which pair of substances is capable of forming a buffer in aqueous solution? group of answer choices hcl, nacl h2co3, nano2 hno3, nano3 ch3cooh, ch3coona h3po4, na3po3
Answers
The pair of substances that is capable of forming a buffer in an aqueous solution are CH3COOH and CH3COONa.
The pairs CH3COOH (acetic acid) and CH3COONa (sodium acetate) are capable of forming a buffer in an aqueous solution because this combination consists of a weak acid and its conjugate base, which is necessary to create a buffer system that can resist changes in pH when small amounts of acid or base are added.
CH3COOH ⇄ CH3COO- + H+
weak acid
CH3COONa → CH3COO- + Na+
conjugate base
When small amounts of acid or base are added, it resists changes in pH.
CH3COO- + H+ (acid) ⇄ CH3COOH
CH3COO- + OH- (base) ⇄ CH3COO- + H2O
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Related Questions
To what final volume in L should 380mL of a 0.47M solution be diluted if you want a final concentration of 0.094M?
Answers
ANSWER
The final volume of the solution is 1900mL
EXPLANATION
Given information
The initial volume is 380mL
The initial concentration is 0.47M
The final concentration is 0.094M
To find the final volume of the solution, follow the steps below
Step 1: Write the dilution formula
\(\begin{gathered} \text{ C1V1 = C2V2} \\ \text{ Where} \\ \text{ C1 = initial concentration} \\ V1\text{ = Final volume} \\ \text{ C2 = initial concentration} \\ \text{ V2 = Final concentration} \end{gathered}\)Step 1: Substitute the given data into the formula in step 1
Let the final volume be V2
\(\begin{gathered} \text{ 0.47 }\times\text{ 380 = 0.094}\times V2 \\ 178.6\text{ = 0.094}\times\text{ V2} \\ \text{ Divide both sides by 0.094} \\ \text{ }\frac{178.6}{0.094}\text{ = }\frac{0.094\times V2}{0.094} \\ \text{ V2 = 1900mL} \end{gathered}\)Hence, the final volume of the solution is 1900mL
You have 1,000 cubic meters of water and are trying to find a container large enough to hold it. Which of the following scale models would indicate that the container the model represents would hold all of your water, if in each model the scale is 1 inch = 1 meter?
Answers
The scale model that would indicate a container large enough to hold 1,000 cubic meters of water if the scale is 1 inch = 1 meter is a model that has a volume of 1,000 cubic inches.
To determine this, we first need to convert cubic meters to cubic inches, as the scale for each model is given in inches.
1 meter = 39.37 inches,
so 1 cubic meter = (39.37 inches)³ = 61,023.7 cubic inches.
Therefore,
1,000 cubic meters = 1,000 x 61,023.7 = 61,023,700 cubic inches
Since the scale is 1 inch = 1 meter, we can use the volume formula for a rectangular prism, which is length x width x height, to determine the volume of the container represented by each model.
For example, if a model has dimensions 10 inches x 10 inches x 10 inches, its volume would be 10 x 10 x 10 = 1,000 cubic inches. We would then need a container that has 61,023,700 / 1,000 = 61,023.7 of these models, or one model that has a volume of 61,023,700 cubic inches.
As a result, if the scale is 1 inch = 1 metre, the scale model that would suggest a container large enough to store 1,000 cubic metres of water has a volume of 61,023,700 cubic inches.
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Which cell lacks a nucleus
Answers
Answer:life
Explanation:
because we act like we have no cells
The properties of a rectangular prism are listed below: Mass = 120 g Length = 3 cm Width = 2 cm Height = 1 cm What is the density of the rectangular prism? A.10 g/cm3 B.20 g/cm3 C.360 g/cm3 D.720 g/cm3
Answers
B) 20g/cm³
Explanation:Hi there !
density formula
d = m/V
volume formula
V = l×w×h
V = 3cm×2cm×1cm = 6cm³
d = 120g/6cm³
d = 20g/cm³
Good luck !
Answer:
20g
Explanation:
Write the balanced equation for the rusting of iron in which iron reacts with oxygen to form iron(III) oxide. Phases are optional.
Answers
Answer:
1.) First thing to recognize is that it requires you to know the molecular formula for Iron(III) Oxide, which is Fe2O3. If you don't know this formula in all textbooks there is a page that has it and other compounds listed. I would encourage you to review this page and memorize the other compounds as these compounds will come up in future questions.
2.) Now we will write an unbalanced equation, keeping in mind that molecular oxygen( O2) is used:
Fe + O2 ==> Fe2O3
3.) In balancing problems, I like to always start with Oxygen. Because there are 2 oxygen atoms on the reactant side and three on the product side and we know that both of these numbers go into 6, we will use this to balance the oxygen. We will put a e in front of the molecular Oxygen and a 2 in front of the iron(III) oxide. This will balance the oxygens.
Fe + 3O2 ==> 2Fe2O3
However, notice now that the iron is still out of balance, This can be easily solved by having a 4 in front of the iron. Now everything is balanced!
4Fe + 3O2 ==> 2Fe2O3
Explanation:
This is due tomorrow and my teacher thinks I did it but really I have no idea and I’m too lazy to try and look up answers
Answers
Name - Function
A. Brainstem Control center, regulates vital functions such as breathing, heart rate, and blood pressure.B. Cerebrum Higher processes such as thought, memory, and emotion.C. Cerebellum Physical coordination and balance.What does the brain control?The brain regulates a variety of bodily processes, such as movement, sensation, thinking, emotion, and behavior.
Activity and Part of the brain it involves are:
a. Testing a hamburger - Sensory cortex in the parietal lobe
b. Artistic ability - Right hemisphere of the cerebrum
c. Kicking a soccer ball - Motor cortex in the frontal lobe
d. Rate of breathing - Medulla oblongata in the brainstem
e. Tying your shoes - Cerebellum
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Methane versus carbon dioxide are very important greenhouse gases. However, methane can retain and release about ____ times more heat than carbon dioxide.
Answers
The blank space in the task statement should be filled with 25 as methane can retain 25 times more heat than carbon dioxide.
Heat Retention: Methane and Carbon dioxideMethane, carbon dioxide amongst other gases are important greenhouse gases which allows the Earth retain it's heat in order for it to be habitable.
Methane can retain and release about 25 times more heat than Carbon Dioxide although Methane emissions are lower compared to Carbon Dioxide.
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what products would result from the complete hydrolysis of gly-ala-ser? give your answers in the alphabetic order, separate them with commas.
Answers
The complete hydrolysis of gay-ala-ser would result in the following products in alphabetical order: alanine, glycine, and serine. Hydrolysis is a chemical reaction in which a compound is broken down into smaller molecules through the addition of water.
The case of gay-ala-ser, the peptide bond between glycine and alanine would be broken, followed by the bond between alanine and serine. This would result in the formation of the individual amino acids glycine, alanine, and serine. The order in which the products are listed is based on their alphabetical order. Therefore, the products would be alanine, glycine, and serine. It is important to note that the order in which the products are listed does not indicate the order in which they were produced during the hydrolysis reaction. The complete hydrolysis of the tripeptide Gly-Ala-Ser glycine-alanine-serine would result in the following individual amino acids: alanine, glycine, serine. These amino acids are already listed in alphabetic order and separated by commas, as per your request.
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Match up the characteristics below with the type of molecular bond they describe. Bonds found in Halite (between Na+ and Cl-) Bonds found between Si and O in the Si-O tetrahedron Bonds inside the water molecule (between the H and O ) Bonds that exist between two water molecules Strongest bond type Weakest bond type Bonds that are used by water to dissolve sal
Answers
The characteristics and the type of molecular bond they describe:
1. Bonds found in Halite (between Na⁺ and Cl⁻): Ionic bond
2. Bonds found between Si and O in the Si-O tetrahedron: Covalent bond
3. Bonds inside the water molecule (between the H and O): Covalent bond
4. Bonds that exist between two water molecules: Hydrogen bond
5. Strongest bond type: Covalent bond
6. Weakest bond type: Van der Waals bond
7. Bonds that are used by water to dissolve salt: Ionic bond
The ionic bond is a type of molecular bond found in halite (between Na⁺ and Cl⁻). The Si-O tetrahedron is held together by a covalent bond. The bond inside the water molecule (between the H and O) is also a covalent bond. The hydrogen bond is the type of bond that exists between two water molecules. The covalent bond is the strongest bond type, while the van der Waals bond is the weakest bond type. Water uses the ionic bond to dissolve the salt.
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Is the colorless gas hydrogen reacts explosively when ignited in air a physical or chemical property?
Answers
The fact that the colorless gas hydrogen reacts explosively when ignited in air is a chemical property. A chemical property is a characteristic of a substance that describes its ability to undergo a chemical change or reaction. In this case, hydrogen reacts with oxygen in the air to form water vapor, which is accompanied by an explosive release of energy.
When hydrogen is ignited, the chemical reaction between hydrogen and oxygen takes place, resulting in the formation of water vapor. This reaction is known as combustion. The release of energy in the form of an explosion is a clear indication of a chemical change occurring. Physical properties, on the other hand, describe the characteristics of a substance that can be observed without changing the chemical composition of the substance.
In summary, the ability of hydrogen to react explosively when ignited in air is a chemical property, as it involves a chemical change and the formation of a new substance (water vapor).
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Mohammad observed that his water boiled much more quickly than his isopropyl alcohol. His peer group suggested some experimental error that may caused this to happen. Which 2 experimental errors most likely caused the invalid data a. He could have mixed up the labels on the containers b. The heating vessel or hot plate was not at the same temperature c. His procedure was correct but tested a type of water that boils more quickly than isopropyl alcohol d. The boiling vessel might have been dirty so the solutions got mixed
Answers
Answer:
Mohammad observed that his water boiled much more quickly than his isopropyl alcohol. His peer group suggested some experimental error that may caused this to happen. Which 2 experimental errors most likely caused the invalid data a. He could have mixed up the labels on the containers b. The heating vessel or hot plate was not at the same temperature c. His procedure was correct but tested a type of water that boils more quickly than isopropyl alcohol d. The boiling vessel might have been dirty so the solutions got mixed
Explanation:
How many atoms of each element are in the chemical formula Ca(OH)2?
Answers
A fundamental equation of thermodynamics, the Gibbs-Helmholtz equation, is a linear equation that relates free energy change, AG, to absolute temperature, T. The equation is AG = AH -TAS, where AH is enthalpy change and AS is entropy change. Using the above equation, find AG at 400 K for a reaction in which AH = 61.0 kcal and AS = 0.020 kcal/K. 7. A cost equation is known to be y = 10x + 250, where x is the number of units produced and y is the cost in $. Find the total cost of producing 5 000 units. Round your answer to four significant digits (SD).
Answers
At 400 K, the free energy change (ΔG) for the reaction is 53.0 kcal. The total cost of producing 5,000 units is $50,250.
To find ΔG at 400 K using the Gibbs-Helmholtz equation, we need to substitute the given values of ΔH and ΔS into the equation.
ΔG = ΔH - TΔS
Given;
ΔH = 61.0 kcal
ΔS = 0.020 kcal/K
T = 400 K
Substituting these values into the equation;
ΔG = 61.0 kcal - (400 K)(0.020 kcal/K)
ΔG = 61.0 kcal - 8.0 kcal
ΔG = 53.0 kcal
Therefore, at 400 K, the free energy change (ΔG) for the reaction is 53.0 kcal.
To find the total cost of producing 5,000 units using the cost equation y = 10x + 250, we need to substitute x = 5,000 into the equation.
y = 10x + 250
Given;
x = 5,000
Substituting x = 5,000 into the equation:
y = 10(5,000) + 250
y = 50,000 + 250
y = 50,250
Therefore, the total cost of producing 5,000 units is $50,250.
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examples of physical properties.
Answers
Answer: Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter observed.
Explanation:
1. Swimming pool manufacturers recommend maintaining the
pool chlorine concentration at 3.0 ppm. What is the mass of
chlorine in a pool containing 3.4 x 106 L of water? ™
Answers
A 3.4 × 10⁶ L swimming pool must have a mass of 1.0 × 10⁷ mg Cl₂ to maintain a concentration of 3.0 ppm.
What is "ppm"?"ppm" of "parts per million" is a unit of concentration equivalent to milligrams of solute per liters of solution.
A pool must maintain a chlorine concentration of 3.0 ppm (3.0 mg/L). The mass of chlorine in 3.4 × 10⁶ L is:
3.0 mg Cl₂/L × 3.4 × 10⁶ L = 1.0 × 10⁷ mg Cl₂
A 3.4 × 10⁶ L swimming pool must have a mass of 1.0 × 10⁷ mg Cl₂ to maintain a concentration of 3.0 ppm.
