homogeneous or heterogeneous ang ibig sabihin ng dalwang ito ​

Phenyl propyl is a chemical term that refers to a molecule containing a phenyl group (a six-membered aromatic ring made up of carbon and hydrogen atoms) attached to a propyl group (a three-carbon chain).

The phenyl group is a six-membered aromatic ring consisting of carbon and hydrogen atoms, while the propyl group is a three-carbon chain. The combination of these two groups can result in the formation of a wide range of chemical compounds with diverse properties and applications.

For example, phenyl propyl ether is a common compound in which a phenyl group is attached to a propyl group via an oxygen atom, while phenyl propylamine is a compound containing a phenyl and propyl group attached to a nitrogen atom, commonly used in the production of pharmaceuticals and other chemicals.

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Answer:

B

Explanation:

The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.

Atomic Model:

Atoms are the smallest unit of elements, which form bonds with others. In an atom, electrons revolve around the nucleus.

The nucleus is composed of positively charged protons and neutrons. The nucleus occupies a very small part of the atom.

Electrons are negatively charged particles, they are found around the nucleus and occupy most of the part of the atom.

Therefore, The neucles is surrounded by electrons. Electrons occupy most of the volume of the atom.

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Answer:

B :)

Explanation:

Trachea is were oxygen is entered :D (5 stars?)

Determine how many mL of solution A (acetic acid-indicator solution) must be added to solution B (sodium acetate-indicator solution) to obtain a buffer solution that is equimolar in acetate and acetic acid. Solution A: 10.0 mL 3.0e-4M bromescol green

hoped I helped

Answer:

Explanation:

Vinegar contains acetic acid, and baking soda is sodium hydrogen carbonate. When they are combined, a reaction occurs and bubbles form. Which gas is in the bubbles, and why do the bubbles form? Oxygen gas forms because an acid reacts with a metal.

( if you want to copy and paste make sure to rephrase it)

Answer:

Explanation:

-Octet forms when the valence electrons are gained, lost or shared.

-In order to become stable, which has 8 valence electrons (octet), nonmetal groups such as group 17, needs to gain 1 more electron to become 8/ octet.

When gaining that 1 electron, group 17 elements become negative ion or anions

-For metal groups such as group 1, they need to lose that 1 electron to become stable. When they lose that 1 electron, they become positive ion which is cation.

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Alcohols (O-H), acids (COOH), or amines (NH2)-polar groups are need to be present in the R group for hydrogen.

This type of functional group contains only hydrogen and carbon as constituent elements. They are commonly represented with ‘R’. They are also called hydrocarbyl groups. The bonding between the carbon atoms can be single, double, or triple.

When we define a functional group, we imply a group of atoms of the same or different elements forming a chemically-active section of a compound and creating a class of new compounds. In organic chemistry, there are many such functional groups. For example, an alcohol group (-OH) defines a particular set of characteristics of the compounds that have it as a constituent. These characteristics will vary from one functional group to the other.

Therefore,

Three function groups  Alcohols (O-H), acids (COOH), or amines (NH2) needs to be present in the R group for hydrogen.

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The type of reasoning that makes a statement or prediction based on a general concept is called Inductive reasoning.

Reasoning is defined as the act of thinking in a manner that is sensible or logical.

There are different types of reasoning which includes:

Inductive reasoning is defined as the type of reasoning that involves making a general conclusion from a set of specific observation.

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Answer:

They form K₂O (Potassium oxide) and HCl (Hydrochloric acid). This is because K and H are positively charged and O and Cl are negatively charged and cations only bond with anions.

Answer:

how do u want me to do this

Explanation:

The dry density is approximately 1.76 g/cm^3. The porosity is approximately 0.162 or 16.2%, the void ratio is approximately 0.193, The degree of saturation (S) is 0.844.


(i) To determine the dry density, we need to consider the mass of solid particles only. The dry density (yd) can be calculated using the following formula:

yd = yt / (1 + (w/100))

Given:

Wet density (yt) = 2.1 g/cm^3

Water content (w) = 19%

Substituting the values into the formula:

yd = 2.1 / (1 + (19/100)) = 2.1 / (1 + 0.19) = 2.1 / 1.19 ≈ 1.76 g/cm^3

Therefore, the dry density is approximately 1.76 g/cm^3.

(ii) To determine the porosity, we can use the relationship between porosity (n) and the dry density (yd) and wet density (yt):

n = (yt - yd) / yt

Substituting the values:

n = (2.1 - 1.76) / 2.1 = 0.34 / 2.1 ≈ 0.162

Therefore, the porosity is approximately 0.162 or 16.2%.

(iii) The void ratio (e) can be calculated using the formula:

e = n / (1 - n)

Substituting the value of porosity (n):

e = 0.162 / (1 - 0.162) ≈ 0.193

Therefore, the void ratio is approximately 0.193.

(iv) The degree of saturation (S) can be calculated using the formula:

S = (wt - w) / (Gw)

Given:

Water content (w) = 19%

Water content of fully saturated soil (wt) = 100%

Specific gravity of water (Gw) = 1

Substituting the values:

S = (1 - 0.19) / (1 * 0.19) ≈ 0.844

Therefore, the degree of saturation is approximately 0.844 or 84.4%.


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The range of -10°F to 0°F is the ideal temperature range for ice-making because it promotes faster freezing time and produces high-quality ice.

The process of ice-making usually occurs in the temperature range of -10°F to 0°F. Ice making is the process of making ice from water. The process is usually used in refrigerators, air conditioning units, and in manufacturing industries. During this process, water is changed from its liquid state to a solid state through a cooling process. The ice-making temperature range is important because it determines how long it will take for water to freeze into ice at a given temperature range. The colder the temperature, the quicker the ice-making process. Therefore, the range of -10°F to 0°F is the ideal temperature range for ice-making because it promotes faster freezing time and produces high-quality ice.

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Answer:

Transpiration

Then condensation

Then precipitation

and etc.

Answer: The water cycle?

Explanation: I hope this answer your question- Lily ^-^

Answer:

1. A. 9 eggs

2. B. 5:3

3. C. Exactly 44 g

4. C. Mass and atoms only

5. D. 6.81 g of PH₃

6. C. 88.4%

7. B. O₂

8. D. 30.8 g CO₂

9. B.

10. B.

11. C. 99 g

12. D. mole ratio

13. C. Theoretical

14. A. 6.0 mol H₂O

15. D. 39.7 g CH₃OH

16. A. 650 g HgO

17. D. 8.8 mol H₂

18. B. 82.6%

Explanation:

1. The number of eggs it takes to make 1 cake = 3 eggs

The number of eggs it takes to make 3 × 1 = 3 cake = 3 × 3 = 9 eggs

Therefore, the correct option is;

A. 9 eggs

2. The given reaction is presented as follows;

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

In the above reaction, we have;

Moles of , O₂, reacted = 5 moles

Moles of , CO₂, produced = 3 moles

The ratio of the of O₂ reacted to moles of CO₂ produced = 5 moles:3 moles

∴ The ratio of the of O₂ reacted to moles of CO₂ produced = 5:3

The correct option is;

B. 5:3

3. The reaction is presented as follows;

O₂ (g) + C(s) → CO₂ (g)

From the reaction, 1 mole (12 g) of carbon produces 1 mole of CO₂

The molar mass of CO₂ = The mass of 1 mole of CO₂ = 44.01 g/mol

Given that the reaction is completed, the mass of CO₂ produced = The mass of 1 mole of CO₂ ≈ 44 g

The correct option is;

C. Exactly 44 g

4. The given reaction is presented as follows;

N₂ + 3 F₂ → 2NF₃

The initial number of atom = 2 + 6 = 8

The final number of atom = 2 × 4   = 8

∴ The initial number of atom = The final number of atom

Therefore, the number of atoms is conserved;

The mass of the reactants ≈ 28 g/mol + 3 × 37.996806 g/mol ≈ 141.993612 g/mol ≈ 142 g/mol

The mass of the product ≈ 2 × 71 g.mol = 142 g/mol

∴ The mass is conserved

Moles of reactants = 1 + 3 = 4

Moles of products = 2

∴ The number of moles is not conserved

The correct option is

C. Mass and atoms only

5. The molar mass of P₄ = 123.895048 g/mol

One mole of P₄ (123.895048 g) produces four moles (4 × 34.00) of PH₃

6.20 g of P₄. will produce (4 × 34.00)/(123.895048) × 6.20 g ≈ 6.80576 g ≈ 6.81 g

The correct option is D. 6.81 g of PH₃

6. The percentage yield = ((The actual yield)/(The ideal yield)) × 100

The actual yield of silver = 38.1 g

The ideal yield of silver = 43.1 g

∴ The percentage yield = ((38.1 g)/(43.1 g)) × 100 = 88.3990719258% ≈ 88.4%

The percentage yield = 88.4%

The correct option is C. 88.4%

7. The given chemical equation is presented as follows;

CS₂ (g) + 3 O₂ (g) → CO₂ (g) + 2 SO₂ (g)

The number of moles in 192 g of O₂ = 192 g/(32 g/mol) = 6 moles

Given that 3 moles of O₂ reacts with 1 mole of CS₂ to produce 1 mole of CO₂ and 2 moles SO₂,  therefore 2 × 3 = 6 moles of O₂ will reacts with 2 × 1 = 2 moles of CS₂ to produce 2 moles of CO₂ and 4 moles SO₂

∴ The limiting reactant is;

B. O₂

8. The given chemical equation is presented as follows;

2 C₈H₁₈ (g) + 25 O₂ (g) → 16 CO₂ (g) + 18 H₂O (l)

The number of moles in 10 g of C₈H₁₈, n₁ = (10 g)/(114.26 g/mol)

The number of moles of CO₂ produced, n₂ = (10 g)/(114.26 g/mol) × 16/2 ≈ 0.7 moles

The mass of CO₂ produced, m ≈ 44.01 × n₂ ≈ 44.01 g/mol × 0.7 moles ≈ 30.807 grams ≈ 30.8 grams

The theoretical yield of CO₂ from completely burning 10.0 g of C₈H₁₈ ≈ 30.8 grams of CO₂

The correct option is D. 30.8 g CO₂

9. The correct option is B. The limiting reactants determine the maximum amount of product that can be formed

10. Option B, which has 3 atoms of each element combining to form a product with 1 atom of one element and 2 atoms of the other element

The correct option is B.

11. By the conservation of mass, we have;

The mass of the reactants = The mass of the products

Let 'x' represent the mass of zinc in the products of the reaction

Therefore, we have;

61 g of calcium + 207 g of zinc chloride = 169 g of calcium chloride + x g of Zinc

∴  x g = 61 g + 207 g - 169 g = 99 g

The mass of zinc in the products of the reaction, x g = 99 g

The correct option is;

C. 99 g

12. The quantity that must be used to convert from one chemical substance to another is the mole ratio

The correct option is D. mole ratio

13. The maximum mass of the product that could form in a reaction is called the theoretical yield, which is option C.

The correct option is C. Theoretical

14. 1 mole of O₂ produces 2 moles of water (H₂O), therefore;

3 × 1 = 3.0 moles of O₂ will produce 3 × 2 = 6 moles of H₂O

The correct option is

A. 6.0 mol H₂O

15. 2 mole × 2.02 g/mol = 4.04 g of H₂ (g) produces 32.05 g CH₃OH (l)

∴ 5 g of H₂ (g) will produce 32.05 g × 5/4.04 ≈ 39.6658416 g ≈ 39.7 g of CH₃OH

The correct option is;

D. 39.7 g CH₃OH

16. 2 (2 × 216.59 g = 433.18 g) moles of HgO produces 1 mole of O₂

1.5 mole of O₂ will be produced by 1.5 × 2 = 3 moles (3 × 216.59 g = 649.77 g ≈ 650 g) of HgO

The correct option is A 650 g HgO

17. 3 moles of H₂ produces 2 moles of NH₃

The number of moles of NH₃ in 100 g of NH₃, n = 100 g/(17.04 g/mol) = 5.868544 moles

The number of moles of H₂ that will produce 5.868544 moles of NH₃ = 3/2 × 5.868544 moles = 8.802816 moles ≈ 8.8 moles

Therefore, the correct option is;

D. 8.8 mol H₂

18. The theoretical yield of PbO = (223.2/331.2) × 9.90 g = 6.67173913 g

The percentage yield = (5.51 g)/(6.67173913 g) × 100 ≈ 82.6%

The correct option is option B 82.6%.

Bonds formed when two atoms or compounds respectively donate and receive electrons are named iconic bonds and readily dissociate in water.

Electrostatic attraction between ions with opposing charges in a chemical molecule creates an ionic bond, also known as an electrovalent bond. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this kind is created. If an atom receives electrons, it becomes a negatively charged ion (cation), but if it loses them, it becomes a positively charged ion (cation) (anion).

Ionic or electrovalent compounds are produced via ionic bonding, and the compounds generated between nonmetals and alkali and alkaline-earth metals serve as the best examples of this type of compound. The electrostatic forces of attraction between opposite charges and repulsion between similar charges orient the ions in these types of ionic crystalline solids so that every positive ion is surrounded by negative ions.

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Answer:

See Explanation

Explanation:

Given

2500 meters

200 grams

Required

How do they compare?

You can't compare these two measurements in terms or size, units and measurements because they measure two different quantities

2500 meters measures length or distance

while

200 grams measures mass of objects

Answer:

The element was one of the alkaline metals, the dull appearance comes from the metal reacting with oxygen and oxidizing its outer surface as alkaline are known for their enormous reaction with oxygen in the air and water.

Another ability of this group of elements is the ability to conduct electricity. And they are also easy to cut with a kitchen knife.

Answer:

A b/c aluminum

Explanation:

don't forget to follow rate like

(1) The element with an electron configuration of    1s22s22p63s23p64s23d6 is Iron (Fe).

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the iron(Fe) .we have seen that all orbitals is completely filled before D orbital.

(2) The element with an electron configuration of 1s22s22p63s23p6 is Argon (Ar)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the Argon(Ar) .we have seen that all orbitals  is completely filled.

(3) The name of the element with a valence electron configuration of 4s1 is Potassium (K)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of thePotassium (K) .we have seen that all orbitals  is completely filled before  4s1.

(4) The name of the element with a valence electron configuration of 2s22p5 is Flourine (F)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the Flourine (F) .we have seen that all orbitals  is completely filled before  2p5.

A. An element with the valence electron configuration 3s1 would form a monatomic ion with a charge of +1. In order to form this ion, the element will lose one electron from the 3s subshell.

B. An element with the valence electron configuration 3s23p3 would form a triatomic ion with a charge of -3. In order to form this ion, the element will gain three electrons from the 3s and 3p subshells.

Elements achieve an inert gas configuration by gaining or losing electrons to attain a full valence shell of electrons, resulting in a stable electron configuration. This is also known as having a complete octet in their outermost energy level.

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Answer:

6

Explanation:

number of protons equal number of electrons for the atom to be stable

Hypotonic, hypertonic, and isotonic are terms used to describe the concentration of solutes in a solution compared to the concentration of solutes in a cell or another solution.

Hypotonic solutions have a lower osmolarity (concentration of solutes) compared to the inside of a cell. When a cell is placed in a hypotonic solution, water will flow into the cell in an attempt to equalize the concentrations. This causes the cell to swell and potentially burst. Hypotonic solutions are commonly used in medical settings to hydrate patients and replenish fluid loss.

Hypertonic solutions have a higher osmolarity compared to the inside of a cell. When a cell is placed in a hypertonic solution, water will flow out of the cell, causing it to shrink. Hypertonic solutions are often used to draw excess fluid out of swollen tissues or to dehydrate and preserve food.

Isotonic solutions have the same osmolarity as the inside of a cell. When a cell is placed in an isotonic solution, there is no net movement of water. Isotonic solutions are frequently used in medical treatments, such as intravenous fluids, to maintain proper fluid balance and prevent cell damage.

In summary, hypotonic solutions have a lower solute concentration, hypertonic solutions have a higher solute concentration, and isotonic solutions have an equal solute concentration compared to the inside of a cell.

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Answer:

When matter interact with EMR then spectrum is obtained. We can understand both spectra using Bohr's hydrogen spectrum. let's have a look on Bohr's hydrogen spectrum what does it say. It says when a electron gains energy it moves from one energy level to other(lower to higher) which is Absorption phenomenon. When the electrons returns from excited state to ground state they emits several spectral lines. this spectrum is called as emission spectrum. inshort the

Emission spectrum is spectrum of electromagnetic radiations that were emitted from the higher energy state(Excited state) to lower energy state(Ground state). and study of emission spectrum is known as AES (Atomic Emission spectroscopy).

When an atom or ion is subjected to EMR, it absorbs certain level of radiations, and when this absorbed energies are studied under spectroscopy they are plotted as absorption spectrum, and study of Absorption spectrum is known as AAS (Atomic Absorption spectroscopy).

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Answer:

True

Density = mass/volume

Suppose that a block has a mass of 20 g and a volume of 20 cm^3.

Density = 20 g/20 cm^3 = 1 g/cm^3

Now, you cut the block in half. The half-block has a mass of 10 g and a volume of 10 cm^3.

The density of the half-block is

Density = 10 g/10 cm^3 = 1 g/cm^3

The density stays the same, even though the size of the sample has changed.

Explanation:

Answer:

✅True

Explanation:

Density is an intensive physical property because the density of a given substance does not change with the size of the sample.

IamSugarBee

Answer:

well person with a question it would be 356 an atom for eveyday of the year but every four years it would be 366 atoms

Explanation:

Given that argon is an inert element and calcium is the ion, calcium must lose two electrons in order to have 18 electrons. When an atom loses two electrons, it becomes positively charged with a positive charge of two. As a result, a calcium ion with a positive charge is isoelectronic with argon.

Toppr confirmed

C) Isoelectronic species are those that have the same number of electrons.

Ca has a total of 20 electrons.

Ca+2 has a total of 18 electrons.

Because Ca +2 has 18 electrons, all species with 18 electrons are isoelectronic with Ca +2.

Argon is a noble gas that contains 18 electrons. As a result, argon (Ar) is isoelectronic with Ca +2.

.Calcium has an atomic number of 20. This means that the nucleus of a neutral calcium atom contains 20 protons. A neutral calcium atom has 20 electrons as well. A neutral calcium atom's electron configuration is 1s2 2s 2 2p 6 3s 2 3p 6 4s 2.

A calcium 2 + ion now has 18 electrons after losing two valence electrons. A Ca 2 + ion's electron configuration is 1s 2 2s 2 2p 6 3s 2 3p 6, which is isoelectronic with the noble gas argon.

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Answer:

The choose 2. H2O , HCN

I hope I helped you^_^

Answer:

E is the anwser