Answer:
0.0015 M
Explanation:
we know, M = n/V = 2.5/1000 = 0.0015 M
You are given a clear-water solution containing potassium nitrate. How could you determine whether the solution is unsaturated, saturated, or supersaturated?
Answer:
If it is unsaturated, we can dissolve some more amounts of potassium nitrate into it Explanation:
En un tanque se halla CO₂ a 285K ocupando un volumen de 8 L. En esas condiciones determinamos el volumen que ocupa a 393K, considerando que la presión se mantiene constante
Answer:
11.0 L
Explanation:
Podemos resolver este problema usando la ley de Charles, que afirma que a presión constante:
T₁V₂=T₂V₁Donde el subíndice 1 indica las condiciones iniciales y el 2 las finales. En este caso:
T₁ = 285 KV₂ = ?T₂ = 393 KV₁ = 8 LIntroducimos los datos:
285 K * V₂ = 393 K * 8 LY calculamos V₂:
V₂ = 11.0 LBalance the following equation:
-_MgCO3 → _MgO + __CO2
Answer:
Decomposition
Explanation:
Magnesite = Magnesium Oxide + Carbon Dioxide
Pls I need help with these I have a test in 1 hour
Answer:
option e
hope helps u
have a nice day
Please help with this , it’s very important
Explanation:
a) Cr is acid K is base
b) Ca is base and the other left part is acid
c)Ca is base and F2 is acid
d) NH4 is acid and SO4 is base
Read the given equation:
Ca(OH)2 + 2HCl - CaCl2 + 2H20
Which of the following is true about the equation? (5 points)
HCI is the base and Ca(OH)2 is the salt.
HCI is the acid and Ca(OH)2 is the salt.
Ca(OH)2 is the acid and Cacl2 is the salt.
Ca(OH)2 is the base and CaCl2 is the salt.
Answer:
D.
HCl is acid
Ca(OH)2 is base
CaCl2 is salt
In the given chemical equation Ca(OH)2 is the base and CaCl2 is the salt, thus option D is correct.
What is chemical equation?A chemical equation is a symbolic representation of a chemical reaction that shows the products, reactants, and direction of the reaction.
An acid is any hydrogen-containing substance that is capable of donating a proton (hydrogen ion) to another substance.
A base is a chemical species that donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution.
A salt, in chemistry, is defined as the product formed from the neutralisation reaction of acids and bases.
Therefore, in this chemical equation option D is true about the equation i.e
Ca(OH)2 is the base and CaCl2 is the salt.
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Question 2 of 10. What is Diffusion?
Answer:
diffusion: the movement of molecules in a solution from an area of
higher concentration to an area of lower concentration
Diffusion is the movement of particles from where there are more to where there are less. This movement occurs until particles are evenly spread out. While diffusion can be seen in all states of matter, it is most common in liquids and gases.
Which of the following phenomena would be associated with the Big Bang theory.
-The universe is contracting
-Hot, Expanding matter eventually condensed into galaxies
-The universe began as a cool massive star
-Cool, Expanding matter eventually heated and became suns
-The universe is expanding
-The universe began in a hot dense state
Click on All Correct Answers
The big bang is characterized by an expanding universe.
What is the big bang?The scientists hold the theory that the universe is the result of a massive explosion that marked the beginning of the universe. Since the big bang, matter has been spreading.
Hence, one thing that has become associated with the big bang is the idea of an expanding universe.
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A pool owner adds a compound containing chlorine to the pool to disinfect it. However, too much of the compound is added. As a result, the water becomes too acidic. What could the pool owner do to reduce the acidity of the pool
The question is incomplete, the complete question is;
A pool owner adds a compound containing chlorine to the pool to disinfect it. However, too much of the compound is added. As a result, the water becomes too acidic. What could the pool owner do to reduce the acidity of the pool?
He could add another acid to the pool to compete with the existing acid.
He could add a metal salt to the pool to precipitate the acid.
He could add a base to the pool to neutralize the acid.
Answer:
He could add a base to the pool to neutralize the acid.
Explanation:
The reaction between an acid and a base is called a neutralization reaction. A neutralization reaction is defined as a reaction between an acid and a base leading to the formation of salt and water only.
If the owner of the pool discovers that the pool has become too acidic, all that needs to be done is to introduce a base into the pool that will neutralize the acid according to the reaction;
Acid + base ------> salt + water
An electromagnetic wave has a wavelength of 4000 meters. What is this wave length and scientific notation?
A. 4.0 x 10-3 m
B. 4.0 x 10 3 m
C. 4.0 x 10 2 m
D. 4.0 x 10-2 m
Answer:
Wavelength of electromagnetic wave = 4.0 × 10³
Explanation:
Given:
Wavelength of electromagnetic wave = 4000 meter
Find:
Write, Wavelength of electromagnetic wave into scientific notation
Computation:
Wavelength of electromagnetic wave = 4000 meter
Wavelength of electromagnetic wave = 4.0 × 1,000 meter
Wavelength of electromagnetic wave = 4.0 × 10³
So,
Option "B" is the correct answer to the following question.
Im confused someone please help me
Which effects would many organisms likely experience if global warming occurs? Check all that apply.
disrupted food webs
increased competition
increased number of glaciers
disrupted life-cycle events
forced relocation
and any MHA fan to
Answer:
Disrupted food webs
increased competition
disrupted life-cycle events
forced relocation
Explanation:
Global warming refers to a gradual rise in the temperature of the earth due to the increase in the concentration of greenhouse gases in the atmosphere which trap infrared radiation close to the earth.
This gradual increase in the temperature of the earth often have devastating effects on the lives of various organisms on earth. These effects include;
Disrupted food webs
increased competition
disrupted life-cycle events
forced relocation
Due to changes that occur in the ecosystem as a result of global warming, many species may be compelled to relocate from place to place. This in turn disrupts food webs and may lead to disruption of life cycle events of the concerned organisms. Decrease in the number of certain populations due to global warming may lead to increased competition among species for food.
Why chemical industry important for the nation with its examples.
Explanation:
employment in the country.
economic boom n latest techonology.
less poverty.
more development.
more jobs for people.
increase in exports which will make large profits n will be utilized in the development of country.
GDP per capita will increase.
high standard of living.
conclusion on friendship
Explanation:
Conclusion. A good friendship is very difficult to come across. That is why we should appreciate this divine relationship that is based on understanding and feelings. ... A true friend is one of the most precious possessions that one can have in his life.Hope it's helpful for Yuh bro!!
Answer:
Friendship is, in many respects, a "comfortable" love relationship. Friendships involve as little or as much intimacy as the partners are inclined to express at any given time. Friends are not normally obligated to exchange benefits, but do so in ways that are often so natural as to be unwitting. The ties that bind them are by unfettered mutual consent. In spite of its being so comfortable, in fact because of it, friendship contributes in unique ways .
Anthony needs to make a solution with a concentration of 2.5m. He begins with 2.0 iters and a 8.0M solution. What final volume does he need. Tally and solve.
Answer:
The final volume is 6.4 L.
Explanation:
Dilution is reducing the concentration of a chemical and is achieved by adding more solvent to the same amount of solute. In other words, dilution is the procedure that is followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.
In a dilution the amount of solute does not vary, and as only more volume (and mass) of solvent is being added, the concentration of the solute decreases.
In a dilution the expression is used:
Ci*Vi = Cf*Vf
where:
Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volumeIn this case:
Ci: 8 M Vi: 2 L Cf: 2.5 M Vf: ?Replacing:
8 M* 2 L= 2.5 M* Vf
Solving:
[tex]Vf=\frac{8 M* 2 L}{2.5 M}[/tex]
Vf=6.4 L
The final volume is 6.4 L.
You decide to race your buddy after school. The race starts at the 10 yard line and ends at the 50 yard line. How long was the race
Answer:
Long of the race = 40 yard
Explanation:
The long of the race is measured from the distance in the beginning (10 yard line) to the distance and the end of the race (50 yard line). The distance of the race is the difference between both lines. That is:
Long of the race = 50 yard - 10 yard
Long of the race = 40 yard
Describe the surgery that would be used to treat Kayla's condition. What are the risks of the surgery?
