Which one of the following salts does not produce an acidic aqueous solution?
a. NH4Cl
b. NH4NO3
c. NH4Br
d. NH4I
e. NaNO3
Answers
NaNO3 is the salt that does not produce an acidic aqueous solution. This is because NaNO3 is a salt of a strong base (NaOH) and a strong acid (HNO3), therefore it undergoes complete dissociation in water to form Na+ and NO3- ions. Since both the cation and anion are not acidic, they do not contribute to the acidity of the solution.
On the other hand, NH4Cl, NH4NO3, NH4Br, and NH4I are all salts of a weak base (NH3) and a strong acid (HCl, HNO3, HBr, and HI, respectively), and they undergo partial dissociation in water to form NH4+ and Cl-, NO3-, Br-, and I- ions respectively. The NH4+ ion is acidic in nature, and therefore contributes to the acidity of the solution, making it acidic. The stronger the acid, the more acidic the solution. Thus, NH4Cl would produce the most acidic solution, followed by NH4NO3, NH4Br, and NH4I.
In summary, NaNO3 does not produce an acidic aqueous solution because it is a salt of a strong base and a strong acid, and it undergoes complete dissociation in water. All the other salts listed are salts of a weak base and a strong acid, and they undergo partial dissociation in water, making the solution acidic.
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Related Questions
40o+2 protons electrons And neurons
Answers
Answer: There are few simple rules to follow.
(1) The atomic number is equal to the number of protons.
Z
= number of protons
(2) In neutrally charged elements, the number of electrons is the same as the number of protons.
Z
= number of protons = number of electrons (no charge)
Otherwise, positive charge means that the element lost an electron and negative charge means it gained an electron.
(3) The atomic mass is equal to the sum of the number of protons and number of neutrons.
A
= number of protons + number neutrons
or
A
=
Z
+ number neutrons
So if you say that
Z
= 20 and
A
= 40, then
A
=
Z
+ number neutrons
40 = 20 + number of neutrons
40 - 20 = number of neutrons
Therefore,
number of neutrons = 20
Explanation:
what is the wavelength and energy of a photon with a frequency of 6.57×10^22 Hz
Answers
The energy and wavelength of the photon of frequency 6.57 x 10²² Hz is, 43.861 x 10⁻¹²J and 0.4662 x 10⁻¹⁴ m
It is given that the frequency of the photon is 6.57 x 10²² Hz. To find the energy of the photon we need to use the following formula,
E = hν
where, h = 6.676 x 10⁻³⁴m²kg/s
On substituting the values of Planck's Constant and ν we get,
E = 6.676 x 10⁻³⁴ x 6.57 x 10²²
E = 43.861 x 10⁻¹²J
Therefore, the energy produced by the photon is 43.861 x 10⁻¹²J.
Next, we need to find the wavelength of the photon. The wavelength is found using the following formula,
λ = c/ν
where, c = 3 x 10⁸m/s
By substituting the values of c and ν we get
λ = (3 x 10⁸) / (6.57 x 10²²)
λ = 0.4662 x 10⁻¹⁴ m
Therefore, the wavelength of the photon is 0.4662 x 10⁻¹⁴ m
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Are two atoms of the same element identical?
Answers
Determine the molecular formula of a compound whose molecular mass is 60.00 g/mol and has an empirical formula of ch4n. ch4n c2h5n2 c2h8n2 c3h12n3
Answers
Molecular formula of a compound whose molecular mass is 60.00 g/mol and has an empirical formula of C₂H₈N₂.
We know the empirical formula and thus the molar mass of the empirical formula, we simply need to find out how many of these fit into the molar mass of the molecular formula.
In this problem, we have an empirical formula of CH₄N
so the molar mass is 12 + 4 + 14 = 30 g/mol.
Molecular formula mass/Empirical formula mass=60 g/mol/30 g/mol=2
The molecular formula is TWICE that of the empirical formula.
Molecular formula = 2XCH₄N = C₂H₈N₂
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Answer:
C2H8N2
Explanation:
edge 2023
help please anyone???
Answers
Second answer is C which is 0.38 moles of He
Because;
n=pv/RT
n= 1x8.6/22.4
= 0.38 moles of He
What energy transfer occurs when a solar panel uses sunlight to provide power to a house?
Answers
Radiant energy is converted to electrical energy, when a solar panel uses sunlight to provide power to a house.
What is electrical energy?Electrical energy is produced when electrically charged particles move, producing energy.Electrical energy is a general term that describes energy that has been transformed from electric potential energy.Electric current and electric potential given by an electrical circuit serve as the source of this energy (e.g., provided by an electric power utility).This electric potential energy stops being electric potential energy after it has been changed into another form of energy.Because of this, all electrical energy is potential energy before it is used.Electrical energy can always be referred to as another type of energy once it has been transformed from potential energy (heat, light, motion, etc.).To know more about electrical energy, refer:
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If a reaction reaches the transition state, does this guarantee that it will proceed to products? multiple choice question. it depends on the reaction. yes no
Answers
Because the transition state is unstable, reactant molecules don't stay there long, but quickly proceed to the next step of the chemical reaction.
What are molecules ?According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds. When speaking of polyatomic ions, the distinction between them and ions is frequently ignored in the fields of quantum physics, organic chemistry, and biochemistry.
As our understanding of molecular structure has grown, so has the definition of a molecule. Molecules are the smallest particles of pure chemical substances that nevertheless retain their composition and chemical properties, according to earlier definitions that were less accurate.
The incorruptible quintessence aether, a fifth element, was thought to be the essential component of the heavenly bodies.
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if i have an unknown quantity of CI2 at a pressure of 1.2 atm, a volume of 31 liters and a temperature of 87C, how many moles of CI2 do i have
Answers
Answer:
I think 1.3 moles correct me if I'm wrong
Explanation:
How are the functions of the mouth and stomach similar to each other
Answers
Answer:
they both break down food
Explanation:
Which characteristic cannot be inherited?
A. color of an animal's fur
B. height of a plant
C. knowledge of facts
D. shape of a face
please hurry
Answers
Answer:
the answer is c
what are the reactants in the first word equation above. magnesium+hydrochloric acid ⇒ magnesium chloride + hydrogen
Answers
Answer:
Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g). The reaction is a redox reaction.
Explanation:
Hope it is helpful...
Which of the following statements is correct about air temperature?
Answers
please help me .........
solve it.
Answers
this is the the and*******to you and your team
below given are some example of solution identify solute and solvent from them also mention whether they are solid, liquid and gas . Air,milk,water, pepsi,humid air,sea water, polluted air
Answers
Answer:
Solutes examples are
Air,(gas) humid air (gas), polluted air(gas)
Examples of Solvents are Milk(liquid), water(liquid).,
Pepsi(liquid).
Sea water(liquid)
Explanation:
Solutes are substances that are dissolved and it is present in minute fraction in a solution.
Solvents is the medium that dissolve substances or solutes and it is present in large amount in a solution.
Solutes and solvents for solution.
Solution is formed when substances dissolves in another.
Air: The solvent is nitrogen because it is present in large quantities and the solutes is oxygen because it is present in small quantity.
Pepsi :sugar, caffeine and carbon dioxide as solutes and the solvent is water.
Milk: lactose, some minerals are solutes and Water is the solvent.
Humid air: water is the solutes and gases is the solvent.
Sea water: salt is the solute and water is the solvent.
Polluted air: Air is the solvent and dust particles is the solutes.
If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen?
Answers
please vote me brainliest i really need it for i can do my work
In the first step in the life cycle of a
star, it is called a:
Answers
Brainiest plx
decide whether the lewis structure proposed for each molecule is reasonable or not. nh2
Answers
The Lewis structure proposed for the molecule NH₂ is not reasonable. The reason is that nitrogen (N) has five valence electrons, and hydrogen (H) has one valence electron each. In total, there are four valence electrons in the NH₂ molecule. However, in the proposed Lewis structure, there is no lone pair of electrons on nitrogen, which means it has only three valence electrons surrounding it.
