Answer:
B) the rabies viru
Explanation:
what is exactly equal to the total number of protons and neutrons in an atom?
Answer:
That would be the mass.
Use your knowledge of valence electrons and how they affect bonds to figure out how carbon (Group 14) and oxygen (Group 16)
would be attached to one another. In carbon dioxide (CO2), how is the compound structured? (Use "-" to represent a single
bond and "=" to represent a double bond) (1 point)
C-O-O
O=C-O
C=O-O
O=C=O
Answer: D
Explanation:
O=C=O
Carbon is in group 14 having four valence electrons and oxygen is in group 16 having six valence electrons hence the correct structure of CO2 is O=C=O.
Carbon and oxygen are nonmetals. Nonmetals form compounds by sharing electrons in a covalent bond.Carbon, a group 14 element has four valence electrons while oxygen, a group 16 element has six valence electrons.
Carbon can share four valence electrons with two oxygen atoms in CO2 to form the structure O=C=O. In this way, all the atoms now obey the octet rule.
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helppppppppppppppppp
Answer:
23: 6000560000000
24: 0.0015
25: 200
26: 0.0105
27: 600
28: 4023000
Explanation:
You have to move the decimal the same amount of times as the exponent says.
For example, like with the 6, you move it 2 decimals to the right (since it's positive), and the regular number would be 600.
classify these diatomic molecules as diamagnetic or paramagnetic.
calcium, strontium and barium are all located in the same column of the periodic table. why is that?
Calcium (Ca), strontium (Sr), and barium (Ba) are all located in the same column of the periodic table because they have similar atomic structure and similar chemical properties
Periodic tableFrom the question, we are to determine why calcium (Ca), strontium (Sr) and barium (Ba) are all located in the same column of the periodic table
The periodic table is a tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties.
Elements with similar atomic structure and similar chemical properties appear in the vertical columns. These columns are called groups.
Hence, calcium (Ca), strontium (Sr), and barium (Ba) are all located in the same column of the periodic table because they have similar atomic structure and similar chemical properties
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Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be
classified as a
Answer:
Selenium
adadadadad
Explanation:
if u ask which group
so it is halogen
or u ask which type of matter
then liquid
Polonium has a mass number of 212 and an atomic number of 84. In a balanced nuclear reaction, polonium releases an alpha particle to produce lead. Which option is the atomic number of lead?(1 point)
210
208
80
82
plss help
right answer only
Answer:
D. 82
Explanation:
Answer:
see below
Explanation:
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.
[quizlet: captncrun]
which element has a larger atomic radius than sulfur?
when washing tableware the water temperature should be:
Just need to make sure if this is right
Answer:
yeah think that’s correct
Explanation:
not exactly sure how to explain this, I just know that it’ll prolly just stay the same and not move to any high and low regions of the cell
Which is the best definition of air pressure?
A.the amount of water vapor in the air.
B.the weight of the air pressing on everything in the environment
C.the amount of precipitation in a certain area
D.the type of clouds in the atmosphere
What are epimers?
How are glucose and manose epimers?
Please Help!
Answer:
Epimers are carbohydrates which vary in one position for the placement of the -OH groupExplanation:
they have a specific type of stereoisomers which have multiple stereo center's but differ from one another, they differ from each other by configuring at the c-2" atom . so, they are epimersEnergy is released into the cell by
Answer:
cellular respiration
Explanation:
the mass number for an atom is numerically equal to which quantity
Answer:
The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in an atom is its mass number minus its atomic number.
Explanation:
protons
The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.
A cup of coffee cools to 15 °C from 30 ° C. What is the change in temperature?
Answer:
15° C
Explanation:
30-15=15
checking* 15+15=30 or 15x2=30
PLEASE HELP MEEEEEEEEEEEeeeeeee before mom get home lol anyways..... hi :)
Answer:
GUYS THIS RANDOM GIRL HANNAHJAXON DELETED ALL OF MY ANSWERS AND QUESTIONS ON MY ACCOUNT!!!
Explanation:
How many moles in 5.75 x 1024 atoms of copper (Cu)? (9.55 mol)
Answer:
9.55 moles
Explanation:
How many moles are equivalent to 5.75x1024 atoms of Al? 9.55 moles contain 5.75 x 1024 atoms of Al
Why can groundwater only collect in rock that is porous?
Porous rock has gaps between rock particles that can fill with water.
Porous rock contains different-sized particles.
Porous rock is made of certain types of rock that attract water molecules.
Porous rock contains particles that are very close together.
Answer: Porous rock has gaps between rock particles that can fill with water. but i’m not 100% sure
Explanation:
Answer:
porous rock has gap between rock particles that can fill with water
Which option would be an appropriate model of nuclear fusion?
A adding a drop of water to a glass of water
B sewing one piece of fabric to another
C mashing two marshmallows together
D putting a puzzle together
Mashing two marshmallows together can be an appropriate model to explain nuclear fusion.
Nuclear fusion is the reaction that occurs when two or more light elements combine to form heavier elements with the release of energy.
Nuclear fusion reactions occur mainly in the production of stars and the main-sequence star, The Sun by the fusion of hydrogen nuclei into helium.
Therefore,The following cannot be a model of Nuclear fusion, because they do not follow the basic concept of nuclear fusion which two light nuclei react to form a single heavy nuclei.
Adding a drop of water to a glass of waterSewing one piece of fabric to anotherPutting a puzzle togetherMarshing two marshmallows together can be a good model to explain nuclear fusion because it follows the basic concept of nuclear fusion
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Answer:
mashing two marshmallows together
Explanation:
i've taken the test
1. Why do plant cells have a cell wall in addition to a cell membrane?
2. Think about the function of chloroplasts. Would you expect to find
more chloroplast in the cells of leaves or the roots of a plant?
3.What two cell structures do protists have that bacteria do not?
4. Do all microbes cause disease? Explain
Answer:
Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures.
Explanation:
A major difference between a plant cell and an animal cell is presence of chloroplasts in plant cells. Another key difference between plant and animal cells is the presence of a cell wall in plant cells. Both structures are absent in an animal cells.
The cell wall surrounds the plasma membrane of plant cells. This helps to provide the required tensile strength and protection against mechanical and osmotic stress.
Cell walls also help plants to maintain shape and rigidity.
Answer:
1) Plant cells have a cell wall to strengthen the cell
2) Chloroplasts are the site of photosynthesis (turning light energy in sugar) so there would eb a lot more in the leaves that get sunlight than the roots which are underground and receive no sunlight
3) Mitochondria and nucleus
4) No. Some microorganisms are useful to humans, such as the bacteria that create yoghurt, or fungi such as penicillin which are antibiotics, which help us fight bacterial infections
An element in group 2 will form ionic bonds and with
Answer:
With an element from group 16
Explanation:
Because the elements from group 2 have 2 valence electrons, and the elements from group 16 need to get more 2 electrons to get stable
based on the dosages a patient receives what level of precision should a syringe have to ensure that the patient receives the proper dosage
Answer:
No.
Explanation:
The person giving the dosage should make sure there is a proper dosage. The syringe only tells you how much there is in the syringe.
1.A sample has a mass of 15 g and a volume of 3 mL. Calculate the density.
Answer:
5 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 15 g
volume = 3 mL
We have
[tex]density = \frac{15}{3} = 5 \\ [/tex]
We have the final answer as
5 g/mLHope this helps you.
When a substance is soluble it:
A. can dissolve any amount into the liquid.
B. can dissolve only a specific amount into the liquid, determined by its solubility.
C. can dissolve only a specific amount into the liquid, determined by the liquid's solvent point.
D. can dissolve any amount into the liquid, as long as the liquid is being heated.
When a substance is soluble it can dissolve only a specific amount into the liquid, determined by its solubility. Hence, option B is correct.
What is the solute?A solute is something being dissolved, a solvent is a thing dissolving the item, and the solution is the mixture of the two items.
Solubility is a term used to describe how readily a substance can be dissolved in a solvent to form a solution. Thus, a substance is said to be soluble if it dissolves completely in a solvent and insoluble if it doesn't dissolve or only dissolves partially.
Hence, when a substance is soluble it can dissolve only a specific amount into the liquid, determined by its solubility.
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A block of material has a density of 1.29 g/cm. what is the volume of 190 g in cubic
centimeters?
No units required
Answer:
147.28 cm³
Explanation:
Density = m/V
1.29 g = 190 g/cm3/V
V = 190 g/cm³ : 1.29 g
V = 147.28 cm³
Which phrase describes transmutation?(1 point)
the conversion of an atom of one element into a different element through nuclear changes
the conversion of energy to matter through chemical changes
the conversion of protons to neutrons through nuclear changes
the conversion of one substance to another through chemical changes
Help plss quick
thx
The phrase that describes transmutation is ; ( A ) The conversion of an atom of one element into different element through nuclear changes.
Transmutation is simply the change of an element to another element, transmutation occurs at the nucleus of the atom of an element and this process is initiated through nuclear reaction ( radioactive decay ).
Therefore the conversion of an atom of one element into different element through nuclear changes summarizes the term "transmutation".
Hence we can conclude that the phrase that describes transmutation is the conversion of an atom of one element into different element through nuclear changes.
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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.
Please give me Brainliest. You're Welcome
Could somebody please give me an example of some physical properties for any substance?
Answer:
A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
Explanation:
Can someone solve this question? I'll give brainliest and more points.
Answer:
When a substance undergoes a chemical change it is no longer the same but a burning substance.
Explanation:
That is the correct answer.
Using the periodic table, calculate the number of protons, neutrons, and electrons for Calcium, Argon, and Bromine.(Ca,Ar,Br)
Answer:
Calcium has 20 protons 26 neutrons and 20 electrons.
argon has 18 protons
22 neutrons and 18 electrons
Bromine has 35 protons 44 neutrons and 35 electonrs
Explanation:
good luck with your homework hope I helped
Answer the question below. Use the rubric in the materials for help if needed.
Compare and contrast ionic and covalent bonds by explaining what the electrons do when bonding occurs. Use details to support your answer.
Answer:
..
...
....
Explanation:
hop it helps.....
