an aqueous solution is made with the salt obtained from combining the weak acid acetic acid, ch3co2h, and the weak base methylamine, ch2nh2. is the solution acidic, basic, or neutral? ka
Answers
An aqueous solution is made with the salt obtained from combining the weak acid acetic acid, CH₃Co₂H, and the weak base methylamine, CH₂NH₂. The solution is basic.
The combination of CH₃Co₂H and CH₂NH₂ results in the formation of the salt CH₃Co₂CH₂NH₃. This salt is derived from a weak acid and a weak base, and therefore it can undergo hydrolysis in water, leading to the formation of acidic or basic solutions. In this case, CH₂NH₂ is the stronger base compared to CH₃Co₂H, so the solution will be basic.
This is because the CH₂NH₃⁺ ion will react with water to form hydroxide ions (OH⁻), increasing the pH of the solution. The pH of the solution will depend on the strengths of the acid and base, as well as the initial concentration of the salt. The dissociation constant, Ka, of acetic acid can also provide information about the strength of the acid and the resulting pH of the solution.
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Related Questions
What type of reaction is illustrated?
C + 2F2 → CF4
Answers
Answer:
Synthesis Reaction
Explanation:
An synthesis reaction is one in which two or more atoms/molecules react to create a different molecule. These reactions follow the general structure: A + B --> AB.
More specifically, this is an addition reaction. An addition reaction occurs when two or more atoms/molecules combine to create a larger molecule. In this case, carbon and fluorine react to form carbon tetrafluoride, a larger molecule consisting of all the reactants.
This is not a decomposition reaction because these reactions involve a molecule breaking down into atoms or simpler molecules. These reactions follow the general structure: AB --> A + B.
This is not a single-replacement reaction because these reactions involve atoms replacing atoms of a different element in a compound. These reactions follow the general structure: A + BX --> B + AX.
what is biomolecules
Answers
Analysis of a compound containing chlorine and lead reveals that the compound is 59.37% lead. The molar mass of the compound is 349.0 g/n. What is the empirical formula and the molecular formula of this compound?
Answers
The empirical of the compound would be \(Pb_4Cl\)
Empirical formulasThe compound contains chlorine and lead according to the following percentages:
Pb = 59.37
Cl = 100 - 59.37 = 40.63
Converting the percentages to moles:
Pb = 59.37/207.2 = 0.29 mol
Cl = 40.63/35.5 = 1.14 mol
Dividing by the smallest:
Cl = 0.29/0.29 = 1
Pb = 1.14/0.29 = 4
Empirical formula = \(Pb_4Cl\)
In other words, the empirical formula is \(Pb_4Cl\).
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what percentage of electricity comes from fossil fuels
Answers
Answer:
84%
Explanation:
Fossil Fuels Supply 84 Percent Of Worlds Electricity
Which element can combine to form ionic bonds?
a. H and CIa
b. H and N
c. S and Sr
d. Xe and F​
Answers
Among the given elements, S and Sr forms ionic compound. Sr metal donate electron to sulfur forming ionic compound.
What are ionic compounds?Ionic compounds are formed between metals and non metals. The metals are electropositive elements. They easily loss electrons in chemical bonding.
Strontium is an alkaline earth metal with two valence electrons. Strontium forms ionic compounds with non-metals by donating its two valence electrons.
Sulfur needs two more electrons to achieve octet. Hence, it easily gain two electrons from strontium metal forming the ionic compound SrS.
Hence, option c is correct.
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How does changing the substrate concentration compare to changing the enzyme concentration in this experiment?
Answers
In this experiment, both the substrate concentration and varying the enzyme concentration would have an impact on the enzyme activity, although at different rates.
Concentration of the enzyme: If there is a substrate available for the enzyme to bind to, then increasing the enzyme concentration will speed up the reaction. When all of the substrate has been incorporated, the reaction will no longer accelerate because there won't be any more substrate for new enzymes to attach to. Specifically, enzymes. Normally, just one or a few substrates can trigger an enzyme's reaction. Only one type of substrate will be accepted by some enzymes, which are more selective than others. Other enzymes can interact with a variety of molecules as long as they possess the chemical group or type of bond that the enzyme is looking for.
