Answer:
heating :))))))))))))))
Explanation:
the same as the last answer i posted... sorry it just came up in my recommended questions to answer
a mutation occurs in a gene causing a pea plant produce 75% fewer leaves. this would be considered what kind of mutation?
a. positive
b. negative
c. neutral .
Answer:
negative
Explanation:
There is decrease of a character in the new progeny so it is negative mutation
Negative kind of mutation is occur in a gene causing a pea plant produce 75% fewer leaves.
What is mutation?If any chemical or physical alteration is occured due to change in the sequence of nucleotide in the DNA is known as mutation.
In plants mutation is natural phenomenon and as a result of mutation, different colors or shades on leaves and flowers are observed. Many other alteration is also noticed which may get normal in future. In the question it is given that due to mutation, pea plant produces 75% less leaves than the normal production.
Hence, in the pea plant negative mutation occurs.
To learn more about mutation, visit the below link:
https://brainly.com/question/17031191
Along each row of the periodic table,
A.
atomic mass increases from left to right.
B.
atomic mass is the same for all elements in the row.
C.
atomic mass changes in no set pattern.
D.
atomic mass decreases from left to right.
help with this question plsss
Answer:
The atomic number tells us how many protons and electrons are in the element we are looking at.
as the elements in period 2 of the periodic table are considered in succession from left to right , there is a decrease in atomic radius with increasing atomic number. this may best be explained by the fact that the--
Answer:
electons are added moving to the right
Explanation:
The decrease in atomic radius with increasing atomic number is best explained by the number of protons increasing and the number of shells of electrons remaining the same. Therefore, option (A) is correct.
What is the atomic radius?The atomic radius of an atom can be described as the size of the atom, which is generally the mean distance from the center of the nucleus to the outermost electron of an atom.
In the periodic table, as you move from left to right, the atomic number of elements in period 2 will continue to increase, because there is an increase in the number of protons which causes an increase in positive charge carried by each element while the number of shells of the electrons remains constant.
Therefore the Elements will attract more negative charges to themselves as we move from left to right in the period. As the atomic number of elements increases, there will be a decrease in the atomic radius of the elements.
Hence, the decrease in atomic radius with increasing atomic number is explained by the number of protons increasing and the number of shells of electrons in an atom remaining the same.
Learn more about atomic radius, here:
brainly.com/question/18095927
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Your question is incomplete most probably the complete question was,
As the elements in Period 2 of the Periodic Table are considered in succession from left to right, there is a decrease in atomic radius with increasing atomic number. This may best be explained by the fact that the
a. number of protons increases, and the number of shells of electrons remains the same
b. number of protons increases, and the number of shells of electrons increases
c. number of protons decreases, and the number of shells of electrons remains the same
d. number of protons decreases, and the number of shells of electrons increases
An element identity is defined by its number of
A.protons
B.neutrons
C.electrons
D.orbitals
Answer:
Correct answer is A) Protons
Explanation:
I got it right on my test.
Can i get brainlyest
An atom contains 11 electrons. If a 12th electron were added to the atom, which energy level would it be placed in?
Answer:The energy level is three
Explanation:
LOL i just know it
Answer: it is 3
Explanation:
just trust me
All energy originates from the ________.
A. Biomass
B. Sun
C. Chloroplast
D. Mitochondria
Answer:
Sun is the answer!!!!!!
Which of the following best describes compounds?
А
They can only be separated chemically.
B
They are always liquid at room temperature.
С
They contain the atoms of just one element.
D
They have the same peperties as their elements.
Fossil records often show extinct organisms that are similar to current species.
These species are
often_[blank] modern species.
Which option correctly completes the last sentence?
A.the future versions of
B.unrelated to
C.ancestors of
D.exactly the same as
Answer:
C. ancestors of
Explanation:
The species found as extinct in the fossil records are often times the ancestors of modern species.
Based on the concept of evolution, organisms formed from their earlier forms. A concise trace and study of the history of organism often shows similarity in functions and properties between present day organisms and their ancestors.C5H12 + 8O2 → 5 CO2 + 6 H20
How many moles of oxygen are required to make 2.5L of water?(with work to back up)
Answer: 65
Explanation: Cause il
Is rubber band stretching physical or chemical
Answer:
physical
Explanation:
this is a physical action to create a change. does not involve chemicals or elements
Answer:
[tex]\boxed {\boxed {\sf Physical \ change}}[/tex]
Explanation:
A chemical change, as the name suggests, must result from a change in the chemical makeup and new substances are produced. A very common example is metal rusting.
A physical change can be observed without a change in chemical composition. No new substances are produces. Ripping paper and an ice cube melting are physical changes.
A rubber band stretching is a physical change. No new substances are made and the chemical makeup remains the same.
Identify the assumptions made as part of Dalton’s atomic theory.
Answer:
Matter has particles called atoms.
They are indestructible and unchangeable.
When chemical reactions occur, they combine.
Categorized by weight of atoms.
Explanation:
Answer:
Matter has particles called atoms. They are indestructible and unchangeable. When chemical reactions occur, they combine.
Explanation:
Which type of star is likely to emit the most energy into space?
Explanation:
The Sun is Earth’s major source of energy, yet the planet only receives a small portion of its energy and the Sun is just an ordinary star. Many stars produce much more energy than the Sun
When chemical W is added to a liquid, the chemical breaks down into substances X, Y, and Z. It is not possible to break down substances X, Y, and Z into simpler substances. What conclusion is supported by this evidence?
Chemical W is an element.
Chemical W is a pure substance.
Substances X, Y, and Z are elements.
Substances X, Y, and Z are compounds.
Answer:
Chemical W is a pure substance
Explanation:
We can conclude that the substance W is a pure substance. Matter on a broad basis can be classified as either pure or distinct substance and impure substances (mixtures).
Pure substances are elements and compounds. All the parts are homogenous. They have a definite composition. They cannot be split by physical means.So, since we can only split the substance into elements X, Y and Z with no simpler units, W is a compound and a pure substance.
What is the molecular geometry for POI3?
Answer:
The correct answer is tetrahedral
Explanation:
Molecular geometry can be described as the three dimensional structure of atoms in a molecule. It is usually preferable to draw out the lewis dot structure of a compound before using that to determine the molecular geometry of the compound. The lewis dot structure and the tetrahedral structure of phosphoryl iodide (POI₃) are in the attachment below.
As it can be seen in the attachment, the molecular geometry of phosphoryl iodide is tetrahedral.
Calculate the mass of fe(no3)3 that is measured to prepare 500.0 mL of a 0.175mol/L solution.
Answer:
21.3g
Explanation:
The formula of the compound is;
Fe(NO₃)₃
Given:
volume = 500mL = 0.5L
concentration = 0.175mol/L
Unknown:
Mass of Fe(NO₃)₃ measured = ?
Solution:
To solve this problem, find the number of moles first;
Number of moles of Fe(NO₃)₃ = concentration x volume
So;
Number of moles = 0.175 x 0.5 = 0.088mol
Now to find the mass;
Mass = number of moles x molar mass
Molar mass of Fe(NO₃)₃ = 55.8 + 3[14 + 3(16)]
Molar mass of Fe(NO₃)₃ = 55.8 + 3(62) = 241.8g/mol
Mass = 0.088mol x 241.8g/mol = 21.3g
Luisa has two older brothers and a younger sister. She had been learning about how to describe the ages of rocks. After thinking about it, she realized she could compare people's positions in her family in the same way that scientists compare rocks. Which geology term would describe the way Luisa compares the positions of people in her family?
a. absolute age
b. rock layers
c. relative age
d. superposition
Answer:
c. relative age
Explanation:
Relative age is a method of describing the age of rocks based on their order of appearance in the geologic column.
Events are denoted by their position in the column.
The premise of most of the assumptions used relative age determination is based on stratigraphic laws. Absolute age gives numeric ages to rocks.Since Luisa is comparing the age of people based on their position in her family, she is using the concept of relative dating.
Please help actual answer
Answer:
Explanation:
E.92
Hay are you single how old are you want to be my gf
A _____ is flat land that is higher than the land around it.
A. plateau
B. plain
C. valley
D. canyon
Answer:
A
Explanation:
Answer:b
Explanation:
The pigment inside chloroplasts that allows photosynthesis to occur in plant cells what is it chlorine, mitochondria, chlorophyll or cytoplasm
Answer:
Chlorophyll
Explanation:
This is the green pigment that allows photosynthesis to occur
Mitochondria: cell energy
Cytoplasm: what fills the space between organelles in a cell
Chlorine: not sure but you they put it in pools
help me please i love you so much yes
Answer: When this occurs, the particles bind with the chemicals and form larger particles, the clear water on top will pass through filters of varying compositions (sand.
Explanation: I hoped that helped.
I’m probably going to get this deleted but for some reason i needed people to see this so you’re welcome
Answer:
i think its a wold with kids drinking its milk
Explanation:
Identify the type of reaction: 2Ag + Cl2 --> 2AgCl
A. decomposition
B. double replacement
C. single replacement
D. combustion
E. synthesis
Answer:
The answer is E ( synthesis)
Kernels of corn are heated and become popcorn. Why is this a chemical change?
Answer:
When popcorn is popped, liquid inside the kernel is changed to steam. Pressure from the steam builds up inside the kernel. When the pressure reached a critical stage the kernel pops turning itself inside out. This is a physical change.
Explanation:
3. Define isobar 75 points
Answer:
1.
meteorology A line drawn on a map or chart connecting places of equal or constant pressure.
2.
nuclear physics Either of two nuclides of different elements having the same mass number.
3.
thermodynamics A set of points or conditions at constant pressure.
Answer:
a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.
Explanation:
What is one advantage of using fossil fuels ?
Answer:
Advantages of fossil fuels:
Explanation:
One advantage of fossil fuels is that they are easy to find, they are also pretty efficient despite the pollution it causes, and lastly it provides tons of economic prosperity to many countries.
How is electronegativity related to covalent bonding?
Atoms must have similar electronegativities in order to share electrons in a covalent bond.
Atoms must have very different electronegativities in order to transfer electrons in a covalent bond.
Atoms must have similar electronegativities in order to transfer electrons in a covalent bond.
Atoms must have very different electronegativities in order to share electrons in a covalent bond.
Answer:
Atoms must have similar electronegativities in order to share electrons in a covalent bond.
Explanation:
Covalent bonding is one of the bondings that occurs between the atoms of elements. It is the bonding in which atoms share their valence electrons with one another. However, the ELECTRONEGATIVITY, which is the ability of an atom to be attracted to electrons play a major role in the formation of covalent bonds.
When atoms of different electronegativities combine, the more electronegative atom pulls more electrons towards itself, hence, an IONIC bond is formed. However, when the electronegativities of the atoms are similar, the sharing of their electrons becomes stronger. Hence, ATOMS MUST HAVE SIMILAR ELECTRONEGATIVITIES in order to share electrons in a covalent bond.
Answer:
A
Explanation:
Atoms must have similar electronegativities in order to share electrons in a covalent bond.
Most polyatomic ions will only contain
a. metal atoms
b. metal and non-metal atoms
c. neutral atoms
d. non-metal atom
Explanation:
oxygen and are negatively charged anions because the oxygen atoms attract electrons. Ammonium is one of the few positively charged polyatomic ions or cations and doesn't contain oxygen.
Answer:
non metal atoms
Explanation:
Lincoln learning test
Which of the following statements best defines MATTER?*
a. species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties
b. the smallest particle of an element
c. a material formed by chemically bonding two or more chemical elements
d. the substance, or substances, of which any physical object is composed
e. a substance that cannot be chemically broken down into simpler substances
please this is timed
Please answer this question for me!
Answer:
i can send u all of the bio stuff i have maybe it will help
Explanation:
