Answer:
sentence B.
Explanation:
The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. Therefore, the atomic radius increases as the group and energy levels increase.
Answer: B
Explanation: I just took it trust me and keep up the work
True or False: Plants don't have brains, but they still adapt to their environments.
Answer:
True
Explanation:
I just took that last year, and got a100%
True, Plants don't have brains, but they still adapt to their environments.
What is adaptation?Adaptation is a process where they are changing their nature to suit the environment.
We have seen that plants do adaptation according to the environment, as in the summer season their leaves are hanging down but in the rainy season they show blossoms and green leaves. So, according to the environment for the survival and reproduction they adapt their body.
Hence, plants have no brains, but they still adapt.
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Which is the first step that geologists must do to compare rock layers at distant locations?
find the absolute age of rocks at both locations
compare a layer at one location to layers at other locations
identify index fossils in one or more layers at one location
collect fossils from different locations to study the organisms’ lifestyles
Answer: Comparing rock layers in distant places can be a challenge for geologists since these layers may have different environmental factors that caused different transformations in them.
Therefore, when it is necessary to establish a comparison between layers of rocks in different ligands, geologists must establish steps to make an efficient comparison and have results consistent with reality. To do this, they must first compare a layer in one location with layers in other locations, assign relative age to a layer in one location, and identify index fossils in one or more layers in one location.
Answer:
C
Explanation:
Which of the following terms best describes an atom which is chemically unreactive?
A static
B full
C satisfied
D invert
Option D is the correct alternative.
We have a chemically unreactive element.
We have to determine which term best describes this atom.
What is Reactivity ?Reactivity in chemistry is the impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials.
According to the question -
An atom that that does not react with the other atoms belongs to those elements which are chemically unreactive or inert elements. The reason behind their inertness is their completely filled outermost shell which can accommodate a maximum of 8 electrons which is as shown by their electronic configuration - 1s²2s²2p⁶. Hence, they are highly stable and don't react with other elements. Ex - Helium, Argon, Neon etc.
Hence, Option D is the correct alternative.
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What cause a earthquake
Answer:
Sudden motions in Earths mantle causeing the crust to shift.
Explanation:
What is the molarity of a solution prepared by diluting 43.72 ml of 1.005 M aqueous K2CR2O7 to 500 ml
Answer:
43.72
Explanation:
that is the answer hope u liked it and I did this already along time ago
The molarity of the solution will be "0.088 M".
Given values are:
Volume,
[tex]V_1 = 43.72 \ ml[/tex][tex]V_2 = 500 \ ml[/tex]Molarity,
[tex]M_1 = 1.005 \ M[/tex][tex]M_2 =?[/tex]By using the Dilution principle, we get
→ [tex]M_2 = \frac{M_1 V_1}{V_2}[/tex]
By substituting the given values, we get
→ [tex]=\frac{1.005\times 43.72}{500}[/tex]
→ [tex]= \frac{ 43.9586}{500}[/tex]
→ [tex]= 0.088 \ M[/tex]
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The element is
sulfur
. This can be determined by looking at the number of
protons
. The element has a valence shell of
16
and
6
valence electrons.
Answer:
This can be determined by looking at the number of protons.
Explanation:
The atomic number which is the number of protons is the best indicator of what an element is.
Based on the number of protons in an atom, elements are arranged in a definite grouping on the periodic table.
This because, atoms do not readily give off their protons so, it is a good measure of the type of atom one might be dealing with.
C3H5(NO3)3
How many atoms of oxygen are there?
Answer: 6
Explanation:
Mark brainliest plzzz if correct
In C₃H₅( NO₃ )₃ there are total six number of oxygen atoms are present and three atoms of carbon, 5 atoms of hydrogen and 3 atoms of nitrogen present.
What is oxygen ?The chemical element with the atomic number 8 and symbol O is called oxygen. It belongs to the periodic table's chalcogen group, is a very reactive nonmetal, and an oxidizing agent that easily produces oxides with most elements as well as other compounds.
Dioxygen is the name given to the colorless, odorless, and tasteless gas that is oxygen at standard pressure and temperature.
Chemical elements are substances that only contain one kind of atom, such as oxygen. Since oxygen has an atomic number of 8 and the official chemical symbol O, an oxygen atom has eight protons in its nucleus. At room temperature, oxygen is a gas that has no flavor, color, or odor.
Thus, In C₃H₅( NO₃ )₃ there are total six number of oxygen atoms are present.
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HELPPP OMG THIS IS SO HARD ITS FOR SCIENCE LOL
Answer:
The nucleus of the atom contains two subatomic particles, the protons which are positively (+) charged and the neutrons which are neutral (no charge).
Explanation:
A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results in degrees Celsius are shown here. What was the change in temperature resulting from this heat transfer in degrees Celsius?
Answer:
A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results in degrees Celsius are shown here. ... Solar energy warming a room.
Explanation:The relationship between the temperature of a system and the total energy of the ... Identical containers, made of different materials, were filled with hot water, ... Which of the following is evidence of energy transfer resulting from the change in the ... cube was monitored for 30 minutes and the results graphed as shown here.
There are three methods that thermal energy can be transferred: conduction, convection, and radiation. Conduction is the transfer of heat energy between adjacent molecules that are in touch with one another.
What is the Thermal energy?A table was set with a container of hot water. It released some of its thermal energy onto the surrounding area. Here are the findings in degrees Celsius. An area is warmed by solar energy.
The link between a system's temperature and total energy in the system Hot water was placed in identical containers made of various materials. Which of the following best illustrates how the 30-minute monitoring of the cube led to an energy transfer.
The surface area, volume, material, and kind of the surface the object is in touch with are all factors that affect how quickly an object transfers energy by heating. The pace at which heat is transmitted increases with the magnitude of the temperature difference between a body and its surroundings.
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Use the equation below to solve the problem that follows.
2H2 (g) + O2 (g) → 2H2O (g)
When David reacts 13.8 grams of hydrogen gas with excess oxygen, 87.0 grams of water are formed. Calculate his percent yield of water.
Im very loss with this question
Percent yield of water : 70%
Further explanationReaction
2H₂ (g) + O₂ (g) → 2H₂O (g)
mol H₂(MW= 2 g/mol) :
[tex]\tt \dfrac{13.8~g}{2~g/mol}=6.9~mol[/tex]
mol H₂O = mol H₂ = 6.9
mass H₂O(theoretical) :
[tex]\tt 6.9\times 18~g/mol=124.2~g[/tex]
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{87}{124.2}\times 100\%=70\%[/tex]
Fossils of sea creatures have been found near the top of Mount Everest (8848m above the sea level). How do you think they could have got there?
Explanation:
The fossils can be found on top of mount Everest due to regional uplift of the crust.
Mount Everest is located a along a convergent margin between two tectonic plate. Due to similarity in density between the two margins, when they collide, there is tectonic build up.
Sedimentary rock layers originally at sea levels are uplifted to those tower peaks as the plate continues to grind against each other.
Most sedimentary rocks contains fossils. As the grinding continues, the uplift and deformation continues.
the following body systems is responsible for releasing waste?
Answer:
the urinary system??
Explanation:
Elements that are generally shiny when smooth and clean.
Jai was measuring the radioactivity of different radioactive isotopes. Isotope A had a starting radioactive level of 50 g, and after 4 days it measured at 30 g. Isotope B had a starting radioactive level of 75 g, and after 4 days it measured at 25 g. Which best explains the isotopes?
Isotope A has a shorter half-life than Isotope B.
Isotope A has a longer half-life than Isotope B.
Isotope A has half the half-life of Isotope B.
Isotope A has twice the half-life of Isotope B.
Answer:
b
Explanation:
I did the test mark the brianlyes byyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
Answer:
Its the second one (B)
Explanation:
Marki the person that answerd first brainliest :)
This is a science question.
What is the acceleration of this helicopter?
Answer:
7m/s
Explanation:
Is the acceleration of the helicopter
Explain the relationship between protons and ionization energy
Need anwser pls. Hurry!!!!! Please hurry up.
Hurry.
The top layer of a flat lying sedimentary rock is the…
most eroded
most under formed
oldest
youngest
youngest
hope this helps anyone<3
Answer:
The answer is youngest.
Explanation:
If earth was a hard boiled egg,which part of earth would the egg white represent?
Answer:
The egg white will represent the outer layer which is the we are located on!
Explanation:
What term is used for the electrons in the outermost shell or energy level
Answer:
Valence Electrons
Explanation:
Answer:
Valence
Explanation:
The outermost shell are the valence electrons
why is it difficult to accurately predict leads most common isotope?
Lead isotopes to tend to correspond to the mass number of the element next to lead in the periodic table.
Lead tends to end most of the decay series of elements. This makes lead isotopes to be very many and its important to discover the most stable of them all.
However, the mass number of most of these isotopes of lead to tend to correspond to the mass number of the element next to lead in the periodic table hence, it becomes difficult to exactly predict the common isotope of lead.
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Calculate the number of moles in each of the following masses.
1. 0.039 g of palladium
2. 8200 g of iron
Calculate the mass in grams of each of the following amounts:
3. 1.002 mol of chromium
4. 550 mol of aluminum
Calculate the number of atoms in each of the following amounts
5. 17.0 mol of germanium
Answer:
1. 3.7 * 10^-4 mol Pd
2. 146.8 mol Fe (or 150 mol Fe if sig fig are required)
3. 52.10 g Cr
4. 14839 g Al (or 15000 g Al if sig fig are required)
5. 1.02 * 10^25 atoms Ge
Explanation:
Explain What is an elementary reaction and how is it related to a reaction mechanism
Answer:
The sequence of individual steps, or elementary reactions, by which reactants are converted into products during the course of a reaction is called the reaction mechanism. The overall rate of a reaction is determined by the rate of the slowest step, called the rate-determining step.
Explanation:
need help asap!!!!
will mark brainliest!!!
We can verify the properties as follows;
1) Sour taste - Put some soda on your tongue
2) Corrode metals - Put a little soda on a clean metal surface
3) Effect on Litmus paper - Dip a blue litmus paper in soda
4) Electrolysis - Add two electrodes to soda and connect a battery.
Does Soda show acidic properties?Soda, specifically carbonated beverages like cola or soda pop, typically exhibits acidic properties. The acidity of soda is primarily due to the presence of carbonic acid (H₂CO₃), which forms when carbon dioxide gas (CO₂) dissolves in water.
When carbon dioxide is dissolved in water under high pressure, it forms carbonic acid through the following reaction:
CO₂ + H₂O ⇌ H₂CO₃
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The study of fossil mammals is:
micropaleontology
invertebrate paleontology
vertebrate paleontology
paleobotany
these are the chocies
Answer:
The study of fossil mammals comes under vertebrate paleontology
(aka vertebrate paleontology)
Answer:
The study of fossil mammals comes under vertebrate paleontology.
Explanation:
Paleontology is the study of fossils which tries to explain the evolution of organisms, their environment and interactions with each other. The various sub divisions of paleontology are vertebrate paleontology, invertebrate paleontology , micropaleontology, paleobotany, palynology etc.
The study of vertebrate fossils, from primitive fishes to the immediate ancestors of modern mammals is known as vertebrate paleontology. Invertebrate paleontology deals with the study of invertebrate animal fossils, such as molluscs, echinoderms, arthropods and annelid worms. Paleobotany studies fossil plants which includes the study of fossil algae and fungi in addition to land plants. Micropaleontology is the study of microscopic fossil organisms, regardless of the group to which they belong.
_________________________________________________________
Brainliest? I just want to move up a level in Brainly, so please. Lol not trying to sound so desperate.
What is one way land helps reduce the force of hurricane as it moves inland
Answer:
because they are fueled by evaporation from warm ocean water, which dry land surfaces do not provide.
Explanation:
Answer: Other person was wrong correct answer is Land filters the water forced up from the sea by the wind :)
Explanation:
PLS HELP
True or False: Water molecules, as a liquid, are very spread apart because of their attractions for one another. *
Give the IUPAC name:
Answer:
hope the answer helps you
Explanation:
3 ethyl 2 hexene
plzz give me brainliest
By the IUPAC Naming Convention followed by every chemical standards, the structure from the question is named as 4,4-dimethyl heptane.
IUPAC Stands for International Union of Pure and Applied Chemistry.This organisation issued some standards for naming any chemical components that is followed world wide.
According to the IUPAC Standards:
First of all we have to identify the longest carbon chain which is an alkane group according to this question.As a result of 7 carbon linked with single bonds it will be named heptane.Now moving to the other parts:
[tex]-CH3[/tex] is termed as methyl
As the both the methyl group( [tex]-CH3[/tex] ) is linked with the fourth carbon the numbering is 4 for methyl.So,the IUPAC name of this compound in the image is 4,4-dimethyl heptane.
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GIVING BRAINLY, 5 STARS, FOLLOW AND HEARTS
as majority of substances heat up, they:
Answer:
Expand
Explanation:
When you heat up a substance it expands
What are isotopes?
A.) Atoms of the same element that have a different number of protons
B.) Atoms of the same element that have a different number of neutrons
C.) Atoms of different elements that have the same number of neutrons
D.) Atoms that are unstable
Answer:
B
Explanation:
Answer:
B. ATOMS OF THE SAME ELEMENT THAT HAVE A DIFFERENT NUMBER OF NUETRONS
Explanation:
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
