If an unknown solution is a poor conductor of electricity, which of the following must be true?
a)The solution is highly ionized
b)The solution is slightly ionized.
c)None of these
d)The solution is slightly reactive.
e)The solution is highly reactive.

Answer:

Scientific investigations discover evidence that helps science advance, and the purpose of scientific investigations generally is to test hypotheses. Finding evidence to support or disprove hypotheses is how science advances.

Explanation:

The claim that scientific knowledge is based on observation and inference is that science is always about  empirical evidence , and when making observations , we can get some evidences and inference which serves a conclusion gotten on basis of evidence and reasoning.

Science knowledge serves as the knowledge that is based and focus on  empirical evidence.

It should be noted that in  Science disciplines  their is sharing of common rules of evidence  which is needed in  evaluation of  explanations about natural systems.

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Equilibrium is a state of balance or a stable situation where the opposing forces cancel each other out and where no changes are occurring.

Your information is incomplete. Therefore, an overview will be given. In a chemical reaction, chemical equilibrium is a state where the reactants and products are present in concentrations that have no further tendency to change with time.

In terms of volume changes within a system at equilibrium, the following applies:

In conclusion, if you increase the pressure of a system at equilibrium, the stress will be reduced by reaction that favors the side with the fewest moles of gas.

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Answer:

anticyclone

Explanation:

1) The electron arrangements are

\(A - 1s^2 2s^2 2p^2B - 1s^2 2s^2 2p^5\)

The compound that is formed by the combination and A and B is \(AB_{4}\)

The distribution of electrons among an element's atoms' various energy levels, or electron shells, is referred to as the element's electron arrangement.

The innermost electron shell can accommodate up to 2 electrons, the second shell up to 8 electrons, and so on, with each succeeding shell similarly accommodating up to 8 electrons.

As such, we can see that there are four electrons on the outermost shell of A and that gives the formula of the compound as  \(AB_{4}\).

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Answer:

5

Explanation:

Answer:

-1

Explanation:

electrons are negative

a. The potential for an Fe3+/Fe2+ half cell when using a saturated calomel electrode (SCE) is +0.9944V, and when using a standard hydrogen electrode (SHE) is +0.750V. When using a standard silver/silver chloride electrode (Ag/AgCl) the potential is +0.947V.

Here, correct answer will be

b. A selective electrode is an electrode that is designed to measure the activity of a specific ion in an aqueous solution. Selective electrodes are able to measure the activity of the ion of interest in the presence of other ions that are present in the solution.

c. Ion selective membranes are thin, permeable layers that allow only certain ions to pass through them. They are used in ion-selective electrodes, which are specialized electrical meters that measure the activity of a particular ion in a solution. Ion-selective membranes can be made from organic materials, such as cellulose acetate, or from inorganic materials, such as silica.

d. Alternating current (AC) is an electric current that reverses direction periodically. In contrast, direct current (DC) is an electric current that flows in one direction only.

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the density of the oxygen gas sample is 1.123 g/L. The density of a gas can be calculated using the ideal gas law equation: Density = (Molar mass * Pressure) / (Gas constant * Temperature) In this case, we are given that the density of oxygen gas is g/L. We also know the pressure is 0.893 atm and the temperature is 41 °C.

To convert Celsius to Kelvin, we add 273.15 to the Celsius temperature. So, the temperature in Kelvin is 41 + 273.15 = 314.15 K. Now, let's solve the equation for density using the given values Density = (Molar mass * Pressure) / (Gas constant * Temperature) To use the ideal gas law equation, we need to convert the temperature to Kelvin.


Since the molar mass of oxygen is 32 g/mol and the gas constant is 0.0821 L·atm/(mol·K), we can substitute these values into the equation g/L = (32 g/mol * 0.893 atm) / (0.0821 L·atm/(mol·K) * 314.15 K) Now, we can calculate the density by simplifying the equation.

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Answer:

Matthias Jacob Schleiden was a German botanist who, with Theodor Schwann, cofounded the cell theory. In 1838 Schleiden defined the cell as the basic unit of plant structure, and a year later Schwann defined the cell as the basic unit of animal structure.

Explanation:

Answer:

94.4 Psi

Explanation:

Given that;

P1 = 105 psi

T1 = 25˚C + 273 =  298 K

P2 = ?

