Answer:
The division used by Isaac Newton, in his color wheel, was: red, orange, yellow, green, blue, indigo and violet; a mnemonic for this order is "Roy G. Biv". Less commonly, "VIBGYOR" is also used for the reverse order. In modern divisions of the spectrum, indigo is often omitted.
Explanation:
D
The object was closest to the color blue on the color spectrum will be sun.
What is spectrum?The distinctive wavelengths of given electromagnetic radiation that are released or absorbed by a material, atom, as well as molecule are known as a spectrum.
What is color?The perception of color is based on how the human vision reacts to light and how light interacts with objects.
Isaac Newton's color wheel was divided into the following groups: red, orange, yellow, green, blue, indigo, and violet. The acronym "Roy G. Biv" can be used to remember this arrangement. The reverse sequence can also be referred to as "VIBGYOR" less frequently. Indigo is frequently left out of contemporary spectrum divides.
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Which process produces the energy that is used in photosynthesis?
O A. Nuclear fusion
B. Chemical reactions
C. Nuclear fission
D. Nuclear decay
Answer: Nuclear fusion
Explanation:
The process that produces the energy that is used in photosynthesis is nuclear fusion. option A is correct.
Photosynthesis is the process by which light energy is converted into chemical energy in the form of sugars. This chemical energy is produced as a result of nuclear fusion reaction .
Photosynthesis takes place in chloroplasts of plants, which are found in the mesophyll of leaves. Inside the chloroplast, is the thylakoids, where the chlorophyll absorbs the various hues of light and nuclear fusion reaction takes place to create energy .
Using light energy, oxygen is produced as a byproduct while carbon dioxide and water are converted to glucose .
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A seais usually defined as A.A body of freshwater that is not connected to the ocean B. A body of freshwater that is connected to the ocean C. A body of salt water that is not connected to the ocean D. Body of salt water that is connected to the ocean
Answer:
D. Body of salt water that is connected to the ocean
Explanation:
An ocean is a body of salt water which covers approximately 70% of the Earth's surface. About 97% of the Earth's water is comprised of ocean and as such it is the most prominent and defined feature of the Earth. There are basically four (4) categories of an oceanic basin and these are;
1. The Pacific ocean.
2. The Artic ocean.
3. The Atlantic ocean.
4. The Indian ocean.
A sea is usually defined as a body of salt water that is connected to the ocean and are surrounded (enclosed) by land partially.
Basically, a sea is formed where a land and an ocean meet and as a result, an ocean is usually bigger than a sea.
Some examples of seas around the world are Red sea, Mediterranean sea, Sargasso sea, Caribbean sea, Baltic sea, Caspian sea, Chuckchi sea, etc.
Answer:
Yes The Anwer is D Hope This Help:)
Which represents the correst equilibrium constant expression for Cu(s) +2Ag<------> Cu^2 (aq) +2Ag(s)
Answer:
[tex]Kc=\frac{(Cu2)(Ag)^2}{(cu)(Ag)^2}[/tex]
Explanation:
because it is products / reactants
Hope this helps:)
To draw a Lewis structure for a covalent compound, begin by calculating A, the available electrons, and N, the needed electrons. What is N for silicon tetrachloride, SiCl4?
Answer:
To draw a Lewis structure for a covalent compound, begin by calculating A, the available electrons, and N, the needed electrons.
What is N for silicon tetrachloride, SiCl4?
Explanation:
A covalent compound is formed by the mutual sharing of electrons between two atoms.
According to Lewis octet theory, every atom wants to attain eight electrons around it.
For the given molecule SiCl4
Silicon has four valence electrons.
To attain the nearest inert gas configuration it requires four more electrons.
Each chlorine atom shares an electron and thus silicon attains eight electrons in its valence shell.
The Chlorine atom has seven valence electrons.
To get eight electrons in its valence shell it needs one more electron.
That is shared by the silicon atom.
Thus both Si and Cl attain eight valence electrons by sharing electrons and for the covalent bond.
N value for Si is --- 4.
A the available electrons for Si is ---- 4.
The available electrons for Si 4 and the needed electrons are also 4. A covalent compound is formed by the equal sharing of electrons between two atoms.
A covalent compound is formed by the equal sharing of electrons between two atoms.
According to Lewis octet theory, every atom wants to attain eight electrons in the shell.
For the given molecule [tex]\bold {SiCl_4}[/tex]
Silicon has four valence electrons and Chlorine has 7 electrons in the valence shell. It requires four more electrons to attain the nearest inert gas configuration for silicon and one more electron for chlorine. Each chlorine atom shares an electron and thus silicon attains eight electrons in its valence shell.
Thus both Si and Cl attain eight valence electrons by sharing electrons and for the covalent bond.
Therefore, the available electrons for Si 4 and the needed electrons are also 4.
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226 • Ra 4/2 He + 88 = ?
Answer: the answer for this question is in the pic
Explanation:
what is difference between pipette and flask
Answer:
Erlenmeyer flasks have a narrow neck over a conical base, while beakers are basically large open-mouthed glass jars with a lip and spout for pouring. Graduated cylinders are tall cylinders with a spout to pour liquids; they have hash marks on the side to measure the volume of their contents.
Explanation:
hope it helps you alot
Which statement describes an Arrhenius acid
Answer:
According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs. Hence, the correct statement is arrhenius acid produces hydrogen ions in solution.
What is a conjugate acid-base pair?
Answer:
A
Explanation:
In the Brønsted-Lowry definition of acids and bases, a conjugate acid-base pair consists of two substances that differ only by the presence of a proton (H⁺).
Which are characteristics of electromagnetic waves? Check all that apply.
Answer:
Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E). The spectrum can be ordered according to frequency or wavelength.
what is the total number of protons in carbonate, CO2/3- please help
Answer:
30 positive charged protons
What is the net ionic equation for the following reactant?
Al (s) + HCl (aq) -->
Explanation:
hope the picture above helps u to understand:)
What does the octet rule state that explains why atoms bond?
Answer:
An atom bonds to have eight valence electrons to become stable. ... The third shell would be empty so that the eight electrons in the second level would be outermost after the atom loses one electron.
Explanation:
4. (08.01 MC)
Which of the following describes a unique property of water that helps sustain marine life? (5 points)
It freezes upward from the bottom unlike other liquids that freeze downward from the top.
It has a lower density in its solid state than it does in its liquid state.
It shows changes in density at temperatures above 4 °C.
Am It cools faster and heats up faster than most other liquids.
Answer:
It has a lower density in its solild stae than it does in its liquid state.
Explanation:
Ice floats, allowing life underneath to leave despite the top freezing.
The statement that describes a unique property of water that helps sustain marine life is that has a lower density in its solid state than it does in its liquid state.
What are the unique properties of water?Water is a unique molecule that possesses unique properties as follows:
Water is polarWater is an excellent solventWater has high heat capacityWater has high heat of vaporizationWater has cohesive and adhesive propertiesWater is less dense as a solid than as a liquidThese unique characteristics of water helps aquatic organisms sustain life in a marine environment.
Therefore, statement that describes a unique property of water that helps sustain marine life is that has a lower density in its solid state than it does in its liquid state.
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What is the molar mass caci2
Answer:
Since the molar mass of Calcium is 40.08 g and the molar mass of Chlorine is 35.45, it would be 40.08g+35.45g+35.45g (with 2 Chlorines according to the subscript.) That leaves you with 110.98 g.
Explanation:
Hope it helps you
Which of the following is a redox reaction? (HELP ASAAAP)
A)
MgCO3 → MgO + CO2
B)
Mg(OH)2 + 2HCl → MgCl2 + H2O
C)
CuO + H2SO4 → CuSO4 + H2O
D)
3MnO2 + 4Al → 3Mn + 2Al2O3
Answer:
D
Explanation:
Al is a reducing agent because it removes Oxygen from another compound
Mno2 is an oxidizing agent
How is an alkoxide ion formed??
How much heat is absorbed if 75.4 g of CO2 reacts?
Answer:
6x
Explanation:
Answer:
Δ
H
=
−
389 kJ
Para el elemento de Z-56 b, que formula minima tiene el compuesto que forma con 17-cl¿ c, que tipo de union hay en dicho compuesto¿ d, cual es la estructura de lewis del compuesto formado¿
Answer:
ver explicacion
Explanation:
El elemento que tiene el número atómico 56 en la tabla periódica del bario. El bario es un elemento del grupo dos.
Se combina con el cloro para formar cloruro de bario. que tiene la fórmula BaCl2 de acuerdo con la valencia de ambos elementos.
El cloruro de bario es un compuesto iónico.
For each of the following sets of elements, state whether all of the elements are in the same group, the same period, or neither the same group or the same period.
a. Fe, Ru, Os
b. Rh, Pd, Ag
c. Sn, As, S
d. Se, Te, Po
Answer:
a. Same group, different period
b. Different group, same period
c. Different group, different period
d. Same group, different period
T = 409.5 K, P = 1.50 atm: V = ?L
Explanation:
T = 409.5 K, P = 1.50 atm: V = 22.4 L The ideal gas law is: PV = nRT where. P = pressure. V = volume n = number of moles.
2.00 liters of gas at 1.00 atm and conpresssed it to a pressure of 6.00 atm, what would the volume of the gas be
Answer:
[tex]V_2=0.5L[/tex]
Explanation:
From the question we are told that:
initial Volume [tex]V_1=2.00L[/tex]
initial Pressure [tex]P_1=1 atm[/tex]
Final Pressure [tex]P_2=6atm[/tex]
Generally the equation for Final Volume V_2 is mathematically given by
Since Boyle's law states
[tex]P_1V_1=P_2V_2[/tex]
[tex]V_2=\frac{P_1V_1}{P_2}[/tex]
[tex]V_2=\frac{2*1}{6}[/tex]
[tex]V_2=0.5L[/tex]
What is the balanced equation for the
equilibrium reaction where the aqueous
bicarbonate ion, HCO3(aq); decomposes to
form hydrogen ions, H,
(aq), and carbonate
ions, CO2 ?
Answer: A balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is [tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex].
Explanation:
A balanced chemical equation is defined as the equation which contains same number of atoms on both reactant and product side.
Hence, balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is as follows.
[tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex]
Here, number of atoms present on reactant side are as follows.
H = 1C = 1O = 3Number of atoms present on product side are as follows.
H = 1C = 1O = 3Since, there are same number of atoms present on both reactant and product side. Therefore, this equation is balanced.
Thus, we can conclude that balanced equation for the equilibrium reaction where the aqueous bicarbonate ion, [tex]HCO^{-}_{3}(aq)[/tex]; decomposes to form hydrogen ions, [tex]H^{+}(aq)[/tex] and carbonate ions, [tex]CO^{2-}_{3}[/tex] is [tex]HCO^{-}_{3} \rightleftharpoons H^{+}(aq) + CO^{2-}_{3}[/tex].
How do similar amounts of light transmit through and reflect off the one-way mirror?
Answer:
Through Total internal reflection.
such as formation of multiple images.
Explanation:
As the light ray Strikes the mirror surface, the incident ray is refracted away from the normal and critical angle exceeds the normal.
Hence the light ray partially transmitts or refracts and also reflects.
Similar amounts of light transmit and reflect through one-way mirror by total internal reflection.
What is total internal reflection?Total internal reflection is a complete reflection of a ray of light which takes place within a medium such as water or glass from surfaces which are surrounding and then reflected back into the medium.
This phenomenon occurs when the angle of incidence is greater than the critical angle.It takes place between two transparent boundaries when light ray in a medium of higher refractive index approaches a medium at an incident angle which is greater than the critical angle.
Prisms are shaped to produce total internal reflection and are used in binoculars, telescopes,etc.Light rays are conducted over long paths by multiple total internal reflections such as in fibre optics.
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Match each element or compound with the appropriate symbol or molecular formula. Carbon dioxide CO2 carbon o oxygen Н H water с hydrogen H2O
Answer:
Carbon dioxide ---> CO₂
Water ----> H₂O
Carbon ---> C
Oxygen ----> O₂
Hydrogen ----> H₂
Explanation:
The molecular formula of an element or compound is a formula which represents the composition of a molecule of that element or compound. It consists of the formula representing the atoms present as well as the number of atoms of each element innthe compound written as subscript innthe formula of the element or compound.
The molecular formula of the given elements and compounds are given below:
Carbon dioxide ---> CO₂
Water ----> H₂O
Carbon ---> C
Oxygen ----> O₂
Hydrogen ----> H₂
The molecular formula of carbon dioxide shows that in a molecule of carbon dioxide, there are two atoms of oxygen and one atom of carbon present in a molecule of carbon dioxide.
The molecular formula of water shows that are two atoms of hydrogen and one atom of oxygen present in a molecule of water.
The molecular formula of carbon shows that there are one carbon atoms in a molecule of carbon.
The molecular formula of oxygen shows that there are two oxygen atoms in a molecule of oxygen gas.
The molecular formula of hydrogen shows that there are two molecules of hydrogen in a molecule of hydrogen gas.
What mass of methanol (CH3OH) is produced when 140.1 g of carbon
monoxide reacts with 12.12 g of hydrogen?
CO(g) + 2H2(g) → CH2OH()
A. 160.2g
B. 96.12 g
C. 6.06 g
D. 192.2g
Answer:
B. 96.12 g
Explanation:
To solve this question we must convert each reactant to moles. Using the balanced equation we can find limiting reactant. With moles of limiting reactant we can find the moles of methanol and its mass:
Moles CO -Molar mass: 28.01g/mol-
140.1g CO * (1mol / 28.01g) = 5.0 moles CO
Moles H2 -Molar mass: 2.01g/mol-
12.12g * (1mol / 2.01g) = 6.03 moles H2
For a complete reaction of 5.0 moles of CO are required:
5.0moles CO * (2mol H2 / 1mol CO) = 10.0 moles of H2 are required
As there are just 6.03 moles, H2 is limiting reactant.
The moles of methanol produced are:
6.03 moles H2 * (1mol CH3OH / 2mol H2) = 3.015 moles CH2OH
Mass CH3OH -Molar mass32.04g/mol-:
3.015 moles CH2OH * (32.04g/mol) =
96.6g CH3OH ≈ B. 96.12 g
how many moles are in 54g of sliver
Answer:
0.50 mols Ag
Explanation:
Given the data, we have:
mass= 54g
molar mass of Silver (Ag): 107.8 g/mol
We want moles, we can convert grams > moles using the molar mass as a "bridge" between the 2.
[tex]54g * \frac{1 mol}{107.8 g}= 0.50 mols Ag[/tex]
Keeping an eye on the units, we'll see 54g get cancelled out by 107.8 g/mol and we'll be left with moles of Silver.
Vincent dissolves 6.5 g of bromic acid, HBrO3, to prepare 600.0 mL of solution. Calculate the concentration of the acid Vincent produced.
Answer: The concentration of the acid Vincent produced is 0.083 M.
Explanation:
Given: Mass = 6.5 g
Volume = 600.0 mL (1 mL = 0.001 L) = 0.6 L
Moles is the mass of substance divided by its molar mass. So, moles of bromic acid (molar mass = 128.91 g/mol) are calculated as follows.
[tex]Moles = \frac{mass}{molar mass}\\= \frac{6.5 g}{128.91 g/mol}\\= 0.05 mol[/tex]
Molarity is the number of moles of a substance present in liter of a solution.
Therefore, molarity (concentration) of the given solution is calculated as follows.
[tex]Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.05 mol}{0.6 L}\\= 0.083 M[/tex]
Thus, we can conclude that the concentration of the acid Vincent produced is 0.083 M.
Pollution is any waste product that damages an ecosystem
True or false?
Answer:
True!
Explanation:
Not only products cause pollution, but the smoke from factories, the gas from our cars. Hope this is helpful! ^^
An ion and its parent atom differ in....? 1) All of the options are correct 2) electron configuration. 3) chemical reactivity. 4) number of electrons.
For a reaction, Delta * H ^ 0 = - 75KJ / m * o * l and triangle S^ 0 =-0.081KJ/(K* mol) . At what temperatures is this reaction spontaneous?
Answer:
At temperatures below 924.93K.
Explanation:
Hello there!
In this case, according to the thermodynamic definition of the Gibbs free energy of reaction:
[tex]\Delta G=\Delta H-T\Delta S[/tex]
Now, for us to determine the correct temperature range, we must make ΔG=0 and solve for T:
[tex]T=\frac{\Delta H}{\Delta S} =\frac{-75kJ/mol}{-0.081kJ/mol-K}\\\\T=925.93K[/tex]
Thus at temperatures below 925.93 K we will have an spontaneous reaction (ΔG<0).
Regards!