Is "Honey with water" a homogeneous or heterogeneous mixture? explain why?​

Answer:

Cyclone Movement

Explanation:

To form a cyclone, warm, moist air over the ocean rises upward from near the surface. As this air moves up and away from the ocean surface, it leaves is less air near the surface.

So basically as the warm air rises, it causes an area of lower air pressure below.

Water molecules slide around each other, results in making and breaking of hydrogen bonds. As energy is added, molecules move rapidly that they spread in all directions. This phase-change process is called vaporization.

The temperature of liquid water increases as it is heated up until it reaches 100°C. Water that was in  liquid state turns into vapors at this point. This  transition of a liquid into a gas is referred to as Vaporization. The water molecules absorb heat energy. As a result, the particles move more quickly as they gain extra energy until they possess sufficient energy to break free of the liquid molecules to vapors. There are two types of vaporization. 1. Boiling that occurs below the surface of a liquid. The boiling point of a liquid is the temperature at which it begins to boil. Water has a boiling point of 100 °C. 2. Evaporation that take place at the surface of the liquid. Some of the molecules that move  faster are able to overcome the forces of attraction of other molecules and escape from the water's surface.

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When a mycelium infiltrates an unexploited source of dead organic matter, Fungal digestive enzymes are most likely to appear within the food source soon thereafter.

A network of hyphae with fungal filaments is called mycelium. Although they can thrive in various habitats, such as rotting tree trunks, mycelia frequently grow underground. Mycelium can be produced by a single spore. Many fungi, including mushrooms, grow their fruiting bodies from mycelium. Mycelia are crucial to the health of the soil. They decompose organic matter, returning essential elements to the ecosystem as a result.

Fungal enzymes are active in an acidic environment that mimics the physiology of the human stomach. In vitro, fungi enzymes enhance the digestion of dietary fat, protein, and carbohydrates. The research of digestive deterioration with aging has been established using an adapted in vitro technique.

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Answer:

12.

Explanation:

Beryllium is in Group 2 (Column 2) with the atomic number 4.

The atomic number to the next element in the group would be right below it, Magnesium (Mg). Magnesium has an atomic number 12.

The atomic number is the small number on the top left corner of the square of the element.

The molarity of the bromide ion is 0.882 M .

Molar concentration is a measure of the attention of a chemical species, specially of a solute in an answer, in phrases of amount of substance in keeping with unit quantity of solution.

In chemistry, the maximum typically used unit for molarity is the number of moles consistent with liter, Molarity refers to the attention of a compound or ion in a solution, and normality refers back to the molar attention handiest of the acid aspect or handiest of the base component of the solution. therefore, normality gives know-how of the solution's concentration in acid-base reactions.

Pb⁺² + 2Br⁻ => PbBr₂

19.38 ml × 0.5690 M = 11.03 millimoles of Pb⁺²

millimoles of Br⁻  = 2 × millimoles of Pb⁺²

                           = 2 × 11.03

                           = 22.06 millimoles of Br⁻

= 22.06 millimoles/25 ml

molarity = 0.882 M in Br⁻.

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Answer:

67 electrons

Explanation:

Most of the time, the number of protons is the same as the number of electrons because of their relation.

By exchanging electrons with one another, atoms create new materials. When two atoms share at least one pair of electrons, this is known as a covalent link. Ionic bonds form when positive  are attracted to one another and share an electron as a consequence.

When two atoms share , they establish a  connection. Because the two positively charged atomic nuclei and shared, negatively charged electrons in a covalent bond are attracted to one another by electrostatic forces, the bond is stable.

One or more pairs of electrons from each atom are shared by the other atoms to form a covalent link. The two atomic nuclei are pulling these electrons in opposite directions. When the gap between two atoms' electronegativities is too narrow for an electron transfer to take place and form ions, a covalent bond is created.

Reactants interact with one another in a chemical reaction, breaking the bonds that hold their atoms together.

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Answer:

Here's your answer on the Image!

Explanation:

I took the K-12 Quiz

The difference in the temperature change can be explained by the difference in the specific heat capacity for water (4.186 J/g°C) and the specific heat capacity for the metal you used (metals have small values for specific heat capacities).

Specific heat capacity is a material characteristic that quantifies how much heat (in Joules) is needed to change the temperature of 1 g of the material by a single degree (°C or K). Water has a relatively high specific heat capacity (4.186 J/g°C), which means that you need to add 4.186 Joules of heat to increase the temperature of 1 g of water by 1 °C.

On the other hand, metals have small values for their specific heat capacities (0.900 J/g°C for aluminum, 0.386 J/g°C for copper, 0.420 J/g°C for steel), which means that their temperature will drastically change for the same amount of heat invested or taken away.

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4Al + 2Pb(No3)2 → 4Al(No3) + Pb2

Hope this helps!

Answer

AlBr₃ is the limiting reactant

Explanation

Mass of AlBr₃ = 23.45 g

Mole of AlBr₃ = Mass/molar mass = 23.46 g/266.69 g/mol = 0.08797 mol

Mass of Na₂O = 34.57 g

So mole of Na₂O = mass/molar mass = 34.57 g/61.9789 g/mol = 0.5578 mol

Mole ratio of AlBr₃ to Na₂O = (0.08797/0.08797) : (0.05578/0.08797) = 1:6

To know the limiting reactant, write a chemical equation for the reaction and compare the reactant mole ratio in the equation with the mole ratio above.

2AlBr₃ + 3 Na₂O -----> Al₂O₃ + 6NaBr

Mole ratio in the equation = 2:3

Comparing the mole ratio, AlBr₃ will be the first to be completely consumed.

Therefore, AlBr₃ is the limiting reactant

Answer:

a buffalo

Explanation: if its north America it needs to be native from here none of the other are from north America

The rate of the reaction if the concentration of ethanol was doubled will remain the same.

The rate of the reaction tert-butyl ethyl ether, (ch3)3coch2ch3, in acidic conditions, will undergo the SN1 mechanism so the rate of reaction will remain the same.

The rate of reaction is the rate at which a chemical reaction takes region, defined as proportional to the increase inside the concentration of a product in step with unit time and to the lower within the awareness of a reactant in line with unit time. response prices can vary dramatically.

The speed with which a reaction takes area is called the fee of a response. as instance, timber combustion has a high response rate since the manner is fast, and rusting of iron has a low response rate as the technique is slow. Rate is most customarily calculated by the usage of the equation The devices of rate calculated in this manner are s -1.

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Bread grows mold more quickly at room temperature than in the refrigerator because more reactants will have the energy necessary to proceed to products at room temperature than at refrigerator temperatures.

Molds are formed on bread due to various reactions that facilitate the living of the molds on the bread and allow them to reproduce on the bread.

However, as molds are living organisms characterized as fungi, they need enzymes for function.

The enzymes and proteins normally function best at room temperature. On the other hand, when the temperatures are low, such as that of a refrigerator the molds will not have enough energy because the proteins and enzymes will be inactivated. Hence, molds grow on bread quickly at room temperature as compared to bread in a refrigerator.

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Answer:

physical change

Explanation:

melting is a physical change, a physical change does not involve a change in chemical bonds.

Taking into account the reaction stoichiometry, 1 mole of potassium hydroxide would react with 1 mole of hydrochloric acid

In first place, the balanced reaction is:

KOH + HCl  → KCl + H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

You can see that the stoichiometric mole ratio of KOH to that of HCl is 1:1. This means that 1 mole of KOH will require 1 mole of HCl.

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(a) The work done when the gas expands isothermally against a constant external pressure is 87.992 kJ

(b) The work that would be done if the same expansion occurred reversibly is 167.4 J

Given that the mass of methane m is = 4.5 gram = 0.0045 kg

Volume occupies [tex]V_{1}[/tex] = [tex]12.7dm^{3}[/tex]

And volume is increased by [tex]3.3dm^{3}[/tex]

So, the increased volume [tex]V_{2}[/tex] is

12.7 + 3.3 = 16 litres

Given temperature T is 310K

Pressure is given as 210 Torr = 26664.5 Pa

(a) Now, at the given pressure the work done is given by

W = P( [tex]V_{2}[/tex] - [tex]V_{1}[/tex])

W = 26664.5 (16 - 12.7)

W = 87992.85 J

W = 87.992 kJ

(b) At reversible process work done is given by

W = nRT㏑[tex]\frac{V2}{V1}[/tex]

We have the given mass = 4.5 gram

Molar mass of methane = 16

So number of moles is

n = Mass in gram / Molar Mass

n = 4.5 / 16

n = 0.28125

So, work done is

W = 0.28125 × 8.314 × nRT㏑[tex]\frac{16}{12.7}[/tex]

W = 167.4 J

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Using the distribution coefficient, we can calculate the masses removed from water: a) 45.8 g; b) 48.8 g.

If the distribution coefficient between DCM (methylene chloride) and water is 11, that means that the concentration in DCM is 11 times greater than the concentration in water.

a) When equal volumes of the solvents are used, the amount of the solute in DCM (A) will be 11 times greater than the amount of solute remaining in water (B).

A + B = 50.0 g

A = 11 B

11 B + B = 50.0 g

12 B = 50.0 g

B = 50.0 g / 12

B = 4.17 g

A = 11 * 4.2 g

A = 45.8 g

b) Because the solvent volumes are not the same, we have to use concentrations. We can still label the mass of Y in DCM as A, and the mass of Y in water as B. After a single extraction with 125 mL of DCM we get:

A₁ + B₁ = 50.0 g

(A₁ / 125 mL) / (B₁ / 250 mL) = 11

2 A₁ / B₁ = 11

A₁ = 11 B₁ / 2

A₁ = 5.5 B₁

5.5 B₁ + B₁ = 50.0 g

6.5 B₁ = 50.0 g

B₁ = 50.0 g / 6.5

B₁ = 7.7 g

So, after the first extraction, 7.7 g of Y has remained in water. That means that for the second extraction:

A₂ + B₂ = 7.7 g

A₂= 5.5 B₂

5.5 B₂ + B₂ = 7.7 g

6.5 B₂ = 7.7 g

B₁ = 7.7 g / 6.5

B₁ = 1.2 g

After the second extraction, only 1.2 g of Y has remained in water, while 50.0 g - 1.2 g = 48.8 g of Y was removed from water.

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There is no temperature increase during a phase change because the heat supplied to the substance is used to give the molecules in the substance energy to break free from the forces holding them together.

A phase change in a substance refers to the process by which a substance changes from one physical state to another when heat is added or removed from it.

A phase change is also called a change of state.

The various types of phase changes are as follows;

During a phase change, even though heat is entering or leaving the system, the overall temperature of the system does not change. This is because the heat energy supplied is used to overcome the forces between the molecules of the substance.

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To be considered a true hydrate, a compound must follow a few rules, and one of these rules is the color being the same before and after heating. In this case we have a difference in the color, the residue after heating when dissolved in water is forming a yellow brown solution, and in the meanwhile, a colorless solution is formed when a sample of the original compound is dissolved in water, which is not a characteristic of a true hydrate.

In order to remedy this potentially hazardous situation of Hydrochloric acid option b.  put some sodium bicarbonate on the gloves so they can be neutralized.

Hydrochloric acid, additionally known as muriatic acid, is an aqueous answer of hydrogen chloride. it's far a drab answer with a distinctively smelly odor. it's far categorized as a robust acid. It is a part of gastric acid in the digestive structures of maximum animal species, which include human beings.

Hydrochloric acid (HCl) is generally used for the neutralization of alkaline marketers, as a bleaching agent, in the food, textile, metallic, and rubber industries. it's far neutralized if launched into the soil and it rapidly hydrolyzes while exposed to water.

Hydrochloric acid is a clean, toxic liquid. it is a caustic chemical and notably corrosive, which means it right away reasons severe damage to tissues, such as burning, on touch. this text discusses poisoning from swallowing or breathing in hydrochloric acid.

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Disclaimer:- your question is incomplete, please see below for the complete question.

The hydrochloric acid utilized in this experiment can often discolor gloves if it is spilled on them during use. If this does occur, what should be done in order to remedy this potentially hazardous situation?

a. Gloves are not needed in this experiment, this question is invalid.

b. put some sodium bicarbonate on the gloves so they can be neutralized.

c. Remove the glove and wash your hand prior to putting a new pair on.

d. wash the gloves off and continue to use them.

Answer:Many of the physical properties of solutions differ significantly from those of the pure substances discussed in earlier chapters, and these differences have important consequences. For example, the limited temperature range of liquid water (0°C–100°C) severely limits its use. Aqueous solutions have both a lower freezing point and a higher boiling point than pure water. Probably one of the most familiar applications of this phenomenon is the addition of ethylene glycol (“antifreeze”) to the water in an automobile radiator.

Explanation:

Aldol condensation is an easy way of making carbon-carbon bond.

In the field of chemistry, we can describe aldol condensation as a type of bond that occurs due to electrophilic substitution at the alpha carbons of the enol.

Aldol condensation is known to be the easiest way for one carbon to form bonds with another carbon.

Such an aldol reaction that takes place between carbonyl compunds instead of aldehydes or enols is referred to as crossed aldol condensation.

Aldol reactions are known to be an important part of synthesizing organic compounds as carbon-carbon bonds are formed due to it.

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Answer:

0.1498 g of O2.

Explanation:

The Behavior of Gases => Ideal Gas Law.

The ideal gas law is a single equation that relates the pressure, volume, temperature, and the number of moles of an ideal gas, which is:

where P is pressure in atm, V is the volume in liters, n is the number of moles, R is the ideal gas constant (0.082 L*atm/mol*K), and T is the temperature in the Kelvin scale.

So we have to convert pressure from 700.0 mmHg to atm, volume from 120.0 mL to L, and 15 °C to K.

Let's convert pressure taking into account that 1 atm equals 760 mmHg, like this:

Remember that 1 L equals 1000 mL, so 120.0 mL would be equal:

And the conversion from °C to K is just sum °C with 273, so 15 °C in K is:

Finally, we can use the ideal gas formula, solving for 'n' (number of moles) and replacing the data that we have, as follows:

Now, the final step is to convert 4.680 x 10⁻³ moles of O2 to grams using the molar mass of O2 that can be calculated using the periodic table, which is 32 g/mol. The conversion will look like this:

The answer would be that there are 0.1498 g of O2.

Mg2N3  compound having general formula X2Y2  it having cation as +3 charge and bonds ionically with group 15 in a 2:3 ratio.

When two or more elements combine chemically  in a specific mass ratio, the resulting product is called a compound. Compounds can be defined as substances consisting of two or more different types of elements in a fixed ratio of their atoms.

A compound is one where  different types of atoms have joined together to form molecules. For example, water is a compound. The chemical name of water is H2O because it contains two hydrogen atoms and one oxygen atom chemically bonded together.

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The mass of soap formed to satisfy the law of conservation of mass is 918g.

According to the rule of conservation of mass, in a chemical process, mass neither creates nor destroys itself. When coal is burned, for instance, the carbon atom in it transforms into carbon dioxide. Although the carbon atom's shape changes from solid to gas, its mass remains constant.

The mass of the reactants and products in a chemical reaction must equal each other according to the law of conservation of mass.

Fat + sodium hydroxide  = soap + glycerin

890+ 120  = soap  + 92

1010 = soap + 92

soap = 1010 - 92

soap = 918g.

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The volume at which the pH can be used to determine the pKa of the acid is 7.40 ml if the equivalence point occurred at 14.81 ml of added sodium hydroxide.

The weak acid and the conjugate base will have an equal number of moles at the half-equivalence point as the number of moles of sodium hydroxide will neutralize half of the number of moles of the weak acid which will then produce more conjugate base.

The chemical reaction can be given as;

HA = (H^+) + A^-

Calculation of pKa:

pH = pKa + log[A^-]/[HA]

At half equivalence point, pH = pKa

As, ka = 10^-pka

Therefore, ka = 10^-pH

Volume is given which is 14.81 ml. Therefore, the volume that is used to determine the pKa of the acid can be calculated as follows;

14.81/2 = 7.40 ml

Therefore the volume used to determine the pKa of the acid is calculated to be 7.40 ml

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Because boiling point is independent of liquid volume, the boiling point would not vary.

What is boiling point  ?

A liquid's boiling point changes depending on the pressure being applied; the normal boiling point is the temperature at which the vapor pressure is equal to the average atmospheric pressure at sea level (760 mm [29.92 inches] of mercury). Water boils at sea level at 100° C.

The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid turns into a vapor is known as the boiling point of a substance

A liquid's boiling point varies depending on the atmospheric pressure in the area. The boiling point of a liquid is lower in a partial vacuum than it is at atmospheric pressure. A liquid's boiling point is lower under low pressure than it is under air pressure. As a result, water boils at 99.97 °C (211.95 °F) at sea level but at 93.4 °C (200.1 °F) at 1,905 m (6,250 ft) altitude under standard pressure. Various liquids will boil at different temperatures at a given pressure.

Because boiling point is independent of liquid volume, the boiling point would not vary.

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Answer:

yes there R, The Earth’s outer core is in a state of turbulent convection

Explanation:

have good day

Answer:

Technically? Yes. Because the Earth's outer core is in a state of turbulent convection as the result of radioactive heating and chemical differentiation. This sets up a process that is a bit like a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy.

Explanation:

Brainlest, Please!

Based on freezing point depression, the solution that has the lowest freezing point is 30g of KBr dissolved in 100g of water; option B.

Freezing point depression is a phenomenon that occurs when a solute is dissolved in a pure solvent such as water.

When a solute is dissolved in a solvent, the freezing point depression is calculated using the formula below:

Where;

i = number of moles of ions produced

K = mola freezing point depression constant

m = molality

From the data given, i (same salt, KBr) and k are both constants.

Hence, the freezing point depression depends on the molality of the solution.

molality = moles / mass of solvent in Kg

Assuming moles = mass (since salt is the same)

Molality of A = 40 / 0.2 = 200 molal

Molality of B = 30 / 0.1 = 300 molal

Molality of A = 20 / 0.25 = 80 molal

Molality of A = 10 / 0.1 = 100 molal

Hence, solution B will have the highest freezing point depression.

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The mass of the object obtained is 1.32 g and the percent yield is  34.3%.

We know that the reaction equation shows the way the reactants are able to interact so as to obtain the products. We have that;

Number of moles of sodium sulfate = 0.196 M  * 57.9/1000 L

= 0.011 moles

Number of moles of magnesium chloride = 0.398 M * 167/1000 L

= 0.066 moles

Given that the reaction is 1:1, the limiting reactant is sodium sulfate

Then;

Mass of the magnesium sulfate produced = 0.011 moles * 120 g/mol

= 1.32 g

The percent yield of the magnesium sulfate = 0.453 g/ 1.32 g * 100/1

= 34.3%

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