what are four states, or phrases of matter? describe the shape and volume properties of each phase, can they change or are they fixed?

Answer:

mu answer is A

Explanation:

i think it is a popular opinion because its the opinion of a country

The molecular geometry around the central atom of each of the following species: For CF₄ is tetrahedral, for NCl₃ is trigonal pyramid, for SO₂ is bent,  Si₂H₆ is tetrahedral, and for  (NH₂)₂CO is trigonal planar.

The three-dimensional arrangement of atoms in a molecule is known as molecular geometry, also referred to as the molecular structure. Understanding a compound's molecular structure can be useful in identifying its polarity, reactivity, phase of matter, color, magnetism, and biological activity.

A molecule's three-dimensional shape in space is known as its molecular geometry. The surrounding atoms and electron pairs as well as the central atom influence it. Using the Valence Shell Electron Pair Repulsion (VSEPR) method, the shape of the majority of molecules can be predicted.

To know more about molecular geometry visit:

https://brainly.com/question/7558603

#SPJ4

The Theoretical Yield of the reaction is 2g.

The theoretical yield is the amount of product expected to be recovered in a chemical reaction, assuming perfect conversion of all reactants to products.

To calculate the theoretical yield of your product, you need to know the mass of each of the reactants and the stoichiometry of the reaction.

Let's assume that the reaction is A + B → C. The theoretical yield is equal to the mass of reactant A multiplied by the stoichiometry of C, divided by the stoichiometry of A. The equation looks like this:

Theoretical Yield = (Mass of Reactant A) × (Stoichiometry of C) / (Stoichiometry of A)

For example, if you have 1 g of reactant A, the stoichiometry of C is 2, and the stoichiometry of A is 1, the theoretical yield would be 2 g.

Theoretical Yield = (1 g) × (2) / (1) = 2 g

To know more about Theoretical Yield click on below link:

https://brainly.com/question/14966377#

#SPJ11

Answer:

\(0.8696\ \text{J/g}^{\circ}\text{C}\)

Explanation:

\(m_m\) = Mass of metal = 19 g

\(c_m\) = Specific heat of the metal

\(\Delta T_m\) = Temperature difference of the metal = \(99-23=76^{\circ}\text{C}\)

V = Volume of water = 150 mL = \(150\ \text{cm}^3\)

\(\rho\) = Density of water = \(1\ \text{g/cm}^3\)

\(c_w\) = Specific heat of the water = 4.186 J/g°C

\(\Delta T_w\) = Temperature difference of the water = \(23-21=2^{\circ}\text{C}\)

Mass of water

\(m_w= \rho V\\\Rightarrow m_w=1\times 150\\\Rightarrow m_w=150\ \text{g}\)

Heat lost will be equal to the heat gained so we get

\(m_mc_m\Delta T_m=m_wc_w\Delta T_w\\\Rightarrow c_m=\dfrac{m_wc_w\Delta T_w}{m_m\Delta T_m}\\\Rightarrow c_m=\dfrac{150\times 4.186\times 2}{19\times 76}\\\Rightarrow c_m=0.8696\ \text{J/g}^{\circ}\text{C}\)

The specific heat of the metal is \(0.8696\ \text{J/g}^{\circ}\text{C}\).

The oxygen atom forms a double bond with the carbon atom, which involves sharing two pairs of electrons. However, since the carbon atom is also bonded to two other atoms.

To further explain, a double bond involves sharing four electrons between two atoms, with two of the electrons coming from each atom's valence shell. In the case of the propanal molecule, the oxygen atom has six valence electrons and needs two more to complete its octet, while the carbon atom has four valence electrons and needs four more to complete its octet.

In propanal (also known as propionaldehyde), the oxygen atom forms a double bond with the carbon atom. A double bond consists of two pairs of shared electrons. Therefore, the total number of pairs of electrons shared between these atoms is 2.

To know more about electrons visit:

https://brainly.com/question/18367541

#SPJ11

The  two pairs of electrons shared between the oxygen atom and the carbon atom in a propanal molecule.

