Answer:
Diagram of the nuclear composition and electron configuration of an atom of barium-138 (atomic number: 56), the most common isotope of this element. The nucleus consists of 56 protons (red) and 82 neutrons (blue).
what are electron configurations?
Answer:
In atomic physics and quantum chemistry , the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6, using the notation explained below.
Explanation:
i found it on google
Answer:
To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block.
Explanation:
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.
Sodium and Chlorine are both elements,
so the only contain one type of atom.
Is this true or false?
True
Answer:
False
Explanation:
Cases of smallpox were very rare worldwide by 1980. Which most likely explains this? A. an increase in disease education B. a decrease in world travel C. an increase in number of vaccinations of young children D. a decrease in regulations on food preparation
Answer:
C.
Explanation:
The main reason for this decrease is an increase in the number of vaccinations of young children. The smallpox vaccine which was created in 1796 completely allows individuals to easily and quickly fight off the smallpox disease if they were to get it. By being able to fight the disease quickly and effectively it provides less time for the disease to affect another individual. Therefore, causing cases to decrease and become very rare as time goes on.
Rocks that originated from the liquid phase are classified as
rocks.
Answer:
igneous rocks
Explanation:
igneus rocks are sometimes considered primary rocks because they crystallize from a liquid
Water and chemical elements move through cycles called biogeochemical cycles. Select the best way to explain biogeochemical cycles. a. When chemicals move from the atmosphere to a living organism. b. When a chemical moves from an organism to the atmosphere then back to an organism. c. When organisms move from an organism to the atmosphere then back to an organism.
Answer:
When a chemical moves from an organism to the atmosphere then back to an organism.
Explanation:
If we look at it closely, geology and chemistry play major roles in the process of movement and recycling of inorganic matter between living organisms and their environment. This has been called the biogeochemical cycle.
Biogeochemical cycles involve movement of chemical elements among the biotic and abiotic components of the environment; from atmosphere to land to sea, and from soils to plants.
Please help it’s due today I will give brainliest
1st and 4th options are suitable answers, as these 2 changes are not exactly physical changes as it cant return back to original form and as well as its not cooling, so I feel its 1st and 4th options
Write in the name of the molecular geometry for each molecule described below.
A molecule with two atoms and no lone pairs around the central atom has a shape.
A molecule with four atoms and no lone pairs around the central atom has a shape.
A molecule that has two atoms and two lone pairs around the central atom has a shape.
A molecule that has five atoms and no lone pairs around the central atom has a shape.
Answer:
linear
tetrahedral
bent
trigonal-bipyramidal
Explanation:
i just did it one edg
2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles. The top angle of the triangle is 47 degrees. The exterior angle created by the right side of the triangle and the top horizontal line is x degrees. The bottom left angle of the triangle is y degrees. The exterior angle of the bottom right angle is z degrees above the horizontal line and 63 degrees below. Which statements about the diagram are true? Select three options. x = 63 y = 47 z = 117 x + y = 180 x + z = 180
Answer:
x = 63
z = 117
x + z = 180
Explanation:
edg 2020
Answer:
Explanation:
c
How much does a football weigh?
Answer:
16 oz
Explanation:
please mark as brainlist answers
Why is change good for an
ecosystem?
Answer:
it helps the area develop and help the animals adapt
Explanation:
im new so i hope this helps
Which interaction produces dispersive forces by creating temporary dipoles that induce dipoles in other molecules?
a. dipole-dipole
b. hydrogen bonds
c. dipole-induced dipole
d. induced dipole-induced dipole
Answer:
The answer is d. induced dipole-induced dipole
Explanation:
I did the test.
Answer:
D: induced dipole-induced dipole
Explanation:
why is the heating loop in the electric kettle at the bottom of the kettle?
Answer:
The heating element is near the bottom of the kettle because of the way it heats up the water. The water is heated through the flow of electricity meeting resistance in the form of the element.
Explanation:
State two function of blood in our
body?
Answer:
transporting oxygen and nutrients to the lungs and tissues
forming blood clots to prevent excess blood loss
carrying cells and antibodies that fight infection
Explanation:
.......(◍•ᴗ•◍).......
remical Reactions 8.P.13 1 8 of 40
Which of the following is a correctly written chemical equation that demonstrates the conservation of mass?
O A H2 + O2 + H2O
O B. Mg + HCl + H2 + MgCl2
C. KC 103 → KCl + O2
D. H2O + CO2 + H2CO3
Answer:
H₂O + CO₂ → H₂CO₃
Option D is correct.
Law of conservation of mass:
According to this law, mass can neither be created nor destroyed in a chemical equation.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Now we will apply this law to given chemical equations:
A) H₂ + O₂ → H₂O
There are two H and two O atoms present on left side while on right side only one O and two H atoms are present so mass in not conserved. This option is incorrect.
B) Mg + HCl → H₂ + MgCl₂
In this equation one Mg, one H and one Cl atoms are present on left side of equation while on right side two H, one Mg and two chlorine atoms are present. This equation also not follow the law of conservation of mass.
C) KClO₃ → KCl + O₂
There are one K, one Cl and three O atoms are present on left side of equation while on right side one K one Cl and two oxygen atoms are present. This equation also not following the law of conservation of mass.
D) H₂O + CO₂ → H₂CO₃
There are two hydrogen, one carbon and three oxygen atoms are present on both side of equation thus, mass remain conserved. This option is correct.
is copper metal mixed with water an:
a) element
b) compound
c) heterogeneous mixture
d) homogeneous mixture
Answer:
I believe it is c or d I'm sorry I didn't give you one but I know it is not a or b
The mass of a block is 12 g and the volume is 6 ml. Calculate the density of the block. (science)
Answer:
The answer is 2.0 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 12 g
volume = 6 mL
We have
[tex]density = \frac{12}{6} \\ [/tex]
We have the final answer as
2.0 g/mLHope this helps you
Answer:
2.0 G/ML
Explanation:
A student performs an experiment to study how sound waves are transmitted by placing a ringing buzzer inside a bell jar and sealing the jar. The student then connects the bell jar to a vacuum pump to remove the air from inside of the jar. The table shows the student’s observations before and after removing the air from the bell jar.
What can be concluded from the experiment?
A. Sound waves are transverse waves.
B. Sound waves do not transmit through material mediums.
C. Sound waves do not carry energy when they are transmitted.
D. Sound waves transfer energy through the vibration of particles in mediums.
Answer:
D. Sound waves transfer energy through the vibration of particles in mediums.
Explanation:
It can be concluded from the experiment that sound waves will only propagate through vibration of particles in mediums.
The particles of the medium is the air.
This type of wave is called a mechanical wave. A mechanical wave is one that requires material medium for their propagation.Option A ; Sound waves are transverse waves; while this might be true or not, we cannot ascertain that through this experiment described.
Option B: this negates the conclusion that should be drawn from the experiment.
Option C: we cannot draw this sort of conclusion from such an experiment as this.
Therefore, the right choice is that, sound waves transfer energy through the vibration of particles in mediums.
A teacher puts two tablets in a glass of water. The teacher
stirs the water with a spoon until the tablets start to bubble.
Which of the following is LESS dense than water?
This question is incomplete because the options are missing; here are the options:
Which of the following is LESS dense than water?
The spoon
The glass
The tablets
The bubbles
The correct answer to this question is The bubbles
Explanation:
In general, the density of materials and substances affects their buoyancy. This implies in water less dense materials will float and those with higher density will sink. In the situation presented, the only element that is less dense than water are bubbles; this is shown by the movement of the bubbles as these originate in the bottom of the glass of water but they rise to the surface, which shows they are less dense than water.
Answer:
the bubbles
Explanation:
A chemist is trying to classify an unknown substance as either a metal or nonmetal. What question should the chemist use to help classify the material?
A. Does the material feel hard to the
touch?
B. Does the material feel rough or smooth?
C. Is the material a good conductor or a poor conductor?
D. Will the material float in water?
Please Help me!!!
Answer:
c
Explanation:
metals are good conductors, while non metals are not good conductors
In which way are sugars usually transported throughout a pine tree?
Answer:
through the tree's fibers
Explanation:
the tree's leaves produce sugar that is transported through the tree's fibers. Sap also contributes means of transportation for these sugars.
Which element has the greatest average atomic mass?
Answer:
Oganesson is the number 118 the largest
3. A sample of tin has a volume of 9.0 cm. What is the mass of this sample?
The mass = 65.79 g
Further explanationDensity is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density
The unit of density can be expressed in g/cm³ or kg/m³
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
To find its mass, we can search the density of tin on the web
the density of tin : 7.31 g/cc
cc=ml=cm³
So the mass :
[tex]\tt mass=\rho\times V\\\\mass=7.31\times 9\\\\mass=65.79~g[/tex]
If the input force applied to one end of a first-class lever is 8 N, and the fulcrum is located 6 m away from the input force but 3 m away from the output force, what will be the resulting output force?
Answer:
16 N
Explanation:
The ratio of output force to the input force is called mechanical advantage of the lever. Also, the ratio of input arm distance to the output arm distance is called mechanical advantage of the lever.
We have,
Input force = 8 N
Input arm distance = 6 m
Output arm distance = 3 m
We need to find the resulting output force. So,
[tex]\dfrac{F_o}{8}=\dfrac{6}{3}\\\\F_o=16\ N[/tex]
So, the resulting output force is 16 N.
LMK ASAP PLS
Energy released in nuclear fusion is several 100 million times smaller than chemical reaction like the combustion process
o True
o False
what is 1006 in scientific notation?
Answer:
1.006 * 103
Explanation:
Add the number between 1 and 9 and add a decimal accordingly . so the answer is 1.006 multiplied by 10 raised to power 3
A baby weighs 3.91 kg and measures 51.4 cm. Convert the baby's weight
to pounds and its length to inches
Count the number of electrons in the innermost shell for helium, chlorine and potassium. How
many are there?
Answer:
Helium is 2 electrons
Chlorine is 7 electrons
Potassium is 1 electron
and also Potassium is going to give chlorine an electron and do ionic bonding because chlorine is missing one electron and potassium has only 1 electron in valence
Explanation:
Outermost shell is the outermost ring so just count black dots on there for each one
#10- ill mark brainliest and give 5 stars if its correct
Answer:
#10 for?
Explanation:
Help please 2 mins til it submits
The Earth has always been a hospitable haven for life. ture or flase
Answer:
True and false at the same time
Explanation:
It is true that Earth is heaven for life but It's also hell for life because people suffer a lot and so does the Earth. Earth is a hell for life because of all the bullying, criticism, racism, sexism, and homophobic people. Life is a great thing to enjoy but with all the negative things that happened and keep happening in the world, it's a living hell for a life. The only good things are that you can explore and do things you never thought of doing before and you are ale=ways surrounded by people who love you and appreciate you for who you are but it's a 5-50 chance of you getting an opportunity like that.
I'm not a negative person it's just the ways that things are. I hope this answers your question!
Have a nice day! UwU
