Answer:
10.3 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{6.20 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 10.299003[/tex]
We have the final answer as
10.3 molesHope this helps you
5. Which of the following statements illustrates osmosis?
Answer:
there is no following so sorry
PLEASE LHELP
How many oxygen atoms are in 6 Carbon dioxide compounds (6co2)
Number 5
PLEASEE HELP
Answer:
12
Explanation:
6 moles multiplied 2 atoms of O2
That gives 12 atoms
which of these is chemical property
Chemical Formula:
4Ca(OH)2
In the chemical formula above, how many different types of elements are present in a molecule of this formula?
Answer:
They are just two....Ca and OH
What will be the volume of a typical inhaled human breath of 0.020 mol at 1.0 atm and 37°C?
O A. 0.061 L
OB. 0.51 L
O C. 5.1 L
D. 520 L
Answer:
0.51
Explanation:
i got it wrong multiple times just for this to be the answer.
listening to mitski while crying over this science goodluck
Finalmente responde:
- ¿Cuáles serían las características del agua filtrada que evidencie el funcionamiento del filtrador?
– Consideras que volver a filtrar la misma muestra de agua ¿disminuye la turbidez del agua?,, AYUDAAAAAAAAA
El agua se purifica a partir de un proceso de filtrado. Las características que evidencian el filtrado incluyen pH normal, color cristalino, ausencia de metales pesados y/o microorganismos, etc.
Los filtros para purificar agua son dispositivos que permiten el limpiado del agua con el objetivo de convertirla apta para consumo humano.En general, los filtros para lograr la purificación del agua consisten de carbón activado, el cual se prensa con alta presión. Este dispositivo de carbón activado permite secuestrar las partículas sólidas que pasan a través del filtro, con lo cual el agua sale a través del filtro completamente purificada.Las características que permiten determinar si el agua ha sido correctamente filtrada incluyen:
El agua sale cristalina, es decir, sin ningún tipo de color que evidencie la presencia de contaminación.El pH del agua potable debe oscilar entre valores normales (6,5 a 8,5)No debe contener metales tales como plomo, arsénico o cadmio (altamente tóxicos)No debe contener microorganismosAprende más sobre este tema en:
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I will make you brainless answer this 1 Question !
Direction: Answer the missing word
Answer: This means that the color of light with a higher frequency will have a lower wavelength and valence electron energy level.
Explanation:
Which two energy sources were used the most in
California in 2016? How do these sources compare to other sources
Answer:
The 1st and 2nd ones on the top
Explanation:
Hope this helps:)
what is the total number of valence electrons un xenon(xe)
Answer:
8
Explanation:
Hope this helps you :)
how to tell how many valence electrons an atom has?
Answer: Count only the electrons in the highest shell s and p orbitals when determining valence.
Explanation: I'm glad you asked this question. It is often not well explained. The term valence electrons is assigned to only the electrons in an element's highest energy level. These reside only in the s and p orbitals, and not the d or f, as I'll explain later. The s orbital can hold 2 electrons and the p can hold 6. Potassium, K, has an s orbital in its highest energy shell, 4. It contains only 1 electron, so it has a valency of 1.
Calcium, Ca, has 2 in its highest energy level: 4s^2, so it has a valency of 2. Moving to the right, the element scandium, Sc, add another electron, but it goes into the 3d orbital. 3d is in the 3rd energy shell, so it is not counted as a valence electron. Only after we move further right, to gallium, Ga, do we start adding electrons to the 4th energy level again - the 4p orbitals can accept up to 6 electrons. Ga has 3 valence electrons - 2 in the 4s and 1 in the 4p. Oxygen has 2 in the 2s and 4 in the 4p orbitals, for a total of 6. It is close to having a comple outer shell (2 in the 2s and 6 in the 2p). Just 2 more electrons would fill both the 2s and 2p orbitals for a total of 8 valence electrons, a stable configuration (the same configuration as thje stable gas Neon).
electronegativities of the elements be, mg, ca, and sr follow a specific trend within their group. based on this trend, the atoms of which element will have the least attraction for an electron?
Based on the trend of electronegativities values of the elements Be, Mg, Ca, and, Sr within their group (increasing from bottom to top), the atoms of the element Sr will have the least attraction for an electron.
We need to remember that electronegativity indicates the affinity or attraction of an element for an electron. Hence, the higher the electronegativity, the higher the attraction of that element for an electron.
The values of electronegativities of the given elements are the following:
Be = 1.57
Mg = 1.31
Ca = 1.0
Sr = 0.95
We can see that the increasing trend of electronegativities in this group is from the bottom to the top, having the Sr with the lowest electronegativity value and the Be with the highest.
This trend is related to atomic size, the larger the atomic size, the lower the electronegativity because the electron in the outermost shell will feel less attraction towards the nucleus of an atom. In a group of the periodic table, the size of an atom will increase from top to bottom.
Therefore, according to the said above, the atoms of the Sr will have the least attraction for an electron (it has the lower electronegativity value).
Find more about electronegativity here:
https://brainly.com/question/2060520?referrer=searchResults https://brainly.com/question/24370175?referrer=searchResultsI hope it helps you!
What form do ionic compounds take when solid?
Answer:
lattices
Explanation:
Ionic compounds are crystalline solids under normal conditions, have high melting points, and form lattices at the macroscopic level. Almost all of these solids dissolve in water and conduct electricity when dissolved. These substances are known as electrolytes because they can conduct electricity when in solution.
hope this helps
Helpppppppppppppppppppp
Answer:
option B it was captured by earth's gravity
Explanation:
please Brinlmark me please
um I don't know just thanks :(
Answer:
i think it would be answer D
Explanation:
does sulfuric acid have high or low electrical conductivity
Answer:
It has a high electrical conductivity, caused by dissociation through protonating itself, a process known as autoprotolysis. The comparable equilibrium constant for water, Kw is 10−14, a factor of 1010 (10 billion) smaller.
how many sets of lone pairs are around sulfur in sf4?
Answer:
One Lone Pair. (I think)
Explanation:
Which measurement of a star depends on the distance of the star from earth?
A. luminosity
B. apparent magnitude
C. absolute magnitude
D. surface temperature
Answer:
[tex](b) \: apparent \: magnitude \\ \\ [/tex]
Explanation:
Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs.
MARK ME AS A BRAINLIST PLZ
The measurement of a star depends on the distance of the star from earth
is Apparent magnitude.
What is Apparent Magnitude?
The apparent magnitude of a star is how bright the star appears in the sky
from the earth. The apparent magnitude of a star depends on two main
factors known as:
Absolute brightnessDistance.These factors help to accurately determine the brightness of stars in the
solar system.
Read more about Apparent magnitude here https://brainly.com/question/2511956
Elements in the same period have the same…
Answer:
Elements in the same period have the same (number of electron shells)
For which applications would you choose a liquid over a gas or solid?
washing clothes
linking a brake pedal to the brake pads at the wheels of a car
deodorizing a room
carving a sculpture
dissolving sugar
painting a wall
making a gear for a machine
Washing clothes
linking a brake pedal to the brake pads at the wheels of a car
dissolving sugar
painting a wall
Explanation:
cho 13,5g nhôm tác dụng với dd HCl dư.Tính khí H2 (đktc) thu được
2Al+6HCl ->2AlCl3+3H2 .nAl=m/M=13,5/27=0,5(mol) =>nH2=0,5.3/2=0,75(mol)....VH2=n.22,4=0,75.22,4=16,8(lít)...
1.) Convert 27 milliweasels to weasels
2.) Convert 27 milliohms to ohms
Please include your work step by step if you could, it will help me understand how to do this! Thanks.
Answer:
0.027
Explanation:
the beginning of each word (milli) just means a thousand.
take both number 27s and divide by 1000
it should be 0.027 for both.
you can also just ppretend there is a decimal place after 27 and move it to the left 3 spaces
This is how fluorine appears in the periodic table.
Which is one piece of information that "9” gives about an atom of fluorine?
the atomic number
the atomic mass
the mass of neutrons
the number of neutrons
The atomic number of fluorine is 9.
What is atomic number ?The charge number of an atomic nucleus is known as the atomic number or nuclear charge number of a chemical element. It will be is equal to the proton number of every atom of that element, for ordinary nuclei. Atomic number helps to getting information of elements with the aid of periodic table.
Atomic number = count of proton
It is known that the atomic number of fluorine is 9 . therefore, the answer will be atomic number.
To know more about atomic number.
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jude uses me in a beam with loads of others like me to find new materals
Answer:
good morning I am going home with 6
How do the coefficients in a balanced equation compare quantities of two
substances?
A. The coefficient of the reactant tells how many product molecules
will form,
B. The ratio of the coefficients equals the ratio of the masses of the
substances,
C. The sum of the coefficients of the reactants equals the sum of the
products,
D. The ratio of the substances' coefficients equals the ratio of their
numbers of moles,
Answer:
D. The ratio of the substances coefficients equals the ratio of their numbers of moles.
What is the significance of the color of the light observed in a line spectrum?
Answer:
When excited electrons fall back to the ground state, they release energy in the form of photons of light. These photons of light create the colors observed in a line-emission spectrum.
Explanation:
Jax designs an expierment to determine how the amount of sodium chloride affects the boiling point of water which is the independent /manipulated variable
Answer:
The amount of sodium chloride.
Explanation:
This is because an independent/manipulated control is something that is changed or controlled by the experimenter. Jax has control over the change of sodium, therefore the answer is the amount of sodium chloride.
I took the test and got this answer right btw. Good luck everyone :)
The method of converting from an
amount of one substance to an
amount of another substance using a
balanced chemical equation.
Explanation:
one substance
+one substance=balanced of chemical equation
For This activity, you will create a diagram for each of the solutions you tested showing the dissolved solutes. Make sure to label the correct charges on the ions and circle the solutes that do not have charge. include a brief explanation under each diagram of its conductivity. Finally, write a brief explanation of what would happen to the conductivity of the ionic solutions if you were to mix in a covalant compound such as a sugar or one of the covalent solutions. Where have you seen a similar experiment and results?
Ionic solutions are known to be electrolytes due to the presence of free ions. Covalent solutions are non-electrolytes hence the decrease the conductivity of the ionic solutions.
Electrolytes are solutions that conduct electricity. The charge carriers in solution are ions. These ions are mobile. Covalent substances are molecular in nature. They do not contain ions hence they do not give ions when dissolved in water.
The conductivity of ionic solutions owes to the presence of ions in solution. The higher the concentration of ions in solution, the greater the conductivity of the solution. When covalent substances are mixed with ionic solutions, the concentration of ions decreases and the conductivity of the solution decreases.
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In which state of matter are electrons stripped from the nucleus
Plasma is one of the four common states of matter. A plasma is an electrically charged gas. In a plasma, some electrons have been stripped away from their atoms.
Explanation:
Plasma is one of the states of matter that are electrons stripped from the nucleus
How do you separate rice grains that have accidentally mixed with flour
