyte.

A substance is referred to as a strong electrolyte if the physical or chemical process that produces the ions is virtually 100% effective (all of the dissolved molecules give ions). Weak electrolytes are those in which only a very small portion of the dissolved substance goes through the ion-producing process.

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During photosynthesis, 5 moles of water are needed to produce 150 grams of glucose. The correct option is D.

It is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

6 CO₂ + 6 H₂O ⇒ C₆H₁₂O₆ + 6 O₂

The molar mass of C₆H₁₂O₆ is 180.16 g/mol.

150 g × 1 mol/180.16 g = 0.833 mol

The molar ratio of H₂O to C₆H₁₂O₆ is 6:1.

0.833 mol C₆H₁₂O₆ × 6 mol H₂O/1 mol C₆H₁₂O₆ = 5.00 mol H₂O

During photosynthesis, 5 moles of water are needed to produce 150 grams of glucose. The correct option is D.

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Rather than being oxidized for energy, sugars are connected by glycosidic linkages to make a capsule. This is catabolism process.

It is a type of linkage in which covalent bond that joins a carbohydrate molecules to another group is called glycosidic bond or glycosidic linkage.

Example: Hemiacetal and hemiketal.

Catabolism is the part of metabolic process which uses energy to break down into smaller units.

Thus from the above conclusion we can say that Rather than being oxidized for energy, sugars are connected by glycosidic linkages to make a capsule. This is catabolism process.

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Answer:

m =1,182.8g

Explanation:

there you go

Answer:

A solution of NaOH has concentration 1.2M. Calculate the mass of NaOH in g/dm3 in this solution. = 1.2x 40x 1 = 48 g 3.

The mass of NaOH in the solution having concentration of 1.2 M is 48.00 grams per decimeter cubed (g/dm³).

Concentration refers to the amount of a solute dissolved in a given amount of solvent or solution. It is a measure of how much solute is present in a specific volume or mass of the solution.

Concentration can be expressed in various units, such as molarity (moles of solute per liter of solution), mass percent (mass of solute per 100 grams of solution), parts per million (ppm), and others.

Given:

Concentration of NaOH solution = 1.2 M

The molar mass of NaOH (sodium hydroxide) is:

Na: 22.99 g/mol

O: 16.00 g/mol

H: 1.01 g/mol

Total molar mass of NaOH = 22.99 + 16.00 + 1.01

= 40.00 g/mol

1 mole of NaOH = 40.00 g

1.2 moles of NaOH = 1.2 moles × 40.00 g/mole

= 48.00 g/L

1 L = 1 dm³

So, 48.00 g/L = 48.00 g/dm³

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