T2 = – 5˚C + 273 = 268 K

P1/T1 = P2/T2

P1 T2 = P2T1

P2 = P1T2/T1

P2 = 105 * 268/298

P2= 94.4 Psi

The point group of 1,2-diiododisilane is \(\(C_{2v}\)\), and it has \(\(B_1\) Si-H\) vibrations that are IR active.

To determine the point group of a molecule, we need to consider its symmetry elements, such as rotation axes, mirror planes, and inversion centres. By analyzing the given diagram of 1,2-diiododisilane, we can identify its point group as follows:

(a) Point Group:

Looking at the diagram, we observe that the molecule possesses the following symmetry elements:

1. A C2 rotation axis passes through the middle of the molecule, bisecting the two iodine atoms.

2. A perpendicular mirror plane that bisects the molecule and passes through the iodine atoms.

Considering these symmetry elements, the point group of 1,2-diiododisilane is \(\(C_{2v}\).\)

(b) IR-Active Si-H Vibrations:

To determine the IR activity of Si-H vibrations, we need to consider the irreducible representations of the vibrational modes under the \(\(C_{2v}\)\) point group.

In the \(\(C_{2v}\).\) point group, the vibrational modes can be classified into three irreducible representations: \(\(A_1\), \(A_2\), and \(B_1\)\). The symmetry labels for the Si-H stretching vibrations can be found by inspecting the reducible representation resulting from the direct product of the vibrational mode with the irreducible representation of the \(\(C_{2v}\).\) point group.

After analyzing the reducible representation, we find that the Si-H stretching vibrations belong to the \(\(A_1\)\) and \(\(B_1\)\) irreducible representations.

Since the \(\(A_1\)\) representation contains symmetric vibrations, which do not change the dipole moment of the molecule, these vibrations are IR inactive. On the other hand, the \(\(B_1\)\) representation contains asymmetric vibrations, which can change the dipole moment of the molecule, making them IR active.

Therefore, in 1,2-diiododisilane, there are \(\(B_1\) Si-H\) vibrations that are IR active.

Therefore,

(a) The point group of 1,2-diiododisilane is \(\(C_{2v}\).\)

(b) There are \(\(B_1\) Si-H\) vibrations that are IR active in 1,2-diiododisilane.

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Note: The correct question would be as

5. (7 points) The following diagram shows one conformation of 1,2-diiododisilane. HASI $14 н (a) What is the point group? (b) How many Si-H vibrations are IR active?

The correct answer is B) zymomonas. Ethanolic fermentation, which is the process of converting sugars into ethanol (alcohol) and carbon dioxide by yeast, is commonly used in the production of beverages like beer, wine, and pulque.

While there are various microorganisms that can carry out fermentation, yeast is the primary organism involved in ethanolic fermentation.

Zymomonas is a type of bacteria that is known for its ability to perform ethanolic fermentation. It can efficiently convert sugars into ethanol and carbon dioxide, making it suitable for industrial applications such as the production of alcoholic beverages.

Clostridium, Leuconostoc, Lactobacillus, and Propionibacterium are other types of microorganisms, but they are not primarily involved in ethanolic fermentation. They may have different metabolic pathways or be associated with other fermentation processes, but they are not the main organisms responsible for the production of ethanol in the context of beverage production.

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At the end of the diffusion process, the concentration of substances on each side is. equal. This is because the diffusion process causes the substances to move from areas of high concentration to areas of low concentration until they are evenly distributed.

What is concentration?
Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molarity, number concentration, as well as volume concentration are four different categories of mathematical description. Any type of chemical mixture can be referred to by the term "concentration," but solutes as well as solvents in solutions are most frequently mentioned. There are different types of molar (amount) concentration, including normal concentration as well as osmotic concentration. The word "concentration" is derived from the French verb "concentrer," which means "to put at the centre" and comes from the root con-.

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Answer:

When the transfer of electrons occurs, an electrostatic attraction between the two ions of opposite charge takes place and an ionic bond is formed. A salt such as sodium chloride (NaCl) is a good example of a molecule with ionic bonding

Methane is a chemical compound with the molecular formula CH₄. The mass flow rate of methane is approximately 0.0004346 kg/s.

Methane is a hydrocarbon, meaning it consists of hydrogen and carbon atoms. It is a colorless, odorless gas and is lighter than air. Methane is highly flammable and is a potent greenhouse gas, contributing to climate change when released into the atmosphere. It is produced naturally through the decomposition of organic matter and is also a byproduct of various industrial processes, agriculture, and livestock farming.

To calculate the final result, we need specific values for pressure and temperature. In your previous question, you provided the temperature as 15°C and the pressure as 150 kPa. Let's plug in these values and calculate the mass flow rate:

\(n = (150,000 Pa * \pi * (0.5 m)^2) / (8.314 J/(mol.K) * (15 + 273.15 K))\\n = 0.02712 mol\)

Mass flow rate = n × molar mass

Mass flow rate ≈ 0.02712 mol × 16 g/mol

Mass flow rate ≈ 0.4346 g/s

Mass flow rate (in kg/s) = Mass flow rate (in g/s) / 1000

Mass flow rate (in kg/s) ≈ 0.4346 g/s / 1000

Mass flow rate (in kg/s) ≈ 0.0004346 kg/s

Therefore, the mass flow rate of methane is approximately 0.0004346 kg/s.

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Answer:

5.81g of AgNO₃ must be added

Explanation:

The solution contains 2.00g of sodium chloride.

Based on the reaction, 1 mole of NaCl reacts per mole of AgNO₃. To solve this question, we need to find the moles of NaCl in 2.00g and, these moles = Moles of AgNO₃ that must be added:

moles NaCl = Moles AgNO₃-Molar mass: 58.44g/mol:

2.00g * (1mol / 58.44g) = 0.0342 moles NaCl = Moles AgNO₃

Mass AgNO₃ -Molar mass: 169.87g/mol-:

0.0342 moles * (169.87g / mol) =

The quantity of \(AgNO_{3}\) required to be added to the solution in order to allow it to entirely react with Sodium Chloride as per the reaction provided would be:

- \(5.81g\) of \(AgNO_{3}\)

Given that,

The amount of NaCl in the solution = 2g

As we know,

NaCl's 1 mole would react with \(AgNO_{3}\)'s every mole.

To find,

The quantity of \(AgNO_{3}\) required to be added to the solution for complete reaction = ?

We will determine the number of moles in 2g of NaCl which would be the number to be added to the solution.

So,

NaCl moles = Moles \(AgNO_{3}\) - Molar mass

\(= 58.44g/mol\)

Now,

\(AgNO_{3}\) moles \(= 2g\) × \((1mol / 58.44g)\)

\(= 0.0342\) moles NaCl = Moles of  \(AgNO_{3}\)

∵ Mass of  \(AgNO_{3}\)  - Molar mass

=  \(5.81g\) of \(AgNO_{3}\)  

Thus,  \(5.81g\) of \(AgNO_{3}\) is the correct answer.

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Answer:

around 3,000-3,500 degrees Celsius

Explanation:

Temperatures in the lower mantle the reach around 3,000-3,500 degrees Celsius and the barometer reads about 125 gigapascals, about one and a quarter million times atmospheric pressure.

Answer:

The pressure is = 897 torr

Explanation:

Answer:

Ocean tides are caused by the gravitational pull of the moon and the sun. The moon has the greatest effect on the tides. When the Sun, moon, and earth are in a straight line, we have Neap tides. When the Sun, moon, and earth are at right angles we have spring tides. Spring tides are especially high tides while neap tides are especially low tides.

Explanation:

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To Find :

The mass, in grams, of \(1.505 \times 10^{23}\) molecules of carbon disulfide (CS₂).

Solution :

Molecular mass of CS₂ = 76 gm/mol .

It means that mass of \(6.022 \times 10^{23}\) molecules of CS₂ is 76 gm/mol.

Let, mass of \(1.505 \times 10^{23}\) molecules of carbon disulfide (CS₂) is x.

So,

\(x= 76\times \dfrac{1.505 \times 10^{23}}{6.022\times 10^{23}}\\\\x = 76 \times \dfrac{1.505}{6.022}\\\\x = 19 \ gm\)

Therefore, the mass in gram is 19 gm.

