Answer:
The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.
The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from Hz to Hz are:
gamma rays
X-rays
ultraviolet radiation
visible light
infrared radiation
radio waves.
The visible light is the very small part of the electromagnetic spectrum that ranges from the to, Visible light is the light that the human eye can see.
Thus, the correct answer is- option d.
Learn more about visible light:
Explanation:
i did this
HELP!! fill in the blank using the word bank please (picture attached).
Which describes an element?
They can combine with other elements to form atoms.
They were all discovered at the same time.
They cannot be broken down any further.
Michelle and john are walking down the street deep in conversation
Is each ion stable? Explain.
Answer:
By satisfying the duet rule or the octet rule, ions are more stable.
Explanation:
Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable.
The octet rule states that an atom is most stable when there are eight electrons in its valence shell. Atoms with less than eight electrons tend to satisfy the duet rule, having two electrons in their valence shell. By satisfying the duet rule or the octet rule, ions are more stable.
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Hello there
i am looking for some quick help on this question thank you.
Liquid B has a mass of 75 g and a volume of 25 ml. What is liquid B's density?
1: .33 g/ml
2: 3 g/ml
3: 75 g
4: 25 ml
i will give brainliest if able to.
if density = m(mass) / v(volume) then the answer would be 3
Which of the following is the smallest number?
100
1
.0035
.0000000000000000000003
Answer:
.0000000000000000000003
Explanation:
Which statement best explains why mass is not conserved in a nuclear change?
Some of the products have less mass than the reactants.
Some of the reactants are not used.
Some of the atoms are lost in the reaction.
Some of the matter is converted to energy.
The statement that best explains why mass is not conserved in a nuclear change is that; "some of the matter is converted to energy".
In a nuclear reaction, mass is converted to energy. This is the energy that is given out when a new nuclide is formed during a nuclear reaction.
Generally, the scheme of a nuclear reaction is; Parent nucleus + Bombarding particle -------> Daughter nuclei + product particles + energy. This energy is obtained when mass is lost from left toi right in the reaction.
Hence, the correct answer is; some of the matter is converted to energy".
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Answer:
Unit 4 Lesson 2:
Energy Release Quick Check
1. 138
2. The conversion of an atom of one element into a different element through nuclear changes.
3. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.
4. 82
5. Some of the matter is converted to energy.
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COMO CREES QUE SE PODRIA SOLUCIONAR LA POBREZA ) SI NO SABEN NO CONTESTEN :( EL QUE ME AYUDE LE DOY CORONA POR FA VOR
Answer:
AUMENTA EL SALARIO MÍNIMO Y CREA MÁS EMPLEOS
Explanation:
Which electron transition emits electromagnetic radiation with the highest energy?
n = 2 to n = 1
n = 6 to n = 2
n = 6 to n = 3
n = 4 to n = 1
Answer:
So, you can say that in a hydrogen atom, an electron located on
n i=2
that absorbs a photon of energy
4.85⋅10−19
J can make the jump to n f=6.
HELP LAST ATTEMPT !?!!
Answer:
111Cd 12.80% stable
Explanation:
Maybe?
Using value of 1.1×10−10 for the Ksp, calculate how many milligrams of Ag2CrO4 will dissolve in 11.5 mL of H2O
Answer:
i think it might be 3.8 milligrams but to be honest i dont know im just trying to help
Explanation:
Using value of 1.1×10−10 for the Ksp, 1.0 milligrams of Ag₂CrO₄ will dissolve in 11.5 mL of H₂O.
What is mass?Mass is defined as the quantity of material that makes up a thing, whereas weight is the force that an object produces. A particle's or an object's mass is a dimensionless number that indicates how much matter is present. Gravity and inertia, which are the two main forces influencing how objects move in space, make mass crucial.
Ag2CrO4 dissociates to form Ag2CrO4 (s). aq 2Ag+ + crO4 (aq)
Ksp = [2Ag+] is an expression for the solubility product constant.
[Ag+] = 2x & [CrO4-] = x 1.1 10 10 = 2[CrO4-] (2x)
2(x) = 4x3 / x = [(1.1×10−10)/4]
1/3 = 3.02 x 10-4 M
Determine the number of CrO4- moles dissolved in 10 ml of water.
Molarity of CrO4- is equal to the number of moles of CrO4- divided by the volume in liters (3.02 x 10-4 M) (10 x 10-3 L)
Number of CrO4- moles equals (3.02 x 10-4)(10 x 10-3) = 3.02 x 10-6 mole.
Number of CrO4- = Number of Ag2CrO4 moles
= 3.02 x 10-6 mole
Ag2CrO4's molar mass = 331.73 g/mole.
3.02 x 10-6 mole of dissolved Ag2CrO4 in water
= 0.0010 g,
= 1.0 milligram.
Thus, using value of 1.1×10−10 for the Ksp, 1.0 milligrams of Ag₂CrO₄ will dissolve in 11.5 mL of H₂O.
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I am the first one to comment, please give me the brainliest <3
Measuring the volume of air near 100°C
Answer:
[tex]1m ^ {3}[/tex]
Explanation:
UwU
A solid is heated to its melting point and the resulting liquid is heated. Choose the graph below that shows these temperature changes.
An image of Earth's layer is above.
Which layer is the most dense?
layer A
layer B
layer C
layer D
Answer:
Layer D
Explanation:
Earth's interior layers are ordered by density. The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere.
Which best describes the type of Bond shown?
A. It is an ionic bond because electrons are being shared
B. It is a covalent bond because electrons are being shared
C. It is an ionic bond because electrons are being transferred
D. It is a covalent bond because electrons are being transferred.
please answer this no links please!!
Based on the nature of the types of chemical bonding, the example illustrates covalent bonding because electrons are shared between the carbon and hydrogen atoms.
Chemical bondingChemical bonding or combination occurs when atoms of elements combine to form products.
Chemical bonding can either be;
ionic bonding orcovalent bondingCovalent bondingCovalent bonding involves a sharing of electrons by the atoms of elements involved.
Since the example shows electrons being shared between carbon and hydrogen atoms, the example illustrates a covalent bonding because electrons are shared between the atoms.
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An element with three valence electrons would most likely be a
A. Metal
B. noble gas
C. non metal
D. metalloid
If an element has three valence electrons, it is most likely a metal.
In the periodic table, metals are found towards the left hand side of the table. Metals have fewer valence electrons than nonmetals. In the periodic table, there are more metallic than nonmetallic elements.
Metals of group 13 typically have three valence electrons. Hence, if an element has three valence electrons, it is most likely a metal of group 13.
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exchanges gases ( O2 and CO2) between the air and the blood
Answer:
Explanation: Hankins is waiting
A student makes a diagram that shows the layers of Earth. The student incorrectly claims that the density of each layer is the same. Which of these accurately describes the
layers of Earth?
The density of Earth's layers increases from the center to the surface,
The density of Earth's layers increases as you move down toward the center.
The mantle is less dense than the layer above it but denser than the layer below it.
The outer core is denser than the layer below it but less dense than the layer above it.
Answer:
B.
Explanation:
How long does it take for a car driving at 10m/s to move 200m?
A.
0.05 seconds
B.
2 seconds
C.
20 seconds
D.
2000 seconds
The time taken by the car driving at 10m/s to move 200m is 20 seconds. The speed of car is 10m/s. Thus option C is correct.
What is speed?Speed is defined as a measurement of the length of time it takes for an object to travel a certain distance.
The SI unit of speed is m/s, and speed is defined as the ratio of distance to time.
A change in speed is an example of acceleration because it is a change in velocity. Acceleration could be for positive or negative. Deceleration is another name for negative acceleration.
There are four types of speed.
Uniform speedVariable speedAverage speedInstantaneous speedSpeed can be expressed as
Speed = Distance / Time
Given, Distance = 200 m
Time = 10 m/s
Speed = 200m / 10m/s
= 20 seconds
Thus, the time taken by the car driving at 10m/s to move 200m is 20 seconds. The speed of car is 10m/s. Thus option C is correct.
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What is the answer with the proper significant figures 7.6+2.401+0.68=
Answer:
10.7
Explanation:
The addition of 7.6 + 2.401 + 0.68 = is 10.681.
According to the addition of sig figs, you want your answer to have the same amount of places, after the decimal point, as the least sig-fig figure.
7.6
2.401
0.68
+
----------
10.681 - Draw a line straight down from the least sig-fig figure (7.6)
So the maximum figure after the decimal point is one. Since 8 is greater than 5, you have to round up from 10.6 to 10.7.
A measure of how much substance is packed into a space
A) Density
B) Mass divided by volume
C) Water
D) Element
Answer:
a
Explanation:
Answer:
A
Explanation:
Density is the amount of space that atoms are compacted in a substance.Apr 25, 2017
Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
Which statement best describes these three components of air?
O Oxygen, nitrogen, and carbon dioxide are all classified as pure substances.
Oxygen, nitrogen, and carbon dioxide cannot react with another substance.
Oxygen, nitrogen, and carbon dioxide are chemically bonded to one another.
O Oxygen, nitrogen, and carbon dioxide can be classified as elements.
idio
Answer:
option A
Explanation:
hope it helps
Plot the rate curved for the
Information Provided below and
Identity where the reaction is
Complete and peak of the reaction
Time in minutes 12345678
o
Volume of gas 0 5 10 15 20 25 30 30 35
Answer:
he combustion of ethane (C2H6) is represented by the equation: 2C2H6(g) + 7O2(g) 4CO2(g) + 6H2O(l). In this reaction: (a) the rate of consumption of ethane ...
Explanation:
he combustion of ethane (C2H6) is represented by the equation: 2C2H6(g) + 7O2(g) 4CO2(g) + 6H2O(l). In this reaction: (a) the rate of consumption of ethane ...
How do you define note-taking and how do you take notes to help you understand the material?
Answer:
Note-taking is simply jotting down the steps to solve specific problems, or listing the resources that can help you when learning something new. In order to take effective notes that can help you understand the material, you can use techniques like Cornell Notes which help you to organize your writing in a way that makes it referable when stuck doing independent work.
Calculate the mass percent of H in C3H8O3.
%
Answer:
because of it being that you have inferno dragon plsss
Suppose a scientist wants to test a new drug to fight the flu. The scientist injects the drug into 3 people with the flu. The scientist injects a harmless solution into three other people with the flu. In this experiment, what is the variable group and what is the control group?
Answer:
the people injected with the drug are the variable group while the people injected with the harmless solution are the control group
HELP!! pick the correct answer please. picture attached
Answer:
A solution, in science, refers to a type of mixture involving two or more substances. Specifically, the solution definition refers to a type of homogeneous mixture - i.e., a mixture that has a uniform composition and its individual components cannot be distinguished
Answer:
C.Concetrated solution
Explanation:
hope it's help.
CFCs (or halocarbons) are ____ - _____ (range) times as powerful a GHG as CO2.
A) 1,000 - 15,000
B) 2,000 - 25,000
C) 5,000 - 65,000
D) 500 - 5,000
CFCs are 1000-15000 times powerful as compared to greenhouse gas such as CO2.
Chlorofluorocarbons are present in less amount or less abundant than carbon dioxide gas in the atmosphere but they are 10,000 times more powerful as a greenhouse gas.
These CFCS gases can remain in the atmosphere for more than 45 to 100 years. CFCS gases greatly damaged the ozone layer by reacting with it that leads to increase in the diseases such as skin cancer so we can conclude that CFCs are more powerful as compared to carbondioxide gas.
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Light-DEPENDENT reactions do NOT involve which of the following?
A. sunlight
B. chlorophyll
C. water
D. carbon dioxide
Answer:
The answer to your question is D. carbon dioxide
Explanation:
Light-DEPENDENT → The light-dependent reactions convert light energy into chemical energy.
