How Does A Conductivity Apparatus Test Whether A Solution Has Ionic Or Covalent Substance In It (2023)

Chemistry Middle School


Answer 1


Ions complete the flow of electrons to form a circuit.


Answer 2

Answer:When the charged particles move that are present in the ionic compounds only in the conductivity apparatus they complete the circuit by the flow of electrons. Hence, a conductivity apparatus test whether a solution has ionic or covalent substances in it as ions complete the flow of electrons to form a circuit.

Explanation:Hope it helps

or if its correct or not

Related Questions

Write equations that show the dissociation of the following compounds in water. Include states in your answer. Fecl3 potassium phosphate



Here's what I get


Ionic solids dissociate in water to form hydrated ions.

(a) FeCl₃

FeCl₃(s) ⟶ Fe³⁺(aq) + 3Cl⁻(aq)

(b) K₃PO₄

K₃PO₄(s) ⟶ 3K⁺(aq) + PO₄³⁻(aq)

Ammonium sulfate is used as a fertilizer to supply nitrogen to crops. Write the equation for the disassociation of this compound when it dissolves in water and include states in your answer.







HELP. I DONT KNOW WHAT TO DO. Barium sulfate, BaSO4, is made by the following reaction. Ba(NO3)2(aq) + Na2SO4(aq)
BaSO4(s) + 2NaNO3(aq)
What is the theoretical yield of barium sulfate, expressed in grams, if 75.00 g of Ba(NO3)2 were used with an excess of Na2SO4?




We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.

M_r: 261.34 233.39

Ba(NO₃)₂ + Na₂SO₄ ⟶ BaSO₄ + 2NaNO₃

m/g: 75.00

1. Moles of Ba(NO₃)₂

2. Moles of BaSO₄

The molar ratio is (1 mol BaSO₄/1 mol Ba(NO₃)₂

3. Mass of BaSO₄

In producing a certain drug, one synthetic route involves three steps with percentage yields of 87.2%, 91.1%, and 86.3%. An alternate synthesis uses two steps with percentage yields of 85.5% and 84.3%. What is the three step synthesis overall yield? What is the two step synthesis overall yield?



68.6 %; 72.1 %


The overall percentage yield for a multi-step synthesis is the product of the percentage yields for each individual step.

For the three-step synthesis

Overall yield = 0.872 × 0.911 × 0.863 = 0.686 =68.6 %

For the two-step synthesis,

Overall yield = 0.855 × 0.843 = 0.720 = 72.1 %

50 POINTS!!!!! Which of the following is a characteristic of robust scientific knowledge?

It is frequently re-examined.
It is rarely subjected to arguments.
It has been disproven several times.
It develops over a short duration of time.


Robust scientific knowledge is one that is frequently re-examined.

We can define as scientific knowledge all information generated through a rigorous methodology of data collection, observations and experiments, regardless of the scientists' personal beliefs, but through a series of meticulous steps, the objective of scientific knowledge is to find a solution to a problem in a particular subject.

Robust scientific knowledge is one that is frequently re-examined, as science is not exact, it has a provisional character that is subject to change or replacement based on the emergence of new evidence or data referring to a topic.

Accurate scientific knowledge actively contributes to social and technological development, by proposing the institution of critical thinking, transformation and human evolution through the development of knowledge.

Learn more here:

Answer: It is Frequently re-examined

Consider the molecules HCl, HBr, HF, and HI. Which would you expect to have the highest boiling point and why A) HBr because it has the highest mass and the most electrons
B) HCl, because it experiences hydrogen bonding
C) HF, because it has the strongest intermolecular force
D) HI, because it experiences ion dipole forces



C) HF, because it has the strongest intermolecular force


The electronegativity difference ΔEN between H and F is so high that HF has especially high dipole-dipole forces, which we call hydrogen bonds. They are the strongest intermolecular forces, and they are responsible for the high boiling point of HF.

A) is wrong. HI has a higher mass and more electrons than HBr.

B) is wrong. There is no hydrogen bonding in HCl.

D) is wrong. There are no ion-dipole forces in HI.




What is the mass of a sample of water that takes 2000 kJ of energy to boil into steam at 373 K. The latent heat of vaporization of water is 2.25 x 10^6 J kg-1.




The formula relating the mass m of a sample and the heat q to vaporize it is

q = mL, where L is the latent heat of vaporization.

Tea is a solution of caffeine, plant pigments, and other chemicals dissolved in water. Identify each component of the solution as a solvent or a solute.
Water is a
O solute.
O solvent.


Component of the solution as a solvent or a solute is:

  • Water is a solvent
  • Caffeine is a solute
  • plant pigments are a solute

what are solvent and instance?

Solvent Examples. commonplace examples of solvents consist of water, ethanol, methanol, and acetone. The term 'solvent' may be defined as a substance that has the capacity to dissolve a given solute to form a solution with it.

what is a solute instance?

A substance this is dissolved in an answer is called a solute. In fluid answers, the amount of solvent gift is extra than the amount of solute. One fine instance of solute in our everyday interest is salt and water. Salt dissolves in water and consequently, salt is the solute.

Learn more about Chemicals at



Water is a solvent, Caffeine is a solute, Plant pigments are a Solute.


An increase in temperature will effect vapor pressure by:


Answer: Increases.

Explanation: As the temperature of a liquid or solid increases its vapor pressure also increases. Conversely, vapor pressure decreases as the temperature decreases.

Match these items. phosgene
1. a halogenated gas that may damage the ozone layer
2. World War I poison gas
3. a typical reaction of alkenes
4. insecticide
5. aromatic molecule



Here's what I get



If anyone else needs a simplified version, this is the other way. (It's just for reference. The person above is right though.)

1. A halogenated gas that may damage the ozone layer - Freon

2. World War I poision gas - phosgene

3. A typical reaction of alkenes - addition

4. Insecticide - DDT

5. Aromatic molecule - benzene

The variety of organisms within an ecosystem is characteristic of which type of diversity? a. Genetic diversity
b. Ecosystem diversity
c. Species diversity
d. Regional diversity
Please select the best answer from the choices provided
Mark this and return
Save and Exit



c. Species diversity


Because is talking about of organisms, it means, living beings and they are classified like species. There are species of animals and plants

Answer:species diversity


Science is perfect, but technology is not. True or False





i would go with false

hope that helped

Tell how many significant figures this number contains. 0.00000006



1 significant figure is the Answer


The zeros are not trailing after the digit 6. Hence they are not significant.


Non zero digits are always significant.

For example 2356 has 4 significant figures

Zeros between Non zero digits are always significant.

3007 has 4 significant figures

In a decimal trailing zeros are significant.

For example 0.0003 has 1 significant figures and 0.003000 has 4 significant figures.

this contains one significant figure

hope that helped

Which is an acid-conjugate base pair?



An acid and a base that are the same except for an H+. *Apex


Correct answer for Apex quiz.


This is when an acid dissociates into it's ions in water, it loses a



It is the base member (X-) of a pair compounds that transform into each other by gaining or losing.

For any point on Earth's surface, its height above sea level is called its


Answer: Elevation


The altitude of a feature of the earth's surface is usually called its elevation, vertical distance from a datum plane, usually mean sea level to a point above the earth. Often used synonymously with altitude, elevation is the height on the earth's surface and altitude, the height in space above the surface.

How many moles of HCl are present in 1.2 L of a 1.84 M HCl solution? Select one:
a. 17
b. 1.7e4
c. 20
d. 620



2.21 moles of HCl are present in 1.2 L of a 1.84 M HCl solution


Molarity (M),

Molality (m),

Normality (N),

Mass %,

Parts per million(ppm), billion(ppb), thousands(ppt) are some of the terms we use to represent the concentration of the solution that is to represent the amount of solute present in a solvent.

Molarity is moles of solute present in 1L of the solution.

The formula to find Molarity is

and its unit is mol/L

Rearranging the formula

We get

moles = Molarity × Volume

Plugging in the values


For the reaction 2Na + Cl2 → 2NaCl, how many grams of chlorine gas are required to react completely with 57.5 mol of sodium?



1019.27 g.


  • For the balanced reaction:

2Na + Cl₂ → 2NaCl,

It is clear 2 moles of Na with 1 mole of Cl₂ to produce 2 moles NaCl.

  • Firstly, we need to calculate the no. of moles of Cl₂ is needed to react with 57.5 mol Na:

2 moles of Na need → 1 mol of Cl₂, from the stichiometry.

57.5 moles of Na need → ??? mol of Cl₂.

∴ The no. of moles of Cl₂ is needed to react with 57.5 mol Na = (1 mol)(57.5 mol)/((2 mol) = 28.75 mol.

∴ the mass of Cl₂ is needed to react with 57.5 mol Na = (no. of moles of Cl₂)(molar mass of Cl₂) = (28.75 mol)(35.453 g/mol) = 1019.27 g.

During a combustion reaction, 5.00 grams of oxygen reacted with 5.00 grams of CH4. What is the amount of the leftover reactant?
4.00 grams of methane
3.75 grams of methane
2.25 grams of oxygen
1.75 grams of oxygen



3.75 grams of methane


Given parameters:

Mass of oxygen gas = 5g

Mass of CH₄ = 5g

Unknown parameters:

Amount of excess reactant = ?


In order to find the amount of leftover reactant we need to know the reactant that is in excess and in limited supply. The amount of reactant in short supply will determine the extent of the reaction.

Now, we need to write the balanced reaction equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

We first find the number of moles of the reactants.

Number of moles of methane =

Number of moles of methane = = 0.3125mole

Number of moles of oxygen = = 0.156mole

From the equation:

1 mole of methane reacts with 2 moles of oxygen gas

x moles of methane reacts with 0.156moles of oxygen gas

2x = 0.156

x = 0.078moles

We see that the methane is in excess and oxygen gas is in short supply in the reaction.

The amount of excess methane = 0.3125 - 0.078 = 0.2345moles

Now we convert it to mass:

Mass = number of moles x molar mass = 0.2345 x 16 = 3.75grams


3.75 grams of methane


Got it right on the exam

The order in which atomic orbitals are filled is based on what factor?




There are principles that guides the distribution of electrons into the energy levels in an atom. Some of the principles are:

1. The maximum number of electrons in the orbitals of sublevels are:

2 electrons for s-sublevel with one orbital

6 for p-sublevel with 3 orbitals

10 for d- sublevel with 5 orbitals

14 for f-sublevel with 7 orbitals.

The maximum number of electrons in an orbital is 2.

2. Aufbau principle: it states that sublevels with lower energy are filled up before those with higher energy. Sublevels have pattern of filling.

3. Pauli exclusion principle: it states that no two electrons can have the same set of the four quantum numbers.

4. Hund's rule of maximum multiplicity: electrons goes into degenerate orbitals of sub-levels singly before pairing starts.

Force 1: The squeezing force applied to remove water from a wet cloth Force 2: The gravitational force exerted by Earth on the moon Which statement is true about the forces? (3 points) Question 5 options: 1) Both are contact forces. 2) Both are non-contact forces. 3) Force 1 is a contact force and Force 2 is a non-contact force. 4) Force 1 is a non-contact force and Force 2 is a contact force.



3) Force 1 is a contact force and Force 2 is a non-contact force.


Force is a phenomenon that causes a change in phsical quantity. It is expressed as the product of mass and acceleration.

Contact force is a type force that involves physical contact between two bodies or more. An example is the pulling of a cart. Also, when the wet clothe is being squeeze, a physical contact is established.

Non-contact force occurs between bodies in which there is no physical contact. An example is gravitational force of attraction between two bodies.

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