Answer:
By pass surgery.
Explanation:
Kayla is suffering with blocked artery. The doctors have tried to open up her blocked artery with injecting the stunt by angioplasty process. The treatment had been unsuccessful and she is still complaining chest pain. The next move of the doctors would be by pass surgery which will open up the blocked artery. There are many risks involved in this surgery. The patient may get into coma due to excess bleeding or she may die if her blood pressure shoots up during surgery.
Question 1
Part A
Describe the sequence of adding ingredients to make the recipe for condensed tomato soup. To mix the ingredients, you have an industrial-sized vat with a capacity of 800 L. You also have the ability to heat what is in the vat and/or stir the vat, both of which require energy and therefore, cost you money. Focus on the fact that the manufacturing process should be time efficient and cost efficient in terms of energy use. Be sure to refer to the solubility charts or graphs that you find for salt and sugar during your research. Finally, presume that the tomato powder has low solubility which is not temperature dependent.
Part B
What changes could be made to optimize the manufacturing process?
Answer:
Part A:
"360 grams of NaCl can be dissolved in 1 L water. So, 2000 grams sugar can be dissolved in 1 L water then we can say that the solubility of salt is lesser in water as to sugar and both heightened by increasing the temperature. If we make a batch of 800 L we can add sugar, 1600 kg at 25 0c. We can add salt is 288 kg at 25 0c and the ingredient tomato is having low solubility."
Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/8061-describe-the-sequence-of-adding-ingredients-to-make-the-recipe.html
Part B:
'Manufacturers can generate new value minimize cost and increase operational stability by focusing on 4 broad areas; Management, Supply Circle, Product Design, and Value Recovery.'
Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/2807911-what-changes-could-be-made-to-optimize-the-manufacturing-process.html
In order to make tomato soup, the salt NaCl is first added, then followed by sugar and finally the tomato powder.
What are the ingredients required in making tomato soup?Tomato soup is made of the following ingredients:
Tomato powder salt, NaClsugarIn order to make tomato soup, the salt NaCl is first added, then followed by sugar. This is to ensure increase in the boiling point of water and to reduce the heating time of the tomato soup.
The solution is heated to induce more dissolution if solute and finally the tomato powder is added.
In order to optimize the manufacturing process, changes should be made in the design, supply and composition of the soup.
Therefore, an optimized manufacturing process will reduce cost of production.
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Electrical charge of an alpha particle is,
A. +1
B. +2
C. +3
D. +4
Para este mismo ejercicio, si se administran 2.5 litros de está solución (2,500ml) en un intervalo de 24 horas que cantidad en gramos de paciente en un día?
Answer:
Se administran 2500 gramos de solución por día.
Explanation:
Dado
Volumen de la solución = 2,5 litros
Como sabemos 1 litro = 1000 gramos
Por lo tanto, 2.5 litros = 2500 gramos
Se administran 2,5 litros en un intervalo de 24 horas o 1 día.
De ahí que se pueda decir que se administran 2500 gramos de solución al día.
what is love?
A)don't hurt me
B)don't hurt me
C)No more
Answer:
C
Explanation:
I think it is a ever lasting process of pain and happiness cause the ones that are closest to you can make it hurt most but they can also make your day So probably
are manifested as
instantaneous charge differences due
to molecular interactions.
Dipole-dipole
interactions
Dispersion
forces
Hydrogen
bonds
dipole: dipole interactions
- dispersion forces (London forces)
- hydrogen bonds
as the attractive forces between molecules becomes larger, it takes more energy to separate them
- as a result, vapor pressures, boiling points and melting points will be larger
occur between molecules that have a permanent dipole moment
- H-Cl----H-Cl
How many grams of sodium chloride could be produced from 94.3 g of sodium
239.8 g so 240g
Explanation:
plz let me know if this is right than I can tell u how I did it :)
What volume of hydrogen will produced at 1.45 atm and a tempeture of 20C by the reaction of 37.6g of magnesium 1Mg+2H2O--> Mg(OH)2+H2
Answer:
V = 25.7 L.
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to solve for the volume of hydrogen, by firstly calculating the moles of this gas produced by 37.6 g of magnesium, according to the 1:1 mole ratio between them:
[tex]n_{H_2}=37.6gMg*\frac{1molMg}{24.305gMg}*\frac{1molH_2}{1molMg}=1.55molH_2[/tex]
Now, we use the ideal gas equation:
[tex]PV=nRT[/tex]
To solve for the volume, and obtain:
[tex]V=\frac{nRT}{P}\\\\V=\frac{1.55mol*0.08206\frac{atm*L}{mol*K}*293.15K}{1.45atm}\\\\V=25.7L[/tex]
Regards!
If you have 500 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base do you need to make the buffer with a pH of 7.74 (assuming no change in volume)
Answer:
5.90g of NaClO are needed
Explanation:
Assuming the weak acid is HClO pKa = 7.54
To solve this question we must use the H-H equation for acids:
pH = pKa + log [A-] / [HA]
Where pH is the pH we want = 7.74
pKa is pKa of the weak acid = 7.54
[A-] could be taken as the moles of the conjugate base (Moles NaClO) and [HA] moles weak acid = 0.500L * (0.10mol/L) = 0.0500 moles HClO
Replacing:
7.74 = 7.54 + log [NaClO] / [0.0500 moles]
0.20 = log [NaClO] / [0.0500 moles]
1.5849 = [NaClO] / [0.0500 moles]
Moles NaClO = 0.0792 moles
The mass is: -Molar mass NaClO = 74.44g/mol-
0.0792 moles * (74.44g / 1mol) =
5.90g of NaClO are needed5.90g of NaClO mass of the sodium salt of the conjugate base are need to make the buffer with a pH of 7.74.
What is pH?pH tells the solution is acidic or basic. pH means potential hydrogen.
Given,
Assuming the weak acid is (hypochlorous acid) HClO
pKa = 7.54
[tex]pH = pKa + \dfrac{ log[A-] }{ [HA]}[/tex]
(Moles NaClO) and [HA] moles weak acid = 0.500L * (0.10mol/L) = 0.0500 moles HClO
Putting the value
[tex]7.74 = 7.54 + \dfrac{ log[NaClO] }{ [0.0500 moles]}\\0.20 =\dfrac{ log}{[0.0500 moles]} \\1.5849 =\dfrac{ [NaClO]}{Moles\;of\; NaClO } = 0.0792 moles[/tex]
The mass is
Molar mass NaClO
= 74.44g/mol - 0.0792 moles * (74.44g / 1mol)
=5.90g of NaClO are needed
Thus, 5.90g of NaClO are needed.
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____is the degree of hotness or coldness of a body or place
HELP ASAP
Which BEST explains the
relationship between the greenhouse
effect and global warming?
global warming causes the
greenhouse effect
greenhouse effect decreases
global warming
greenhouse effect increases
global warming
greenhouse effect is the same
as global warming
Answer:
greenhouse effect is the same as global warming
Explanation:
they both mean warming of the earths surface
please look at the attached photo
Explain why for static electricity to occur between two surfaces that are rubbed against each other, one of the materials has to be an insulator
When two surface come in contact and rub each other a frictional force causing them s deformation and this leads to a voltage giving rise to a static charge.
What is static charge?Static charge is developed within a body temporarily with an induced polarization. These charges are not moving and set into a pole in the material.
When two materials rub against each other in which one is a conductor and other to be an insulator, they will attract by the induced polarization. Rubbing causes the free electrons in the condutor to be transferred towards the insulator.
This will cause a deformation that, the random charges in the material get polarized where the electrons in the insulator will repel to the opposite pol and positive charges will align in a pole close to the condutor.
This charge separation causes the positive pole of the insulator gets attracted into the conductor surface. Hence, there forms a static electricity by the passage of electron.
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Formulas for the compounds below.
Sulfur Trioxide
Sodium hydroxide
Sulphur Trioxide = So3
Sodium Hydroxide = NaoH
Answer:
[tex]\huge\boxed{Sulfur \ Trioxide\hookleftarrow}[/tex]
✐ SO3[tex]\huge\boxed{Sodium \ Hydroxide\hookleftarrow}[/tex]
✐ NaOHʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