potassium and suflur react to form an ionic compound. what is a physical property of the compound formed

Answer:

normal

Explanation:

The heat of fusion of the  substance can be shown from option B.

The amount of heat energy required to transform a substance from a solid phase to a liquid phase at its melting point is known as the heat of fusion, also known as the enthalpy of fusion. The solid-liquid transition is the subject of a particular category of phase transition enthalpy.

The strong intermolecular interactions that keep a substance's particles organized into a solid lattice are dissipated during fusion, allowing the particles to change into a more disordered, fluid state.

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Answer:

A. chemical energy

Explanation:

Answer:

True

Explanation:

Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage.

For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water which bypasses the conversion to liquid stage and goes straight to the gaseous form.

Answer:

Weak acid

Explanation:

A titration curve is a graphical description of the change in pH of the solution in the conical flask as the reagent is added from the burette. A titration curve can be plotted for the different kinds of acid and base titrations. The volume of the titrant is always plotted as the independent variable and the pH of the solution as the dependent variable. The equivalence point is read off from the titration curve. A titration curve is very important because it shows the pH at various points during the titration.

A weak acid/strong base titration leads to an equivalence point above 7. From the question, we were told that the pH at equivalence point lies around 8. Hence the unknown substance must be a weak acid.

When the volume of a gas is changed from 3.75 L to 6.52 L, the temperature will change from 100. 0 K to 173.86 K.

Temperature of the given gas will be calculated by rearranging the ideal gas equation as:

V₁/T₁ = V₂/T₂, where

V₁ = initial volume of gas = 3.75L

T₁ = initial temperature of gas = 100K

V₂ = final volume of gas = 6.52L

T₂ = final temperature of gas = to find?

Putting all these values on the above equation and calculate for the value of T₂ as:

T₂ = (6.52 × 100) / 3.75 = 173.86 K

Hence, 173.86 K is the required temperature.

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The reaction between a small amount of MnS and a large amount of HCl will form MnCl2 and H2S.  total mass of the products will be 4Xg

The balanced chemical equation for the reaction between MnS and HCl is:

2 MnS + 4 HCl -> 2 MnCl2 + H2S

Let's assume the amount of MnS used in the reaction is x g.

Using stoichiometry, the amount of HCl required can be calculated as 4x g.

The amount of MnCl2 formed will be 2x g and the amount of H2S formed will be x g.

So, the total mass of the products will be 2x + x + x = 4x g.

Note: The value of x can be determined from the experiment or given in the problem. The mass of any excess reactants will also be included in the total mass of products.

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Answer:

For example, if a star is moving toward us, its lines will be observed at shorter wavelengths, which is called "blueshifted". If the star is moving away from us, the lines will appear at longer wavelengths, which is called "redshifted".

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Charles's Law helps us understand the relationship between temperature and volume of a gas when other factors, such as pressure and number of moles, remain constant. The empirical gas law that describes the relationship between the volume and temperature of a gas when the number of moles and pressure are constant is Charles's Law.  

This can be expressed mathematically as: V₁/T₁ = V₂/T₂
Where V₁ and V₂ represent the initial and final volumes of the gas, and T₁ and T₂ represent the initial and final temperatures of the gas, respectively. The relationship can also be stated as: V/T = constant

To illustrate this law, let's consider an example. Imagine a balloon filled with a fixed number of moles of gas at a constant pressure. If we were to heat the balloon by placing it in a warm environment, the temperature of the gas inside the balloon would increase.  

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Answer: All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

Explanation: please mark as brainliest

The question is incomplete, the complete question is;

Atom Number of protons Number of electrons Number of neutrons

1 39 39 52

2 40 40 50

3 39 39 54

4 40 40 51

Based on the information that is given, which atom in the table has the highest mass?

a. 1

b. 2

c. 3

d. 4

Answer:

c

Explanation:

The relative atomic mass is given as; number of protons + number of neutrons. If we take the relative atomic mass of each of the options;

1) 39 +52 = 91

2) 40+50 = 90

3) 39 + 54 = 93

4) 40 + 51 = 91

Thus 3 has the highest mass as seen above, hence the answer given.

Divide the number of moles of NH₃ by the volume of the diluted solution to calculate the concentration of NH₃ in the diluted solution.

To calculate the concentration of NH₃ in a diluted NH₃ solution using colorimetric titration data, you will need to know the volume and concentration of the titrant used, as well as the volume of the diluted NH₃ solution.

1. Determine the volume of the titrant used during the colorimetric titration.

2. Calculate the number of moles of titrant used. This can be done by multiplying the volume of titrant by its concentration.

3. Use the stoichiometry of the reaction to determine the number of moles of NH₃present in the titrated solution. This information can usually be found in the balanced chemical equation for the reaction.

4. Calculate the volume of the diluted NH₃solution.

5. Finally, divide the number of moles of NH₃by the volume of the diluted solution to calculate the concentration of NH₃ in the diluted solution.

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The negative charge of the electron in the 1s orbital is most near the nucleus, and with increasing distance from the nucleus, the electron is less likely to be found. The probability of finding the electron at any given point in space is described by the wave function of the orbital, which has a peak at the nucleus and decreases smoothly with increasing distance from the nucleus.

The 1s orbital is the lowest energy state of the hydrogen atom. In this orbital, the electron has the highest probability of being found closest to the nucleus. This is because the negatively charged electron is attracted to the positively charged nucleus, which means the electron experiences the highest attractive force when it is closest to the nucleus. As the distance from the nucleus increases, the attractive force between the electron and nucleus decreases, and the electron is more likely to be found farther away from the nucleus. Hence, the negative charge is most near the nucleus and with increasing distance from the nucleus.

The 1s orbital is spherical in shape, and it describes the region of space around the nucleus where the electron is most likely to be found. The probability of finding the electron at any given point in space is given by the wave function of the orbital. The wave function of the 1s orbital has a peak at the nucleus and decreases smoothly with increasing distance from the nucleus.

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Answer:

Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists

Answer:

can you give me more info

Explanation:

i think it d or c

i got charts to help

In addition to producing calcium carbonate, the reaction between carbon dioxide and limewater also produces water.

In addition to producing calcium carbonate, the reaction between carbon dioxide and limewater also produces water. When calcium carbonate, which is chalk, is generated, it precipitates, resulting in the appearance of solid chalk particles. The presence of this substance gives the liquid a "milky" look.

When an acid is applied to the test substance, often diluted hydrochloric acid, bubbles start to form. Carbon dioxide is what produces the bubbles. The gas is identified as carbon dioxide using limewater. When carbon dioxide bubbles are introduced to it, it becomes milky.  

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a. Zn is oxidized, Ag+ is reduced.

b. Sn2+ is oxidized, Ce++ is reduced.

c. Au is oxidized, H+ is reduced.

d. Co is oxidized, O2 is reduced.

e. CO is oxidized, O2 is reduced.

In redox reactions, oxidation involves the loss of electrons, while reduction involves the gain of electrons. Let's analyze each reaction:

a. Zn(s) + 2Ag+(aq) → Zn2+(aq) + 2Ag(s)

In this reaction, Zn is oxidized because it loses electrons and forms Zn2+. Ag+ is reduced because it gains electrons and forms Ag(s).

b. Sn2+(aq) + 2Ce++(aq) → Sn(aq) + 2Ce3+(aq)

In this reaction, Sn2+ is oxidized because it loses electrons and forms Sn. Ce++ is reduced because it gains electrons and forms Ce3+.

c. 2Au(s) + 6H+(aq) → 2Au3+(aq) + 3H2(g)

In this reaction, Au is oxidized because it loses electrons and forms Au3+. H+ is reduced because it gains electrons and forms H2.

d. 4Co(s) + 3O2(g) → 2Co2O3(s)

In this reaction, Co is oxidized because it loses electrons and forms Co2O3. O2 is reduced because it gains electrons.

e. 2CO(g) + O2(g) → 2CO2(g)

In this reaction, CO is oxidized because it loses electrons and forms CO2. O2 is reduced because it gains electrons.

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Answer:

weak ion attractions in the table salt

The correct answer is t. In a heterozygous pea plant for height (tt), one allele comes from each parent. Since the plant has two different alleles, only one of the alleles (t) will be carried by a pollen grain produced by the plant.

In summary, the answer to your question is that the pollen grain will carry the allele t. Your question is about a pea plant that is heterozygous for height (tt). To answer your question, I will discuss the alleles involved and the pollen grain. A heterozygous pea plant with the genotype "tt" has two different alleles for the height trait, one dominant (T) and one recessive (t). In this case, the dominant allele (T) determines the plant's height, while the recessive allele (t) is not expressed in the plant's phenotype.

When the pea plant produces pollen grains, each grain will carry only one allele for the height trait. In a heterozygous plant like the one mentioned (tt), the pollen grains will carry either the dominant allele (T) or the recessive allele (t).
In conclusion, a pollen grain produced by a heterozygous pea plant with the genotype "tt" will carry either the dominant allele (T) or the recessive allele (t) for the height trait.

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Answer: The steepness of a ramp affects it by making it easier or harder.

Explanation: It's a bit situational. If you were going up a steep ramp with a heavy load, it will increase the work necessary, whereas if you were going down a ramp, it would decrease the work necessary. If you need this simply put, think about biking up and down a hill. It would be easier going down than up.

Answer:

yes

Explanation:

because I think it is correct fo u

solubility

Explanation:

because solubility is the ability to dissolve especially by using water.

The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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Answer:

1.03 × 10¹

Explanation:

The decimal point is after the first non-zero digit number. The decimal or the number is multiplied by a 10 with an exponent.

The density of carbon monoxide gas at 20°C and 98 kPa is 1.145 g/L.

The ideal gas law is PV = nRT

where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in kelvin.

To find the density of carbon monoxide gas at 20°C and 98 kPa, we can use the ideal gas law to find the number of moles of gas in 1 L of gas at these conditions and then divide the mass of 1 mole of gas by the number of moles to get the density.

First, we need to convert the temperature to kelvin:

20°C + 273.15 = 293.15 K

Rearranging the ideal gas law, we get:

n = PV/RT

We can assume that the volume is 1 L, so:

n = (98 kPa)(1 L) / [(0.0821 L·atm/mol·K)(293.15 K)] = 0.0413 mol

The molar mass of carbon monoxide is 28.01 g/mol, so the mass of 0.0413 mol is:

0.0413 mol x 28.01 g/mol = 1.152 g

Therefore, the density of carbon monoxide gas at 20°C and 98 kPa is:

1.152 g / 1 L = 1.145 g/L

What is density?

Density is a physical property of matter that relates to the amount of mass per unit of volume of a substance. It is typically expressed in units such as grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

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The intermediate formed during the reaction of an aldehyde and base in the first step of an aldol condensation is d. an enolate.

In an aldol condensation, an aldehyde or a ketone reacts with a base to form an intermediate called an enolate. The base deprotonates the alpha-carbon of the aldehyde or ketone to form an enolate ion, which can be stabilized by resonance.

The enolate is a nucleophile and can attack the carbonyl carbon of another molecule of aldehyde or ketone to form a carbon-carbon bond, leading to the formation of a β-hydroxy aldehyde or ketone known as aldol. In the case of an aldehyde, the aldol product can further undergo dehydration to form an α,β-unsaturated aldehyde.

Thus, the intermediate formed during the reaction of an aldehyde and base in the first step of an aldol condensation is an enolate ion.

Therefore, the intermediate formed during the reaction of an aldehyde and base in the first step of an aldol condensation is d. an enolate.

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The equilibrium concentration of CH3OH will be equal to 0.089 if the equilibrium concentration of co is 3.4 × 10–1 m, and the equilibrium concentration of h2 is 6.8 × 10–1 m

An equilibrium concentration is a state when the rate of forward reaction in a chemical reaction becomes equal to the rate of backward reaction

Step 1:

The balanced equation for the reaction is given below:

H2O + Cl2O <=> 2HClO

Step 2:

Data obtained from the question. This includes:

Concentration of H2O, [H2O] = 0.077 M

Concentration of Cl2O, [Cl2O] = 0.077 M

Concentration of HClO, [HClO] = 0.023 M

Equilibrium constant, K =?

Step 3:

Determination of the equilibrium constant. This is illustrated below:

The equilibrium constant for the above reaction is given below:

K = [HClO]^2 / [H2O] [Cl2O]

K = (0.023)^2 / (0.077 x 0.077)

K = 0.089

Therefore, the equilibrium constant for the above reaction is 0.089

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