To achieve stability, nitrogen needs to have a complete octet (eight valence electrons) by sharing or gaining electrons. One possible Lewis structure for NH₂ is as follows:
H
|
N
|
H
In this structure, the nitrogen atom shares one electron with each of the two hydrogen atoms, forming two covalent bonds. Additionally, the nitrogen atom has one lone pair of electrons, which provides a total of eight valence electrons around nitrogen, satisfying the octet rule.
Therefore, The Lewis structure proposed for the molecule NH₂ is not reasonable.
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can someone give me facts about Venus, it's for a project
it would help a lot!!
I'm looking for at least 4
Answers
Answer:
A day on Venus is longer than a year. ...
Venus is hotter than Mercury – despite being further away from the Sun. ...
Unlike the other planets in our solar system, Venus spins clockwise on its axis. ...
Venus is the second brightest natural object in the night sky after the Moon.
Venus has a hostile environment. ...
Venus is hellishly hot. ...
Venus has volcanic features. ...
Venus has year-long days. ...
Venus has two sunrises in a year. ...
Venus spins in reverse gear. ...
Venus is showing mysterious life signals.
Explanation:
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A day on Venus is longer than a year. ...
Venus is hotter than Mercury – despite being further away from the Sun. ...
Unlike the other planets in our solar system, Venus spins clockwise on its axis. ...
Venus is the second brightest natural object in the night sky after the Moon.
Venus has a hostile environment
The_____
is an organelle that can give instructions for a
cell to reproduce and send directions to organelles to make needed
materials.
Answers
Answer:
nnmnm
Explanation:
What name is given to the number of protons in a particular atom?
Answers
Explanation:
atomic number
The number of protons in the nucleus of an atom is called its atomic number: the atoms of a particular element all have the same number of protons
Answer:
Atomic number is given to the number of protons in a particular atom.
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The atomic masses of 35^Cl (75.53 percent) and 37^Cl (24.47 percent) are 34.968 and 36.956 amu, respectively. Calculate the average atomic mass of chlorine. The percentages in parentheses denote the relative abundances
Answers
An element can have multiple isotopes. Isotopes correspond to variations of the same element with respect to the number of neutrons in its nucleus. the number they give us, 35 and 37 correspond to the mass number of chlorine. The percentage will be how abundant the element is.
To find the average atomic mass we must multiply the mass of the isotope by its respective percentage of abundance and add these two results.
So, the average atomic mass of Cl will be:
\(AtomicMassCl=34.968amu\times75.53\%+36.956amu\times24.47\%\)\(\begin{gathered} AtomicMassCl=26.411amu+9.043amu \\ AtomicMassCl=35.454amu \end{gathered}\)Answer: the average atomic mass of chlorine is 35.454 amu
A) 4520 kj
B) 1794 kj
C) 800 kj
D) 2200 kj
Answers
Answer:
D.) 2,200 kJ
Explanation:
To find the energy needed to vaporize aluminum, you need to multiply the given mass (2 kg) by the latent heat of vaporization conversion (via table). You know your answer is correct if the units cancel out.
2 kg aluminum 1,100 kJ
------------------------- x ------------------------ = 2,200 kJ
1 kg aluminum
**I apologize if there was another way using the equation **
Answer the following questions.
P1) Matching.
Complete the table with the data from the lab. First, calculate and enter the mole ratio in the chart, then enter the volumes of the precipitates.
Answers
The mole ratio can be seen below and the volume of each precipitate is 60 mL.
A mole ratio refers to a conversion factor that compares the quantities of two chemicals in moles in a chemical laboratory experiment.
Mole ratio For 1:
= 10 mL : 50 mL= 1 : 5 mLMole ratio For 2:
15 mL : 45 mL= 1 : 3 mLMole ratio For 3:
20 mL : 40 mL1 : 2 mLMole ratio For 4:
30 mL : 30 mL1 mL : 1 mLMole ratio For 5:
40 mL : 20 mL2 : 1 mLMole ratio For 6:
45 mL : 15 mL3 : 1 mLMole ratio For 7:
50 mL : 10 mL5 : 1 mLSince the parameters from the left side of the diagram are not shown, we will assume that the volumes for each precipitate are the addition of both volumes in each column.
By doing so, we have:
1.
(10 +50) mL = 60 mL2.
(15 + 45) mL = 60 mL3.
(20 + 40)mL = 60 mL4.
(30 + 30) mL = 60 mL5.
(40 + 20)mL = 60 mL6.
(45 + 15) mL = 60 mL7.
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which of the following is a physical property of the salt crystals shown here?
A.they are gas
B.they cannot burn
c.they are a liquid
D. they are clear white
Answers
Answer:
As the explanation i think the answer is D
Explanation:
Transparent and colourless in crystalline form – rather like ice. Crystallises in the isometric system, usually in the form of cubes. Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°). Slightly soluble in alcohol, but insoluble in concentrated hydrochloric acid.Physical properties: Sodium chloride is a white crystalline solid with a density of 2.16 g/mL, and a melting point of 801 °C. It is also available as aqueous solutions of different concentrations, called saline solutions. Chemical properties: Sodium chloride is readily soluble in water and other polar solvents.
Which of the following has the highest pH?
Multiple choice question.
A)
pure water
B)
vinegar
C)
ammonia
D)
vitamin C
Answers
Answer:
C Ammonia
Pure water is neutral, so pH is about 7
Vinegar is acidic, pH is around 2-3
Ammonia is alkaline, pH around 11.6
Vitamin C is also acidic, pH is around 3.5 to 6
As pH increases with how alkaline the substance is, substances with a lower pH is more acidic, while substances with a higher pH is more alkaline
the question is asking for the highest pH, so you should choose the most alkaline substance
therefore the ans is C, which is ammonia
A dune buggy winds over sand dunes in the desert, going a distance of 1500 meters in 180 seconds. What is the average speed, in meters per second rounded to the nearest hundredth, of the dune buggy?
Answers
Answer:
8.33 meters per second
Explanation:
1500 meters/180 seconds=1500/180=8.3333 meters per second
The half-life of C-14 is 5,730 years. How much of a 50.0-gram sample of C-14 will remain after 28,650 years?
Answers
Answer:
1.5625
Explanation:
the half life of an isotope is the amount of time it takes for one half of the isotope to decay
28650 is 5 half lives (28650÷5730=5)
after one half life the mass will be 25 grams
after two half lives the mass will be 12.5 grams
after 3 half lives the mass will be 6.25 grams
after 4 half lives the mass will be 3.125 grams
after 5 half lives the mass will be 1.5625 grams
Please answer the full thing I will mark brianliest <3
1. Balance the following equation and use calculations for average atomic masses to show that both sides of the equation have equal masses. This style of problem was covered in Live Lesson. Show your work. (4 pts)
Mg(OH)2(aq) + HCl(aq) MgCl2(s) + H2O(l)
2. Use Avogadro’s number to determine the number of particles found in 20.0 g of NaCl. Show your work. (3 pts)
3. In a thermite reaction, aluminum powder undergoes a redox reaction with rust. If 55.0 g of aluminum reacts completely, what mass of iron is formed? Start by balancing the equation. Show your work. (3 pts)
Al + Fe2O3 Fe + Al2O3
Answers
Answer:
That is the correct explaination for your question
What is the best electrode for salt water battery which will not
corrode easily?
Answers
The best electrode for saltwater batteries that will not corrode easily is copper and zinc.
The values of half-cell potentials are used to make the electrodes that do not corrode easily. If the salt concentrations at the two electrodes were different, you could still get voltage and current from a cell even if the anode and cathode were formed of the same metal.
Due to its high efficiency and suitability for seawater, copper is frequently employed as the cathode in galvanic cells. Additionally, in a seawater battery, zinc and aluminum can function as inert anodes and produce large levels of electricity.
A liquid saltwater solution is used in saltwater batteries to collect, store, and finally release energy. Copper and zinc are frequently utilized as the cathode in galvanic cells due to their high efficiency and suitability for seawater.
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Uhm how to do this? I need answers to this please
Answers
Answer:
Hi - First you need to determine whether there is a metal or no and from there there are certain rules in order to name the compound. Here is a flowchart to try and help.