We can look at the structure of propanal. Propanal has the chemical formula C3H6O, with a carbonyl group (C=O) located on the second carbon atom. In this carbonyl group, the oxygen atom is double-bonded to the carbon atom. Double bonds involve the sharing of two pairs of electrons between atoms. Therefore, in a propanal molecule, the oxygen and carbon atoms share two pairs of electrons.
There are two pairs of electrons shared between the oxygen and carbon atoms in a propanal molecule, due to the double bond in the carbonyl group.

For more information on electron kindly visit to

https://brainly.com/question/29427403

#SPJ11

Answer:

combustible.

Explanation:

The substances which burn in air are called combustible. Oxygen (in air) is essential for combustion. During the process of combustion, heat and light are given out.

Hope this helped!!!

Answer: flammable

Explanation:

A scientist would use a balance to measure out an exact mass of a dry chemical. A balance is a laboratory instrument that measures mass by comparing a known mass with an unknown mass.

The balance uses a beam with a fulcrum and pans on both sides. The unknown mass is placed on one side of the balance, and known masses are added to the other side until the beam is balanced.

Once the balance is balanced, the mass of the unknown can be determined. This method of measuring mass is highly accurate, making it ideal for scientific experiments that require precise measurements.

To ensure accuracy, the balance should be calibrated regularly and used in a controlled environment to avoid any external factors that may affect the measurements.

To know more about scientist. please visit.....

brainly.com/question/2102672

#SPJ11

The pH of the buffer solution is 5.4

Given a solution which is 0.1 M sodium acetate and 0.01 M acetic acid. This is an acidic buffer solution.

pH=pK

a

+log

[CH

3

COOH]

[CH

3

COONa]

=4.74+log

0.01

0.1

=4.74+1=5.74

Hence, the pH of the buffer solution is 5.74

what is buffer salution ?

The presence of significant amounts of both the conjugate acid, HF, and the conjugate base, F-, allows the solution to function as a buffer. This buffering action can be seen in the titration curve of a buffer solution

a buffer can be composed of dissolved acetic acid (HC 2H 3O 2, a weak acid) and sodium acetate (NaC 2H 3O 2, a salt derived from that acid). Another example of a buffer is a solution containing ammonia (NH 3, a weak base) and ammonium chloride (NH 4Cl, a salt derived from that base)

To learn more about buffer solution visit:https://brainly.com/question/24262133

#SPJ4

Barium sulfate is LEAST soluble in a 0.01-molar solution of Al2(SO4)3. The correct option is a.

To learn more about molar solution, visit:

https://brainly.com/question/26873446

#SPJ11

The two reaction products as they appear in an acidic solution. Hydrogens on oxygen and nitrogen are drawn below:

Higher than that of pure water, an acidic solution has a high concentration of hydrogen ions (H +start superscript, plus, end superscript). A basic solution has a lower concentration of H +start superscript, plus, end superscript than pure water. Ammonia and water are just two examples of simple molecules that hydrogen bonds can affect, but other simple molecules can also be affected. Moreover, the oxygen and nitrogen hydrogen bonds serve crucial functions in biochemistry, with DNA structure being the most well-known example.

An acidic solution is a type of solution that has a pH value of less than 7. The pH scale is a measure of the acidity or alkalinity of a solution. A pH value of 7 is considered neutral, whereas a pH value less than 7 is acidic, and a pH value greater than 7 is basic or alkaline.

Acidic solutions contain a higher concentration of hydrogen ions (H+) than hydroxide ions (OH-), which makes them capable of donating protons. These solutions have a sour taste and can also be identified by their characteristic reactions, such as turning blue litmus paper red. Common examples of acidic solutions include lemon juice, vinegar, and gastric juice in the stomach. Acidic solutions are widely used in industry and research, for example, in battery acid, chemical synthesis, and acid-base titrations.

To learn more about Acidic solutions visit here:

brainly.com/question/13208021

#SPJ4

Complete Question: -

Draw the two products of the reaction as they occur in acid solution. Hydrogens on oxygen and nitrogen should be drawn, if applicable. Select Draw Rings More Erase с H N O H20 H30+ 2 0

Answer:

chemical structure determines the molecular geometry of ca compound by prtraying the arrangement of atoms and chemical bonds in the molecule..

Explanation:

hope this helps any <3

Litmus paper is used in step four of experiment 26a to determine the acidity or alkalinity of the substance being tested.

The primary purpose of using litmus paper is to provide a quick and straightforward method for identifying the pH level of a solution. This is essential because the pH value of a solution can greatly influence the outcome of an experiment, as well as provide vital information about the properties of the substance being tested. In this particular experiment, litmus paper serves as a useful tool for determining whether the solution is acidic or basic without the need for more complex or time-consuming techniques. By simply dipping a strip of litmus paper into the solution, the paper will change color based on the pH of the substance. Red litmus paper turns blue in the presence of a basic solution, while blue litmus paper turns red in the presence of an acidic solution.

This color change is due to the presence of organic dyes in the litmus paper, which react differently to acidic and basic conditions. These dyes are extracted from lichens, specifically the Roccella tinctoria species. Using litmus paper in this experiment allows for the efficient and accurate measurement of the pH value, ensuring that the results are reliable and consistent across multiple tests. In summary, litmus paper is used in step four of experiment 26a to determine the acidity or alkalinity of the substance being tested.

Learn more about acidity at :

https://brainly.com/question/13584094

#SPJ11

Answer:

False

Explanation:

There is no specific threshold or degree of slope steepness at which soil erosion abruptly begins to taper off

Soil erosion is influenced by various factors, including slope steepness, rainfall intensity, soil characteristics, vegetation cover, and land management practices. As slope steepness increases, the potential for soil erosion generally increases due to the gravitational force acting on the eroded materials. However, there is no specific threshold or degree of slope steepness at which soil erosion abruptly begins to taper off. The relationship between slope steepness and soil erosion is generally non-linear. At low slope angles, soil erosion tends to be minimal as the gravitational force is relatively weak. As the slope angle increases, soil erosion typically increases exponentially due to the increased force of gravity. Eventually, as the slope steepness continues to increase, soil erosion may reach a point of maximum potential where the erodibility of the soil and other factors become limiting factors. Beyond this point, the rate of soil erosion may start to taper off, but it does not completely stop. Instead, it may stabilize or decrease slightly compared to the maximum erosion potential observed at steeper slopes.

for more questions on erosion
https://brainly.com/question/13067562
#SPJ8

Answer:

Where is the data table?

Answer:

A

Explanation:

Based on the given information and the densities provided in the table, the unknown element in the alloy is most likely Beryllium. option(a)

To identify the unknown element in the alloy, we need to compare the density of the alloy with the densities of the elements listed in the table.

The density of the alloy can be calculated using the given information. We know that 10.0 grams of the alloy has a volume of 4.20 cm³. Density is defined as mass divided by volume, so we can calculate the density of the alloy as:

Density = Mass / Volume = 10.0 g / 4.20 cm³ ≈ 2.38 g/cm³

Now, we compare the calculated density of the alloy (2.38 g/cm³) with the densities listed in the table. From the given options, the closest density is that of aluminum, which is 2.70 g/cm³. The alloy's density is lower than the density of aluminum, which means it must contain an element with a lower density than aluminum.

The unknown element in the alloy is most likely Beryllium (option A) with a density of 1.85 g/cm³. The combination of 62% aluminum and 38% beryllium in the alloy would result in a density close to the calculated value of 2.38 g/cm³. option(a)

For such more questions on densities

https://brainly.com/question/1749900

#SPJ8

Ethanol is produced when ethane and ethene react with water and a catalyst like sulfuric acid. Adding concentrated sulfuric acid to hot ethanol (acts as a catalyst).

To eliminate carbon dioxide and sulphur dioxide that are created as byproducts, the gases are passed through a sodium hydroxide solution. The main product that is gathered over water is ethene. As a result, dehydration of ethanol produces ethene rather than ethane. The names Mattling acid and Oil of Vitriol are other names for sulfuric acid. It is highly caustic and acidic in nature. It dehydrates and oxidises when  present in higher amounts. It is a clear, syrup-like liquid with no colour or smell. A substance having the chemical formula C 2H 6, ethane is an organic chemical.

Learn more about ethanol here

https://brainly.com/question/25002448

#SPJ4

Answer:

B salt water crocodile

Explanation:

took test and this was right :)

The substance that is a strong electrolyte in an aqueous solution is KI.

Strong electrolytes are substances that completely dissociate into ions when dissolved in water, resulting in a solution that can conduct electricity well.

KI is an ionic compound, meaning it is made up of a metal (potassium) and a nonmetal (iodide) that are held together by ionic bonds. When KI is dissolved in water, it dissociates into its ions (K+ and I-), which allows the solution to conduct electricity effectively.

The other options are, b. C2H6 (ethane), c. C6H6 (benzene), d. C8H18 (octane), and e. CCl4 (carbon tetrachloride), are all non-electrolytes or weak electrolytes, as they do not dissociate into ions when dissolved in water, and their solutions cannot conduct electricity well.

These substances are composed of nonmetal atoms and are held together by covalent bonds.

Learn more about strong electrolytes here:

brainly.com/question/28024466

#SPJ11

Using the given data, we can estimate ΔH∘f for potassium chloride to be approximately -435 kJ/mol.

The formation of solid potassium chloride from its gaseous components involves several steps, including ionization of solid potassium, dissociation of chlorine gas, and formation of the ionic solid. The lattice energy of KCl is -690 kJ/mol, indicating that the formation of the ionic solid is highly exothermic. The ionization energy of K is 419 kJ/mol, the electron affinity of Cl is -349 kJ/mol, and the bond energy of Cl2 is 239 kJ/mol, all of which are involved in the formation of KCl. Finally, the enthalpy of sublimation for K is 64 kJ/mol, which is also a factor in the overall energy change for the reaction. Using these values, we can calculate an approximate ΔH∘f for KCl of -435 kJ/mol.

To know more about potassium chloride,

https://brainly.com/question/22528097

#SPJ11

Radio waves have a lower frequency and energy than X-Rays, so the wavelength of radio waves is longer than X-Rays. longer. Option d is correct.

The best approach to compare them is to say that "A gamma ray has more energy than a radio wave because it has a shorter wavelength and a higher frequency."

The most energetic and high frequency particles are gamma rays. On the other side, radio waves are the EM radiation types with the lowest energies, longest wavelengths, and lowest frequencies.

All electromagnetic radiation travels in a vacuum at the speed of light (c), which is the same for all electromagnetic radiation types, including microwaves, visible light, and gamma rays.

Gamma rays contain the maximum energy because they are the strongest members of the electromagnetic spectrum. As a result, they also have a very low frequency and are better able to penetrate solids since they are less likely to interact with matter.

Learn more about gamma ray here

https://brainly.com/question/30689261

#SPJ11

A) The differential equation is dy/dt = (3/50) * 5 - (y/50) * 5.

B) Equilibrium point: y = 30g. It represents the steady-state chlorine concentration where the inflow rate matches the outflow rate.

C) The chlorine amount will approach and stabilize at 30g. No net change occurs as the inflow matches the outflow.

In part A, we are given the information about the rate at which clean water with chlorine is flowing into the drum and being pumped out to maintain the liquid level. The differential equation dy/dt = (3/50) * 5 - (y/50) * 5 models the rate at which chlorine accumulates in the drum over time. The first term represents the inflow rate of chlorine, and the second term represents the outflow rate. By subtracting the outflow rate from the inflow rate, we get the net rate of accumulation of chlorine in the drum.

In part B, we find the equilibrium point(s) by setting the rate of accumulation (dy/dt) to zero and solving for y. The equation (3/50) * 5 - (y/50) * 5 = 0 simplifies to 3 - y/10 = 0, and solving this equation gives y = 30. This means that when the concentration of chlorine in the drum reaches 30 grams, the inflow rate of chlorine matches the outflow rate, resulting in a steady-state concentration.

The practical meaning of this equilibrium value is that the drum will maintain a constant chlorine concentration of 30 grams in the long run, as long as the inflow and outflow rates remain unchanged.

In part C, using the concept of a phase line, we can expect that the amount of chlorine in the tank will approach and stabilize at the equilibrium value of 30 grams in the long run. Since the inflow rate of chlorine is balanced by the outflow rate, there will be no net change in the concentration over time. The system will reach a stable state where the chlorine concentration remains constant. Thus, the chlorine amount will remain at 30 grams indefinitely.

Learn more about differential equation

brainly.com/question/33433874

#SPJ11

To determine how much of the solution the nurse should use, we need more information. Specifically, we need to know the volume of the saline solution that the nurse wants to produce. Once we have that information, we can calculate the amount of the solution to be used.

The amount of solution the nurse should use depends on the desired volume of the saline solution.
1. Determine the desired volume of the saline solution. Let's call it V (in cc).
2. Calculate the amount of the solution to be used using the following formula:
Amount of solution = V - cc
In order to produce a saline solution, the nurse needs to mix a certain amount of cc of a saline solution with another saline solution.

The exact amount of solution to be used depends on the desired volume of the saline solution.  This gives us the formula: Amount of solution = V - cc. By plugging in the desired volume, we can determine how much of the solution the nurse should use. Remember to always double-check the calculations and ensure the measurements are accurate to achieve the desired concentration of the saline solution.

To know more about solution visit:

https://brainly.com/question/15757469

#SPJ11

Answer:

About 1.48 M.

Explanation:

The formula for molarity is mol/L.

So firstly, you must find the amount of moles in 250 grams of NaCl.

I do this by using stoichiometry. First, I find how nany grams are in a single mole of NaCl. This is around 58.44 grams/mole. Now that I know this, I can now use a stoich table. (250 g NaCl * 1 mol NaCl / 58.44 g NaCl). I plug this into my calculator.

I get that 250 grams of NaCl is equal to about 4.28 moles.

Now I just plug into the formula!

4.28 moles/2.9 L = about 1.48

I've attached a picture of my personal notes below which shows work I have done in similar equations.

For a volume of tissue, the Dose `D would be 1 × 10^6 [cm−2] × 0.0233 [cm2 g−1] × 1 [MeV] / 1.602 × 10^-13 [J MeV−1] × 1.0 [g] = 1.448 mGy]`. The condition that is necessary to make this calculation is to assume a tissue type because the value of the energy absorption coefficient varies with different tissue types.

A) Calculation of dose in mGy for a volume of tissue and fluence of 1 × 10^6 [cm−2] of an energy of 1 MeV

For this calculation, the required formula is:

`Dose = Fluence × Energy Absorption Coefficient`

The fluence given is:

1 × 10^6 [cm−2] of an energy of 1 MeV

The value of energy absorption coefficient varies according to the tissue. Therefore, we have to assume a tissue type.For example, for the tissue type of soft tissue, the value of the energy absorption coefficient is:

0.0233 [cm2 g−1]

Thus, Dose `D = 1 × 10^6 [cm−2] × 0.0233 [cm2 g−1] × 1 [MeV] / 1.602 × 10^-13 [J MeV−1] × 1.0 [g] = 1.448 mGy]`

B) Condition necessary to make this calculation and why?

The condition that is necessary to make this calculation is to assume a tissue type because the value of the energy absorption coefficient varies with different tissue types.

Learn more about energy absorption coefficient at https://brainly.com/app/profile/61424848

#SPJ11

In this reaction Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) Magnesium acts as a reducing agent.

Only question should be of 4 or answer of other questions should also be there.

The last set which is n=4 l=3 m=3 is a valid set

The answer on Edgenuity2020 is n = 4, l = 3, m = 3

Which is the last option.