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How can you determine an atom's atomic mass?
Answers
Answer: I think you're supposed to add the protons and neutrons and then that's your answer. Sorry if I'm wrong :/
Explanation:
Tell me what you think in galaxies do aliens exist tell me why and your view
Step by step
Answers
Answer:
I do not know. I think there is .as we are the living creatures in this earth. maybe aliens are creatures of other planet or galaxies. I am not scientists to prove it.sorry.
complete the following neutralization reaction. only include coefficients greater than 1. provide your answer below: koh -> kno3
Answers
The balanced equation for this reaction, including coefficients greater than 1, is as follows:
2 KOH + 2 HNO₃ → 2 KNO₃ + 2 H₂O
In this equation, we balance the atoms on both sides by adjusting the coefficients. Each side of the equation now has two potassium (K) atoms, two nitrates (NO₃) ions, and two hydroxides (OH) ions. The coefficients indicate the stoichiometric ratio between the reactants and products.
The reaction proceeds by the KOH, a strong base, reacting with HNO₃, a strong acid, to form KNO₃, a salt, and water (H₂O). The potassium ions (K⁺) from KOH combine with the nitrate ions (NO₃⁻) from HNO₃ to produce KNO₃, while the hydroxide ions (OH⁻) from KOH combine with hydrogen ions (H⁺) from HNO₃ to form water.
Overall, this balanced neutralization equation demonstrates the stoichiometry of the reaction, indicating that for every two moles of KOH and HNO₃, two moles of KNO₃ and two moles of H₂O are produced.
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A box of paperclips contains 2.21x10 24 atoms of aluminum. How many moles are in the box of paperclips? I am starting with the unit _______________ and solving for the unit ________________
Answers
Taking into account the definition of Avogadro's Number, a box of paperclips contains 2.21×10²⁴ atoms of aluminum and 3.67 moles of aluminum.
Definition of Avogadro's NumberAvogadro's number is a number that defines the amount of elements (which can be electrons, atoms, ions, molecules) found in one mole of a substance.
Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Amount of moles in the box of paperclipsThen you can apply the following rule of three: if 6.023×10²³ atoms are contained in 1 mole of aluminum, then 2.21×10²⁴ atoms are contained in how many moles of aluminum?
amount of moles of aluminum= (2.21×10²⁴ atoms × 1 mole)÷ 6.023×10²³ atoms
amount of moles of aluminum= 3.67 moles
Finally, 3.67 moles of aluminum are present.
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If an eletric dicharge produce 300L of ozone(O3), how many liter of oxygen(o2) are required?
Answers
If an electric discharge produce 300 L of ozone(O₃), the liter of oxygen(O₂) are required is 450 L.
The reaction is as follows :
3O₂ ---> 2O₃
The volume of the Ozone = 300 L
The mole ratio is given as :
3 moles of the oxygen that is O₂ will produce the 2 moles of the ozone that is O₃.
The number of the moles is as follows :
The number of moles = mass / molar mass
The 300 L of the ozone will required the oxygen is as :
To produce 300 L of ozone = ( 3/2 ) × 300 L of the oxygen required
= 1.5 × 300 L
= 450 L
Thus, the 450 L of the oxygen is required to produce the 300 mL of the ozone .
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What is the ratio of sodium ion to phosphate ion
in the formula Na3PO4?
Answers
Answer:
42,07%and 18,90%
Explanation:
Peanut butter is
A.Element
B.Compound
C.Homogeneous mixture
D.Heterogeneous mixture
Answers
It is homogenous because it consists of many different ingredients including; sugar, salt, vegetable oil, and roasted peanuts.
Peanut butter is a homogenous mixture, because it is made up of many ingredients Therefore, option C is correct.
What do you mean by homogenous mixture ?A mixture is called as homogenous if its constitution is constant throughout. Because the dissolved salt is uniformly spread across the whole salt water sample, the salt water depicted above is homogenous.
Most commonly, homogenous refers to having the same pieces or components throughout. A homogenous mixture has a consistent feature or attribute throughout.
The term "homogenous" can also refer to a group of items that are fundamentally the same or of the same sort.
It is homogenous because it consists of many components adding sugar, salt, vegetable oil, and roasted peanuts.
Thus, option C is correct.
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With circulation, the heart provides your body with:
a. oxygen
b. nutrients
C. a way to get rid of waste
d. all of the above
Answers
Explanation:
The lungs pump oxygen in and carbon dioxide out, which goes through the blood stream to help with the cell's energy needs.
Nutrients pass through the blood stream as well. The nutrients start with the digestive system (mouth, esophagus, stomach, small intestine) before going into the blood stream. The nutrients are building blocks to help make new cells when old ones die off.
When those cells die off, the body sheds them like dead skin, but internal dead cells are passed off as waste. This waste and other byproducts the body doesn't need passes through the blood stream as well.
In short, the blood stream is basically the highway to help get desired materials (eg: oxygen and nutrients) and get rid of waste (eg: carbon dioxide and other unwanted byproducts or dead cell material)
So that's why the answer includes A, B and C.
define pH ?
do it fast , okay
Answers
Answer:
pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral.
What is the number of moles of solute in 80mL of a 0.35M solution?
Answers
To determine the number of moles of solute in a solution, we need to use the formula:
moles of solute = concentration (in M) x volume (in liters)
However, before we can use this formula, we need to convert the volume from milliliters (mL) to liters (L):
80 mL = 80/1000 L = 0.08 L
Now we can use the formula to find the number of moles of solute:
moles of solute = concentration x volume
= 0.35 M x 0.08 L
= 0.028 moles
Therefore, there are 0.028 moles of solute in 80 mL of a 0.35 M solution.
How much heat energy is required to heat a 100 g sample of liquid water from 30 °C to water vapor at 110 °C?The specific heat of liquid water is 4.184 J/(g K) and water vapor is 2.008 J/(g K). The heat of vaporization for water is 2259 J/g and the heat of fusion is 334.72 J/g
Answers
The total heat energy required is expressed according to the formula:
\(\begin{gathered} Q_T=Q_{\text{vap,w}}+Q_w \\ \end{gathered}\)where:
Qvap is the heat energy absorbed by the vapor
Qw is the heat energy absorbed by the water
Get the heat energy absorbed by the vapor at 100 degrees
\(\begin{gathered} Q_{\text{vap,w}}=n_w\times\triangle H_{vap,w} \\ Q_{\text{vap,w}}=\frac{mass}{molar\text{ mass}}\times\triangle H_{vap,w} \\ \end{gathered}\)Given the following parameters;
Mass of water = 100g
Molar mass of water (H2O) = 18.015g/mol
Hvap,w = 2259 J/g = 40.8 kJ/mol
Substitute the given parameters into the formula to have:
\(\begin{gathered} Q_{\text{vap,w}}=\frac{100\cancel{g}}{18.015\cancel{g}\cancel{\text{mol}^{-1}}^{}}\times\frac{40.8kJ}{\cancel{\text{mol}}} \\ Q_{\text{vap,w}}=226.48kJ \end{gathered}\)Get the heat absorbed by the water from 30 to 100 degrees and from 100 to 110 degrees using the formula below. Note that the water vapor is being heated without any phase changes, so we will be utilizing the specific heat capacity of water vapor.
\(\begin{gathered} Q_w=m_wc_w(\triangle\theta)_w+m_wc_w\triangle\theta \\ Q_w=(100\times4.184\times(100-30))+(100g\times2.008\frac{J}{g^oC}\times(110-100)^oC) \\ Q_w=(100\times4.184\times70)+(100\times2.008\times10) \\ Q_w=29,288+2008 \\ Q_w=31296\text{Joules} \\ Q_w=31.296kJ \\ \end{gathered}\)Get the total heat energy required;
\(\begin{gathered} Q_T=226.48kJ+31.296kJ \\ Q_T=257.776kJ \end{gathered}\)A rock collection comes from which part of Earth?
A. atmosphere
B. biosphere
C. geosphere
D. hydrosphere
Answers
Answer:
c
Explanation:
I looked the answer up it said it was geosphere
Answer:
the answer is geosphere
Explanation:
i hope it helps you
On the day of her students' chemistry final, Prof. Jackson removes the periodic table of elements from the classroom wall. Doing this is which of the following:
Extra-stimulus prompt
Reinforcement prompt
Stimulus fading
Prompt fading
Answers
how many allylic halides (including stereoisomers) can be formed when 3-methylcyclohexene undergoes allylic halogenation with one equivalent of nbs, peroxide, and light?
Answers
When 3-methylcyclohexene undergoes allylic halogenation with one equivalent of NBS (N-bromosuccinimide), peroxide, and light, it can form two allylic halides.
The reaction involves the addition of a bromine atom to the allylic position of the alkene. The two possible products are formed by the addition of the bromine atom to the two different allylic carbons in the 3-methylcyclohexene molecule.
The two allylic halides that can be formed are:
1-Bromo-3-methylcyclohexene (with the bromine atom attached to the allylic carbon adjacent to the methyl group).
1-Bromo-1-methylcyclohexene (with the bromine atom attached to the allylic carbon adjacent to the non-methyl substituted carbon).
These two compounds are stereoisomers of each other since they have the same connectivity but differ in the spatial arrangement around the double bond.
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Part of Newtons first law states an object at rest stays at rest unless acted upon by an unbalanced force. Which one is NOT an example of this law?
Answers
Solution :
Sir Isaac Newton was a great scientist. The discoveries of the Newton change the way we see the world. Newton gave us the fundamental principles through which the entire universe is governed.
Newtons 1st law of motion states that a body moves or stays in position until and unless an external force is applied to the body.
This is the law of nature.
An example which do not support this law can be a body having a huge mass and a small boy applies force to move it but is unable to move the body.
In my organic lab, we extracted spinach pigments through grinding the leaves and adding dichloromethane to the leaves. Then we vacuum filtered the mixture and poured the filtrate into a sepratory funnel. We then added water and it separated into two layer and we drained the bottom layer. What is the purpose of adding water to the sepratory funnel?
Answers
The purpose of adding water to the separatory funnel in your experiment was to facilitate the separation of the pigments from the solvent using liquid-liquid extraction. The water created two immiscible layers in the funnel, allowing for the separation of the pigments in the organic layer
In organic chemistry labs, the separation of different components of a mixture is crucial. One common tool used for this purpose is a separatory funnel. It is a piece of laboratory equipment that enables the separation of two immiscible liquids, which means that they do not mix with each other.
In your experiment, you used a separatory funnel to separate the pigments extracted from spinach leaves using dichloromethane. After the vacuum filtration, you poured the filtrate into the separatory funnel and added water.
The purpose of adding water was to create two immiscible layers in the funnel. Water and dichloromethane do not mix, and hence, they separate into two layers. The bottom layer containing the water was drained, while the top layer containing the extracted pigments and dichloromethane was collected.
This process is called liquid-liquid extraction, which involves the separation of two liquids that are not soluble in each other. The separation is based on the differences in their densities, which allows for the formation of distinct layers in the separatory funnel. Water was added to aid in the separation and to remove any impurities that might be present in the organic layer.
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Please help
How many atoms are in grossular/Ca2AL2(SiO4)3
____ calcium atoms amount
____ Aluminum atoms amount
____ silicon atoms amount
____ Oxygen atoms amount
Answers
According to the chemical formula, there are 2,2,3 and 12 atoms of calcium,aluminium ,silicon and aluminium respectively in grossular.
What is chemical formula?
Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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a sample of carbon-14 has been decaying for 17,190 years and is now 52.0 grams. what was the size of the original sample? (the half-life of carbon-14 is 5,730 years.)
Answers
The original size of the carbon-14 sample can be calculated using the concept of radioactive decay and the half-life of carbon-14. Based on the given information, the original sample size was approximately 416 grams.
The decay of a radioactive substance can be described by the equation N = N0 * (1/2)^(t/t1/2), where N is the current amount, N0 is the initial amount, t is the time elapsed, and t1/2 is the half-life of the substance.
In this case, the current amount N is 52.0 grams, the time elapsed t is 17,190 years, and the half-life t1/2 of carbon-14 is 5,730 years. We need to solve for the initial amount N0.
Rearranging the equation, we have:
N0 = N * (2^(t/t1/2))
Substituting the known values, we get:
N0 = 52.0 * (2^(17190/5730))
Calculating the exponent and evaluating the expression, we find:
N0 ≈ 52.0 * 0.125
N0 ≈ 6.5
Therefore, the original size of the carbon-14 sample was approximately 6.5 grams.
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A football player runs 80 yards for a touchdown! It takes him 20 seconds. What is his speed?
Answers
Answer:
4 yards/second is the answer
Answer:
the answer is 4 yards per second
Explanation:
80 yards in 20 seconds
20+20+20+20=80
there are 4, 20s to make 80
in other words...
80÷4=20
Pan of water sitting outside during a hot sunny day. The temperature of the water goes up. What type of heat transfer causes the temperature to go up?
Answers
Answer: Convection
Explanation:
I hope this helps :D
Answer:
Radiation
Explanation:
It said that was the answer on the test.
A pan of water is sitting outside during a hot sunny day. The temperature of the water goes up. What type of heat transfer caused the temperature to go up?
conduction
induction
Incorrect: convection
Correct: radiation
PLZ help, I'm really behind in school! I will mark brainliest for correct answers!
If the distance between two objects is reduced by a factor of 5, how will Fg be affected?
A. F g decreases to 1/25
B. F g increases by 5 times
C. F g decreases to 1/5
D. F g increases by 25 times
Answers
Answer:
Gravitational force is given by:
F=G×
d
2
m×M
Distance between two masses is increased s.t. new distance is D= 5 d
New gravitational force F
1
=F
Let on of the mass is changed to m
1
so as to maintain the same gravitational force.
Answer:
D
Explanation:
F g increases by 25 times
If the mass of the products (AlCl3 and Cu) are 146g total and the mass of CuCl2 on the reactant side is 126 grams, what is the mass of Al
Answers
Your limiting reagent will be copper (II) chloride. The mole ratio is the most crucial tool you'll have to tackle this problem, or any other stoichiometry problem, for that matter.
Keep in mind that in order to make 3 moles of copper from 3 moles of copper (II) chloride, you need 2 moles of aluminum. Unbalanced reaction: Al(s)+HCl(aq) AlCl3(aq)+H2(g). Cl. Balance On the product side there are three Cl atoms and on the reactant side there is one. There is only one hydrogen atom on the reactant side and two on the product side of the reaction Mg + HCl MgCl 2 + H 2. The equation is therefore unbalanced.
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What types of reactions take place in hot packs and cold packs? What evidence shows that
both hot packs and cold packs experience chemical reactions? Drag and drop the text into
the correct boxes.
Answers
Answer:
reaction to cold pack: change in temperature
Evidence of a chemical reaction etc is change in composition
Explanation: composition is atoms changeing and etc, which is a chemical reacton i think. Change in temperture is alsoa chemical reaction but cold packs
Answer:
Cold pack: absorbs heat (endothermic reaction)
Hot pack: releases heat ( exothermic reaction)
Explanation:
when a cold pack/hot pack is shaken, water mixes with the chemicals in the outer layer and reacts to release or absorb heat.
3H2SO4 + 2B(OH)3 → B2(SO4)3 + 6H₂O
What is the mole ratio between
water and sulfuric acid?
[ ? ] mol H2O
mol H2SO4
Answers
The mole ratio between the sulfuric acid and the water is 3:6.
What is the mole ratio?We know that the mole ratio has to do with the ratio of the molar coefficients of the reactants and the products. When we are talking about the molar coefficients, we are talking about the numbers that are written before the symbols of the compounds.
We can now see that there are six moles of the water and there are three moles of the sulfuric acid. The sulfuric acid is the compound that has the symbol \(H_{2} SO_{4}\).
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Answer:
Explanation:
its 6:3 not 3:6 not trying to be rude but its the other way around!!! :)