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THREE QUESTIONS ANSWER TWO Question 1 a) Determine the pulse duration of a periodic pulse train whose duty cycle is \( 15 \% \) and period is 115 nanoseconds.
Answers
The pulse duration of periodic pulse train with a duty cycle of 15% and a period of 115 nanoseconds is 17.25 nanoseconds.
Duty cycle = 15% or 0.15
Time period = 115 nanoseconds
The ratio of the amount of time the signal spends in the "on" state to its overall duration is known as the duty cycle. The signal is on for 15% of the entire period when the duty cycle is given as 15% in this instance. Duty cycles are a term used to represent the percentage of time that an electrical signal is active in a device, such as the power switch in a switching power supply, or when an organism, like a neuron, fires an action potential.
Calculating the duty cycle and the period of the pulse train -
Pulse duration = Duty cycle x Period
= 0.15 x 115
= 17.25
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Calculate the average rate of reaction for the generation of product in M/s from 0 to
250 sec.
Answers
The average rate of reaction for the generation of product is 0.0004 mol/L*s
What is the rate of the reaction?The average rate of reaction can be calculated using the formula:
Average rate = (change in concentration of product) / (time taken)
In this case, the change in concentration of product is:
0.1 mol/L - 0 mol/L = 0.1 mol/L
The time taken is:
250 sec - 0 sec = 250 sec
Therefore, the average rate of reaction is:
Average rate = 0.1 mol/L / 250 sec
Average rate = 0.0004 mol/L*s
The units are in mol/L*s, which represents the rate of product formation per unit time.
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Explain the role of indicator paper in testing for pH level. If you had ot choose two foods or everyday substances to be able to clearly test indicator paper which would it be. Discuss the importance of measuring acidity level to protect against botulism. Explain the connection between acidity level and botulism. Expalin why salsa may be susceptible to containing the type of bacteria that causes botulism. When calibrating equipment that measures pH level, explain how you would choose which substances to use as buffers. Explain why it is importance to carefully rinse off your calibration meter between exposing it to the two substances that you using to calibrate your meter.
Answers
Indicator paper is used to determine the pH level of a substance. It contains chemicals that change color in response to different pH levels.
By comparing the color change to a reference chart, one can determine the acidity or alkalinity of a solution.
To clearly test indicator paper, two suitable substances would be lemon juice and baking soda. Lemon juice is acidic, so it would cause the indicator paper to change color in the acidic range. Baking soda, on the other hand, is alkaline, resulting in a color change in the alkaline range.
Measuring acidity level is crucial to protect against botulism because the bacteria that causes botulism, Clostridium botulinum, thrives in low-acid environments. By measuring the acidity level, we can ensure that the pH is below 4.6, which inhibits the growth of the bacteria and prevents toxin production.
Salsa may be susceptible to containing the type of bacteria that causes botulism because it often contains low-acid ingredients like onions, peppers, and garlic. If not properly preserved or stored, these ingredients can create an environment favorable for the growth of Clostridium botulinum.
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What is the molar mass of Ca(NO3)2?
a 102.2 g/mol
b 134.1 g/mol
c O 164.1 g/mol
d 0 204.2 g/mol
Answers
Answer:
C.164.1g/mol
Explanation:
40+14×2+16×6
164
The molar mass of Ca(NO3)2 is 164.1 g/mol.
What is Calcium nitrate?
Calcium nitrate, also called Norgessalpeter (Norwegian salpeter), is an inorganic compound with the formula Ca(NO3)2(H2O)x. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts. Calcium nitrate is mainly used as a component in fertilizers, but it has other applications. Nitrocalcite is the name for a mineral which is a hydrated calcium nitrate that forms as an efflorescence where manure contacts concrete or limestone in a dry environment as in stables or caverns. A variety of related salts are known including calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate.
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How many grams of HCl are needed to form 34.5 grams of Cl2?
Answers
Answer:
Expof HCl are required to produce 7.50 moles of ZnCl2? 6. Copper ... When 9.34 g of zinc react with excess hydrochloric acid how many grams of zinc chloride will.lanation:
which of the following properties of water are physical properties? select all that apply. multiple select question. electrolysis of water produces both hydrogen gas and oxygen gas. water exists as a liquid at 25oc. the boiling point of water is 373.15 k. water combines with carbon dioxide to make carbonic acid. water has a density of 1.00 g/ml.
Answers
The ones that are physical properties of water are:
Water exists as a liquid at 25°C.The boiling point of water is 373.15 K.Water has a density of 1.00 g/ml.All substances that exist in the universe have chemical properties and physical properties. Chemical properties are the properties that are able to be observed or measured only when the substance is undergoing a chemical change or chemical reaction. These properties are connected to the chemical bonds that a substance has. Some examples of chemical properties are flammability, toxicity, and radioactivity.
Physical properties are properties that are able to be observed without changing the identity or chemical composition of the substance. In another way, these properties can be observed without testing the substance under chemical change. Some examples of physical properties are boiling point, shape, color, odor, and texture.
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HELP ME IT'S FOR CHEMISTRY!!!! I NEED HELP 15pts
Answers
Answer:
Answers explained below in detail.
Explanation:
In general, notice how they show you how to find the current state of matter (phase) for CO2. That line shows that at the intersection of the temperature and pressure (think of it as a coordinate of (T, P)), it is resting on the line between solid and gas.
For question 1, it asks us to first examine what phase the CO2 would be at a certain pressure and temperature. Basically, just plot the coordinate. It is at -100 C, and 1 atm pressure. A file is attached for what this looks like. Where those two data points intersect is the current phase. That would be the solid phase at -100 C and 1 atm pressure. That's actually what dry ice is, solid CO2 :). Then, we go to room temperature. We now find the coordinate at the same pressure, but at room temperature, which is about 68 F, or 20 C. That point is also shown in the file. Notice that the intersection point is in the gas phase now. Going from a solid to a gas directly is called sublimation. That is what that smoke is that dry ice produces, essentially.
Unfortunately, since you didn't provide a phase diagram for water, you'll have to try the rest yourself.
For 5, though, the critical point is the point that ends the graph, shown in the file as well. Hope this helps.
BRO THIS IS THE 3RD TIME IVE PUT THIS UP CAN SOMEONE HELP NO LINKS OR TROLLS
Answers
Answer:
1) AgNO3 (aq) + KCl (aq) -> AgCl (s) + KNO3 (aq)
Ag+ (aq) + NO3- (aq) + K+ (aq) + Cl- (aq) -> AgCl (s) + K+
(aq) + Cl- (aq)
Ag+ (aq) + Cl- (aq) -> AgCl (s)
2) 2NaCl (aq) + K2CO3 (aq) -> Na2CO3 (aq) + 2KCl (aq)
3) Fe(NO3)3 (aq) + 3NaOH (aq) -> Fe(OH)3 (s) + 3NaNO3
(aq)
Fe³+ (aq) + 3NO3- (aq) + 3Na+ (aq) + 3OH- (aq) ->
Fe(OH)3 (s) + 3Na+ (aq) + 3NO3- (aq)
Fe³+ (aq) + 3OH- (aq) -> Fe(OH)3 (s)
4) BaBr2 (aq) + Na2SO4 (aq) -> BaSO4 (s) + 2NaBr (aq)
Ba²+ (aq) + 2Br- (aq) + 2Na+ (aq) + SO4²- (aq) ->
BaSO4 (s) + 2Na+ (aq) + 2Br- (aq)
Ba²+ (aq) + SO4²- (aq) -> BaSO4 (s)
Explanation:
Sorry, I couldn't make the charges superscript. Don't know how.
On #2, no reaction occurs; everything stays aqueous.
the chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
Answers
The chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
\(Sucrose + H_{2} O -- > glucose + fructose\)
What is chemical reaction?
In this equation, sucrose and water are the reactants, and glucose and fructose are the products. During the reaction, some of the bonds in sucrose and water are broken and new bonds are formed, resulting in products with chemical properties that are very different from those of the reactants.When molecules in a reactant undergo a chemical reaction, their bonds are broken, and molecules in the product undergo a similar process, new bonds are created, creating a new substance.We are surrounded by chemical processes on a daily basis, whether it be in our bodies as they process food or in the sun as they produce the light we see. Prior to starting with chemical reactions, it's crucial to understand physical and chemical changes.The finest illustration of a physical and chemical transformation is a burning candle. You should light a candle. The candle turns into wax as time goes on, as is evident. The candle will go out if it is covered with a jar.However, A chemical change occurs while the candle burns in the demonstration.
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Researchers are studying a fish population in a small pond that has algae as the only producer in the ecosystem. The scientists are concerned about what might happen to the fish, if the algae suddenly disappear. Why is this a concern? What might be done to prevent this from occurring?
Answers
Explanation:
Algae is a group of a photosynthetic eukaryotic organisms that plays a very important role on the ecosystem. It forms the lower base of the food chain and supports all the life forms of the ecosystem. It takes up water and carbon dioxide from the atmosphere to prepare food during the process of photosynthesis and maintains a balance in the ecosystem.
In the context, if the algae disappears, the fish might die as the small fishes feeds on this algae. This is a concern as the algae is main component of food source and forms the base of the food chain. If there will be no algae there will be no life form on earth, as all species depend on each other to survive.
In order to prevent this from occurring, we must protect our algae. We must plant more trees, keep our water bodies healthy, we should not litter our ponds and lakes. We should also help these algae to grow and survive so that other life forms can feed them and thus maintain the ecosystem.
if gasoline with a density of of 0.7 g/mL is poured into water with a density of 1.0 g/mL what will happen
Answers
Answer: It will remain on top the water.
Explanation: Gasoline's density is lower than that of water, so it will be pushed to the top.
A sanitation engineer in Portland, Maine sends a water sample to your lab, and wants to know if there are lactose-fermenting microbes in the sample (their presence would indicate contamination with human waste). How might you determine if these microbes are present or not from this mixed-microbe specimen?
Answers
Answer:
See the answer below
Explanation:
The first thing would be to isolate the bacteria in the water sample using appropriate isolation methods. After obtaining a pure culture of each isolate, a lactose broth fermentation test is then used to check for the isolates that are able to ferment lactose.
A sterile lactose broth containing an indicator (preferably, phenol red) is placed in different sterile test tubes and the pure culture of each isolate is aseptically introduced into each test tube. The test tubes are then incubated for 18 to 24 hours at 35 to 37 \(^oC\).
A change in the color of the indicator from red to yellow will give an indication of lactose fermentation by the organisms.
The solubility of Ca(OH)2 is measured and found to be 0.953 g/L. Use this information to calculate a Ksp value for calcium hydroxide. Ksp =
Answers
The solubility of Ca(OH)2 is 0.953 g/L. The Ksp value can be determined by raising the concentrations of the calcium and hydroxide ions to the power of their stoichiometric coefficients and multiplying them together.
1. The solubility product constant (Ksp) represents the equilibrium constant for the dissociation of a sparingly soluble salt in water. For calcium hydroxide (Ca(OH)2), it dissociates into one calcium ion (Ca2+) and two hydroxide ions (OH-) in an aqueous solution, according to the balanced equation:
Ca(OH)2(s) ⇌ Ca2+(aq) + 2OH-(aq)
2. To calculate the Ksp value, we need to determine the concentration of the dissolved ions. Since the solubility of Ca(OH)2 is given as 0.953 g/L, we can convert this value to moles per liter using the molar mass of Ca(OH)2, which is approximately 74.093 g/mol.
3. Converting the solubility to moles gives:
0.953 g/L / 74.093 g/mol = 0.01287 mol/L
4. Since Ca(OH)2 dissociates into one Ca2+ ion and two OH- ions, the concentration of Ca2+ is equal to 0.01287 mol/L, and the concentration of OH- is equal to 2 * 0.01287 mol/L = 0.02574 mol/L.
5. To calculate the Ksp value, we multiply the concentrations of the ions raised to the power of their stoichiometric coefficients:
Ksp = [Ca2+][OH-]^2
= (0.01287 mol/L) * (0.02574 mol/L)^2
6. Calculating this expression yields the Ksp value for calcium hydroxide.
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What was one main point of Dalton’s atomic theory
Answers
Answer:
Everything is composed of atoms! which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass.
Explanation:
Hope this helped
Answer:
John Dalton in 1808 put forward a theory known as Dalton's atomic theory. The main points of this theory are 1)Matter is made up of extremely small indivisible particles called atoms. 2) Atoms of the same element are identical in all respect i.e. shape, size, and mass.... 8)An atom can neither be created nor destroyed.
Explanation:
What is the mass of 1.55 x 10^24 molecules of chlorine?
Answers
Explanation:
Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.