Wine was produced 37 years ago (1984 as usual year 15,2021) that is shown in the calculations below.

Reaction rate is calculated using the formula rate = Δ[C]/Δt, where Δ[C] is the change in product concentration during time period Δt. The rate of reaction can be observed by watching the disappearance of a reactant or the appearance of a product over time.

The time can be represented as follows:

t= 2.303\∧ log A0/A

∧= 0.693/t 1/2

The rate of a reaction is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time. Units: s-1, min-1 etc.

The given parameters are as follows:

t1/2=12.3

A0=5.5

A=0.688

t= 2.303/(0.693/12.3) log (5.5/0.688)

t=36.9

t=37 years

Thus, wine was produced 37 years ago (1984 as usual year 15,2021)

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The volume of dry hydrogen gas at STP can be determined by subtracting the vapor pressure of water at the given temperature from the total pressure and then using the combined gas law to calculate the volume.

In this case, with 2.50 L of hydrogen gas collected over water at 40 °C and 767 mm Hg, and a vapor pressure of water at 40 °C being 55.3 mm Hg, the volume of dry hydrogen gas at STP can be calculated.

To determine the volume of dry hydrogen gas at STP, we need to consider the effect of water vapor pressure. At the given temperature of 40 °C, the vapor pressure of water is 55.3 mm Hg. Since the collected hydrogen gas is over water, the total pressure observed is the sum of the pressure of hydrogen gas and the vapor pressure of water, which is 767 mm Hg.

To calculate the volume of dry hydrogen gas at STP, we need to subtract the vapor pressure of water from the total pressure. The pressure due to the dry hydrogen gas alone is then 767 mm Hg - 55.3 mm Hg = 711.7 mm Hg.

Using the combined gas law, which states that the product of the pressure and volume of a gas is proportional to the temperature, we can set up the following equation:

(P1 * V1) / T1 = (P2 * V2) / T2

At STP, the temperature (T2) is 273 K, and the pressure (P2) is 1 atm. Rearranging the equation, we have:

V2 = (P1 * V1 * T2) / (P2 * T1)

Plugging in the values, we get:

V2 = (711.7 mm Hg * 2.50 L * 273 K) / (1 atm * 313.15 K)

Simplifying the equation, we find:

V2 ≈ 623.6 L

Therefore, the volume of dry hydrogen gas at STP is approximately 623.6 L.

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Answer: 1.2 to 5.7 to 7.0 to 9.1

Explanation: Highest acidic begins with 1

Step 1 convert gal to L step 2 convert L to cl

Here given data is water are held in tanker truck volume = 5,500 gallon

So here 1st we have to convert

5,500 gallon = 20,819 Litre

So in 1st step we have to converted gallons into litre

Then 1 litre = 100 centilitre so,

20,819 Litre = 208.19 centilitre

So, in the 2nd step we have to converted litre to centilitre

5,500 gallon = 20,819 Litre and 20,819 Litre = 208.19 centilitre

This is how the conversion from beginning to ending

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Answer:

See explanation

Explanation:

a) considering the structure of the compound, it has 5 hydrogen atoms. Three are attached to C-1, one is attached to C-2 and 1 is attached to C-4.

b) (bond 2)> (bond 1) >(bond 3). As we move from single to triple bond, the magnitude of s character of the bond increases hence the bonds become shorter. Single bonds are longer than double bonds and double bonds are longer than triple bonds.

c) (bond 3) the triple bond is the shortest and strongest of all the bonds. The shorter a bond, the stronger it is.

I think asexual reproduction does not need any reproductive organs while sexual reproduction is the opposite.

Explanation:

not sure tho

Answer:

few offspring of a time= sexual reproduction

offspring genes are not just like one parents gene=sexual reproduction

create many offsprings over time= asexual reproduction

requires to parents= sexual reproduction

Explanation:

hope this will help you...

As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some are transformed into light energy. Light energy, also known as radiation or electromagnetic energy, is a type of kinetic energy that takes the form of visible light waves, such as the light from a match.

Answer:

P-waves (primary or compressional waves) are longitudinal or compression waves, able to move through solids, liquids, and gases at speeds ranging between 300-5,000 metres per second. As they travel through rock, they move particles back and forth in the same direction that the wave is moving

Explanation: