![Calculate The PH Of The Solutions With The Following [OH-].](https://brainimage.s3.us-east-005.backblazeb2.com/contents/attachments/VKHYLMgnQTVl3RmKAjVmVP4ABPeaYWqG.png)
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Potassium manganate(VI), K2MnO4, can be made to react with water,
forming potassium permanganate, KMnO4, potassium hydroxide,
KOH, and hydrogen gas. This reaction is used in industry to produce
potassium permanganate, which is widely used in analytical chemistry.
Write the balanced equation for this reaction
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Coefficients are in parentheses and subscripts are just normal letters
The main reason that we have different types of energy on the electromagnetic spectrum is because they have different
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Answer:
Explanation:
The main reason is because they have different energy in the photon and different wavelength.
In the electromagnetic radiations, radio waves have little energetic photons, micro wave have more that radio waves, the visible light, ultraviolet x Ray's, and gamma Ray's have more energetic photons. They have different wavelength. The shorter the wavelength, the higher the frequency. Wavelength decreases while frequencies increases.
are you doing work when u are cleaning your teeth
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Answer: Yes you are.
Explanation:
A deep teeth cleaning can remove a buildup of plaque and tartar on your teeth, reducing gum inflammation and improving gum health. Plaque is a sticky film that forms on teeth. It contains bacteria and develops when food particles mix with saliva. You can remove plaque, which collects on teeth daily, by brushing your teeth.
An ideal gas fills a balloon at a temperature of 227ºC and standard pressure. By what factor will the volume of the balloon change if the gas in the balloon is heated to 327ºC at standard pressure? Identify which gas law applies and show your work to receive full credit. Highlight the correct answer below. (2 points)
a. 227/327
b. 5/6
c. 6/5
d. 2/1
e. 327/227
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Answer:
e. 327/227
Explanation:
This is the correct standard pressure.
Movement of the ___
creates the London dispersion forces.
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Answer: electrons
Explanation: moving electrons cause momentarily charge
Distribution on molecule. This distribution induces similar distribution to
Adjacent molecule.
Bob sees some water droplets on the outside surface of a glass of lemonade. What process of the water cycle explains this?
A. condensation
B. evaporation
C. precipitation
D. transpiration
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A. condensation
Answer:
es la a porque ay está condensación por
Calculate the amount of heat needed to heat a 100.0 g sample of distilled water from 25°C to 65°C
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what is the mass, in grams, of potassium in 12.5 g of k
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Answer:
Option d)3.32 g is correct.
Explanation:
hope this helps
Each solute in the table is mixed in a volume of 500 mL of water. Organize the solutions from least conductive to most conductive.
A)
4,2,1,3
B)
4, 1, 2, 3
C)
2, 4, 3,1
D)
1, 3, 4,2
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Answer:
b
Explanation:
Answer:
B) 4,1,2,3
Explanation:
Did it on USA Test prep. :)
Sodium is a compound
O True
or
O False
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Answer:
i think false.
Explanation:
tell me if this is wrong
: Calculate molar mass of the following compounds:
NaCl :
Ba(NO3)2:
K(MnO4):
Cl2:
CO2
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Answer:
1. 58.5g/mol
2. 261g/mol
3. 158g/mol
4. 71g/mol
5. 44g/mol
Explanation:
The molar mass of a compound is the total mass of the sum of masses of all individual elements that make up the compound. First, we need to know the atomic masses of each element in a compound.
1. NaCl
Where; Na = 23, and Cl = 35.5
Molar mass of NaCl = 23 + 35.5
= 58.5g/mol
2. Ba(NO3)2:
Where; Ba = 137, N = 14, O = 16
Molar mass of Ba(NO3)2: 137 + {14 + 16(3)} 2
137 + (14 + 48)2
137 + (62)2
137 + 124
= 261g/mol
3. K(MnO4)
Where; K = 39, Mn = 55, O = 16
Molar mass of KMnO4 = 39 + 55 + 16(4)
= 94 + 64
= 158g/mol
4. Cl2
Where; Cl = 35.5
Molar mass of Cl2 = 35.5(2)
= 71g/mol
5. CO2
Where; C = 12, O = 16
Molar Mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
What volume of 2.0 M sodium phosphate must be used to make 4.0 L of 0.80 M sodium phosphate?
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Answer:
the amount of soduim phosphate is will be 52 percemt
Explain each of these impacts and suggest a solution that would reduce the losses caused by bycatch.
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Answer:
Bycatch can negatively affect species such as dolphins, sea turtles, protected fish, and whales by harming animals, contributing to population declines, and impeding population recovery. Other impacts of fisheries on marine mammals may include removal of their preferred prey and sometimes habitat damage.
Explanation: hey could i get to kno u or sum
A plastic bag containing 2.2 L of gas at
1.0 atm pressure is cooled from 30°C to
0 °C. What will be the volume of the gas?
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Answer: The volume of the gas is 1.98 L.
Explanation:
To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.
[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.
We are given:
[tex]V_1=2.2L\\T_1=30^oC=(30+273)K=303K\\V_2=?\\T_2=0^0C=(0+273)K=273K[/tex]
Putting values in above equation, we get:
[tex]\frac{2.2}{303}=\frac{V_2}{273}\\\\V_2=1.98L[/tex]
Thus the volume of the gas is 1.98 L
3. Infer Do all elements have half-lives? Why or why not?
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Answer:
Elements with short half lives exist because each element has stable isotopes, and the decay os isotopes create more isotopes as well.
in pressure dunt
uwing
frost shattering
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Answer:
i dont get it???????
Explanation:
What do we call the phenomena when plants bend towards the light?
Photomorphogenesis
Auxin
Phototropism
Photosynthesis
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Use the drop-down menus to complete the sentences.
The gain of electrons is called _________
The loss of electrons is called _________
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Answer:
1.Reduction
2.oxidation
Explanation:
Answer:
Reduction
Oxidation
Explanation:
Which separation technique could be used to separate a mixture based on differnces in boiling point.
a. filtration
b. distillation
c. chromatography
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Compare and contrast stomata with the pores found in liverworts. Compare and contrast stomata with the pores found in liverworts. Stomata doesn't allow CO2 to diffuse and cannot be closed if conditions become dry. Liverwort pores allow gas exchange and cannot be closed either if conditions become dry. Stomata allow CO2 to diffuse and can close to minimize water loss. Liverwort pores doesn,t allow gas exchange and cannot be closed if conditions become dry. Stomata allow CO2 to diffuse and can close to minimize water loss. Liverwort pores allow gas exchange and cannot be closed if conditions become dry. Stomata allow CO2 to diffuse and cannot be closed if conditions become dry. Liverwort pores allow gas exchange and can close to minimize water loss.
Answers
Answer: Stomata allow CO2 to diffuse and can close to minimize water loss. Liverwort pores allow gas exchange and cannot be closed if conditions become dry.
Explanation:
In the kingdom plantae, the liverworts belong to the phylum Bryophyta. A liverwort has a simple structure, ribbon- like body, that lies flat on the ground and is attached to the soil by many rhizoids. They grow in damp places on land and are capable of controlling gaseous exchange through the pores found on their leaf surfaces. Liverworts are non- vascular plants therefore they lack stomata. Unlike the stomata of vascular plants which close in dry weather, the air pores of liverworts remain open all the time. Liverworts cannot control their water loss (transpiration) through the pores.
Stomata are found in the epidermal layer of leaves in vascular plants. The opening and closing of stomata, through the help of the guard cells, control the flow of gases in and out of the leaves. This control is necessary to prevent excessive loss of water as vapour from the plant body throughout transpiration. Changes in the solute concentration of the guard cells cause water to flow in and out of the leaf epidermal cells.
Therefore, to COMPARE the stomata with pores of liverworts, they both allow gaseous exchange but in CONTRAST, stomata has the ability to control water loss as it can open and close while the pores lack this ability.
Necesito ayuda 3.- Anota las características que correspondan a cada tipo de hibridación. Tipo de hibridación, Arreglo geométrico, Angulo de enlace entre dos orbitales, No. De átomos que se pueden unir al carbono, Tipos de enlaces en el carbono, Tipo de compuesto donde se presenta sp3 sp2 sp
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Answer:
ver explicacion
Explanation:
Los orbitales híbridos se obtienen mediante una combinación de orbitales atómicos.
En un átomo de carbono con hibridación sp3, el átomo de carbono es tetraédrico con un ángulo de enlace de 109,5 grados. Se pueden unir cuatro enlaces simples al átomo de carbono. Se pueden unir un total de cuatro átomos al carbono. Se puede unir un total de cuatro átomos al carbono, lo que ocurre en alcanos como el metano
Para un átomo de carbono con hibridación sp2, hay dos enlaces dobles y dos enlaces simples unidos al átomo de carbono que tiene una geometría plana trigonal con un ángulo de enlace de 120 grados. Se pueden unir un total de dos átomos al carbono. Se pueden unir un total de dos átomos al carbono. Esto ocurre en alquenos como el eteno.
Un átomo de carbono con hibridación sp tiene un ángulo de enlace de 180 grados y tiene una geometría lineal con un enlace triple y un enlace sencillo. Solo se puede unir un átomo al carbono. Esto ocurre en alquinos como el etino.
Which 0.1 M solution has a pH greater than 7?
w
1. C6H1206
2.CH3COOH
3.КСІ
4.KOH
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Answer:
4) KOH
Explanation:
Trust
0.1 M KOH has a pH greater than 7.
What is pH?
The pH of a solution is a measure of hydrogen ion (H+) concentration, which is, a measure of acidity.
What is POH?The pOH of a solution is measure of hydroxide ions (OH).which is a measure of basicity.
The pH of
CH3COOH is 2.88..КСІ is 7KOH is 12∴According to the question the pH greater than 7 is KOH
Learn more about pH here: https://brainly.com/question/172153
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True or False: Once the formulas for the reactants and the products are determined, the subscripts may not be changed.
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Answer:
true
Explanation:
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The answer is true because if you attempt to change the subscripts, your are messing up the whole equation. You can only change the coefficients. Changing the subscripts are changing the elements charge overall.
Why is DNA called a double helix?
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Answer:
the double helix of dna is, like its name, implies, in the shape of a helix which is essentially a three-dimensional spiral. the double comes from the fact that the helix is made of two long strands of dna that are intertwined—sort of like a twisted ladder.
Explanation:
hope this helps :)
have a nice day !!
Which factor decreases the rate of solution?
an increase in the surface area of the solute
an increase in pressure
increased stirring
a decrease in temperature
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Answer:
the correct answer is D) a decrease in decrease in temperature
have a good day! :)
Explanation:
The factor that decreases the rate of solution is a decrease in temperature. Details about rate of a solution can be found below.
What is a solution?A solution is a homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.
The rate at which a solution moves can be affected by the following:
The surface area of the soluteThe pressure appliedThe temperatureThis means that the factor that decreases the rate of solution is a decrease in temperature.
Learn more about temperature at: https://brainly.com/question/24106768
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What does a wave carry
A.Energy B.Matter C.Molecule D.Particle
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Answer:
Energy
Explanation:
As waves move from one place to another, they carry energy. Generally, the medium itself doesn't move much as it is the disturbance that is being transmitted
Answer:
energy because a wave isnt like a physical thing so it isnt gonna have matter or particles or molecules its just a movement of energy like a sound wave has no matter so it doesnt have particles and stuff
Explanation:
i know i sound very scientific XD
lord omg okay help pls lol
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Explanation:
answer is A cell membrane
( you are bad at biology too anyways that's just a joke)
4. Which of the following describes a hydrogen bond? *
a) the bond between two
hydrogen atoms within a molecule of water
b) the bond between hydrogen in one water molecule and another hydrogen in a different water molecule
c) the bond between hydrogen and oxygen within a molecule of water
d) the bond between hydrogen in one water molecule and oxygen in a different water molecule
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The statement that describes a hydrogen bond is the bond between hydrogen in one water molecule and another hydrogen in a different water molecule. The correct option is b.
What are hydrogen bonds?Hydrogen bonds are the bonds that are formed between water molecules and other molecules that join with hydrogen. These are weak bonds. This bond is formed between hydrogen atoms and other atoms.
One of the bonds that allow molecules to associate is the hydrogen bond. It happens when hydrogen forms a covalent bond with an element that is extremely electronegative, such as oxygen, nitrogen, or sulfur.
Thus, the correct option is b) the bond between hydrogen in one water molecule and another hydrogen in a different water molecule.
To learn more about hydrogen bonds, refer to the link:
https://brainly.com/question/19220950
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What is the difference between compost and hummus
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Answer:
A palavra 'composto' também vem do latim, e significa literalmente 'compor' alguma coisa. Então esta é a composição que podes ver no frasco à direita. O composto é uma composição de todos os tipos de substâncias orgânicas que se decompõem com o tempo e se tornam húmus. O húmus é uma unidade homogênea.
Explanation:
Answer:
below...
Explanation:
The main difference between Compost and Humus is that the Compost is a organic matter that has been decomposed and recycled as a fertilizer and soil amendment and Humus is a any organic matter that has reached a point of stability.
A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g. What is the density of the wood? If the density of water is 1 g/mL, would the wood float in water? Explain.
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Answer: yes
Explanation: