Answer:
c i need 3 brainliests for virtuoso rank pls
Explanation:
Answer:
500,000 m
Explanation:
Each km has 1000m so to covert any km to m simply multiply the length value by 1000.
500 x 1000 = 500,000
Calculate the new temperature when a container of
gas has a pressure of 795 mm Hg at 273 K and the
pressure is lowered to 358 mm Hg.
(Gay Lussac's Law) P1T2/P2T1
- 0.00165
- 246
- 123
- 606
Answer: The new temperature of container is 123 K.
Explanation:
Given: [tex]P_{1}[/tex] = 795 mm Hg, [tex]T_{1}[/tex] = 273 K
[tex]P_{2}[/tex] = 358 mm Hg, [tex]T_{2}[/tex] = ?
Formula used to calculate the new temperature is as follows.
[tex]\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}[/tex]
Substitute the values into above formula as follows.
[tex]\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\\frac{795 mm Hg}{273 K} = \frac{358 mm Hg}{T_{2}}\\T_{2} = 123 K[/tex]
Thus, we can conclude that the new temperature of container is 123 K.
can you please help me with this
Explanation:
TUU-PQVH-MFG LINK for them who truely interested in Paranormal and have any doubt on Paranormal
What is the salt called when it is mixed with water?
Answer:
NaCI (salt) in water
Explanation:
After the salt compounds are pulled away apart the sodium chloride atoms are surrounded by water molecules. Once this happens we know that the salt is dissolved resulting in a homogeneous solution!
HOPE THIS HELPED!
Answer:
NaCI (salt) in water
Explanation:
took the quiz
If an element forms a 1- ion, in which group of the periodic table would you
expect to find it?
O A. 18
B. 2
C. 1
O D. 17
Answer:
D. 17
Explanation:
Halogens (group 17) are most likely to form a -1 ion. This is because they want to complete their octet. A prime example of this is sodium chloride. Sodium chloride is an ionic compound. Sodium gives up its valence electron, therefore, recieving a +1 charge, and Chlorine takes it, giving it a -1 charge. Chlorine is also in group 17, halogens.
Answer: the answer is D.17
Explanation:
What do modern scientist use in classifying organisms that Linnaeus did not use?
Answer:
The taxonomic units in modern taxonomy are domain, kingdom, phylum (division is sometimes used in botany in place of phylum), class, order, family, genus, and species.
The evidence used by scientists use to classify organisms are essentially form and evolutionary relationships.
Evolutionary relationships.
The diversity of living organisms on earth is very overwhelming. Human beings have come up with ways of organizing, or classifying, biological diversity throughout human history.
Organisms can be classified according to any number of criteria, including overall similarities, colors or ecological factors. It was agreed that the most useful way for scientists to organize biological diversity is to group organisms according to shared evolutionary history or characteristics. Grouping did not only result in an organized classification but it also contains and conveys information about our understanding of the evolutionary history of those groups.
Although our understanding of evolutionary relationships among organisms has greatly improved but it is not complete. Relationships among organisms and groups of organisms continues to be revised as new data becomes available comparing them to the past. Almost all taxonomies or systems of nomenclature based on evolutionary relationships among organisms are being revised.
The use of binomial nomenclature system was proposed by Carl Linnaeus. In this system, the phylogenetic relationship, cladistic analysis, and systematic approaches are used.
Explanation: Hello, i hope this helps. Your so very welcome!
How many energy levels does an atom of carbon have?
Answer:
6
Explanation:
La suma de los números de masa de tres isótopos es 126 y la suma de los números de neutrones es 60. Hallar la configuración electrónica de uno de los isótopos, si su carga eléctrica es 1- . b) Determine grupo y periodo para dicho elemento. c) Determine los cuatro números cuánticos para el ultimo electrón. d) Si el elemento que hallaron se une con el elemento flúor que tipo de enlace formará.
A. The electronic configuration for the isotope we want is as follows:
[tex]1s^2 2s^2 2p^6 3s^2 3p^6[/tex].
B. The element belongs to period 3 and group 18.
C.The last electron's four quantum numbers are:
m_s = +1/2 or -1/2 (since the electron can spin up or spin down)
D. With fluorine, the element will develop an ionic connection.
What is an Electronic configuration?The positioning of electrons within an atom, molecule, or other physical structure, such as a crystal, is referred to as electronic configuration. It is typically represented by an array of numbers, letters, or superscripts that denote the number of electrons in each atom or molecule's shell or subshell.
Let the first isotope's mass number be x, the second isotope's mass number be y, and the third isotope's mass number be z. Also, let the first isotope's neutron number be a, the second isotope's neutron number be b, and the third isotope's neutron number be c. Using the information provided, we can construct two equations:
126 = x + y + z (equation 1)
a+b+c=60 (equation 2)
Because all three isotopes contain the same amount of protons, we can infer that their electrical configurations are the same. As a result, all that remains is to determine the electrical structure of one of the isotopes.
We can use the fact that the total of the mass numbers is equal to the amount of protons plus the number of neutrons. Let m be the isotope's mass number and z be the number of protons (the atomic number). Then:
m = z + n, where n is the number of neutrons.
The electrical arrangement of an element can also be used to calculate the atomic number. Assume if the isotope we're seeking for is a periodic table element. The element's electrical configuration can be written as:
[tex]1s^2 2s^2 2p^6 3s^2 3p^6[/tex]
The configuration's last electron is in the (n+1)s or (n+1)p orbital. As a result, we may calculate the atomic number by counting the number of electrons in the arrangement. For example, the atomic number for the aforementioned electrical configuration is 18 (2 + 8 + 8).
Let's look for the electrical configuration of the isotope we're after. Because the element's electrical configuration is not specified, we can presume it is a noble gas. As an example, consider argon (Ar), which has the electrical configuration:
[tex]1s^2 2s^2 2p^6 3s^2 3p^6[/tex]
Because argon belongs to period 3 and group 18 (also known as group 8A), the isotope we seek belongs to period 3 and group 18. This is due to the fact that atoms in the same class have the same amount of valence electrons and chemical characteristics.
As a result, the electrical configuration of the isotope we seek is:
[tex]1s^2 2s^2 2p^6 3s^2 3p^6[/tex]
b) The element belongs to period 3 and group 18.
c) The last electron's four quantum numbers are:
Because the electron is in the 3p orbital, n = 3 l = 1.
Because there are three 3p orbitals, m_l = -1, 0, or 1.
m_s = +1/2 or -1/2 (since the electron can spin up or spin down)
d) With fluorine, the element will develop an ionic connection. Because the element belongs to group 18, it has 8 valence electrons, making it a stable noble gas configuration. It may gain one electron to make a 1- ion or lose eight electrons to form an 8+ ion to obtain this state. Fluorine has seven valence electrons and can gain one electron to produce.
Therefore, the electronic configuration for the isotope we want is as follows:
[tex]1s^2 2s^2 2p^6 3s^2 3p^6[/tex]
Learn more about Electronic configuration, here:
https://brainly.com/question/29757010
#SPJ2
Your question is in Spanish, but the English translation of the question is:
The sum of the mass numbers of three isotopes is 126 and the sum of the neutron numbers is 60. Find the electronic configuration of one of the isotopes if its electric charge is
1- b) Determine group and period for said element.
c) Determine the four quantum numbers for the last electron.
d) If the element they found joins with the fluorine element, what type of bond will it form?
At 20°c solubility of sugar is 179.How much gram of sugar is needed to prepare saturated solution with 40gm of water
Answer: Volume is 22,3 ml
Explanation: I assume solubility is expressed to 100 ml water
You can use proportion : 179 g / 100 ml water = 40 gm/ V
Multiplying the proportion gives 179 g · V = 100 ml · 40 g | : 179 g
V = 4000 ml / 179 = 22,3 ml
Why are nonnative species a threat to biodiversity?
A. They often use up resources that other organisms need
B. They are not able to successfully breed in the wild
C. They release pollution into many environments
D. They easily contract and spread diseases to other organisms
Answer:
A. They often use up resources that other organisms need.
Explanation:
Invasive alien species are animals, plants, fungi and microorganisms entered and established in the environment from outside of their natural habitat. T
hey reproduce rapidly, out-compete native species for food, water and space, and are one of the main causes of global biodiversity loss.
why would an electric vehicle be allowed to travel in the high occupancy vehicles lands with only one driver ?
Answer:
because it could self drive
Explanation:
idrk but thats my answer
What are the two limitations of earth plates
Answer:
The tectonic style and viability of modern plate tectonics in the early Earth is still debated. Field observations and theoretical arguments both in favor and against the uniformitarian view of plate tectonics back until the Archean continue to accumulate. Here, we present the first numerical modeling results that address for a hotter Earth the viability of subduction, one of the main requirements for plate tectonics. A hotter mantle has mainly two effects: 1) viscosity is lower, and 2) more melt is produced, which in a plate tectonic setting will lead to a thicker oceanic crust and harzburgite layer. Although compositional buoyancy resulting from these thick crust and harzburgite might be a serious limitation for subduction initiation, our modeling results show that eclogitization significantly relaxes this limitation for a developed, ongoing subduction process. Furthermore, the lower viscosity leads to more frequent slab breakoff, and sometimes to crustal separation from the mantle lithosphere. Unlike earlier propositions, not compositional buoyancy considerations, but this lithospheric weakness could be the principle limitation to the viability of plate tectonics in a hotter Earth. These results suggest a new explanation for the absence of ultrahigh-pressure metamorphism (UHPM) and blueschists in most of the Precambrian: early slabs were not too buoyant, but too weak to provide a mechanism for UHPM and exhumation.
Explanation:
The H3O+ ion concentration of a solution is 1 × 10–5 mole per liter. This solution is
A. acidic and has a pH of 5
B. acidic and has a pH of 9
C. basic and has a pH of 5
D. basic and has a pH of 9
The given [tex]H_3O^+[/tex] ion concentration of a solution is an acidic solution and has a pH of 5.
How does the pH scale measure?The letters pH stand for the potential of hydrogen since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance.The pH scale measures the relative acidity and alkalinity of solutions.It's a negative logarithmic scale of base ten that measures the potential of a solution to accept protons in the form of hydrogen ions.A pH scale ranges from 0 to 14 with 7 being neutral. A pH lower than 7 is considered acidic and a pH greater than 7 is considered basic (alkaline).What is the pH value of an [tex]H_3O^+[/tex] ion?pH can be calculated by using the following equation:
pH = -1(log[H3O+])
Where [H3O+] is the concentration of hydronium ions (hydrogen ions).
The concentration is given as 1 × [tex]10^-^5[/tex] mole per liter.
So, if [H3O+] = 1x[tex]10^-^5[/tex] mol/L,
then the pH = -1(log(1 × [tex]10^-^5[/tex] )) = 5
So, the pH of the given solution is 5. The value is less than 7. Hence it is considered an acidic solution.
Therefore, The given solution is an acidic solution with a pH of 5.
Learn more about the pH of a solution here:
https://brainly.com/question/4137247
#SPJ2
Help me please!!
Two gas samples are stored in a container with a solid barrier separating the gases. Gas A is at 125 °C, and Gas B is at 80 °C.
What will occur when the solid barrier is removed?
The molecules of Gas A will collide and mix with Gas B molecules. Gas A and Gas B molecules will all speed up. The final temperature will be greater than 125 °C.
The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will slow down, and Gas B molecules will speed up. The final temperature will be between 80 °C and 125 °C.
The molecules of Gas A will collide but not mix with Gas B molecules. There will be no changes in the temperature of either side of the container.
The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will speed up, and Gas B molecules will slow down. The final temperature will be less than 80 °C.
Name of compound 6T ?
Answer:
Explanation:
I serched for it i found name is :sexithiophene
What is the frequency of a wave that has a wavelength of 0.50 m and a speed of 380 m/s?
Answer: f = 760 Hz
Explanation: speed = frequency · wavelength v = fλ.
frequency f = v/ λ = 380 m/s / 0.50 m = 760 Hz
Li + HCl → H2 + Lici
Potential energy
Reaction progress
A. The products have higher potential energy, and energy is
absorbed.
O B. The reactants have higher potential energy, and energy is
absorbed.
C. The products have higher potential energy, and energy is released.
D. The reactants have higher potential energy, and energy is released.
Answer:
I believe it's D.
Explanation:
In which layer of the ocean do surface currents flow?
Answer:
ooh sorry, but will this help you now:
Ocean dynamics define and describe the motion of water within the oceans. Ocean temperature and motion fields can be separated into three distinct layers: mixed (surface) layer, upper ocean (above the thermocline), and deep ocean. Ocean currents are measured in sverdrup (sv), where 1 sv is equivalent to a volume flow rate of 1,000,000 m (35,000,000 cu ft) per second.
Surface currents, which make up only 8% of all water in the ocean, are generally restricted to the upper 4…
Explanation:
Hope this helps :)
A tactic used by investigators to identify deceit is to ask the suspect to recount their alibi backwards. True False
Answer:
It is True.
Explanation:
Investigators use this tactic to see if the suspect is recalling by memory and if they will change their story after being asked to recall backwards.
Answer:
True
Explanation:
Correct on the test
which of the following is a product in the chemical equation N + O2 = NO2
1. NO2
2. N
3. O
4. O2
A student wants to determine if a
sample of tap water contains Mg+2.
Which of the following pieces of
information are not needed to do a
titration ?
Answer:
The Density of Magnesium.
Explanation:
if an atom has 4 protons, 5 neutrons, and 4 electrons, what would its atomic mass be?
Answer:
4
Explanation:
If I remember correctly, the atomic # will always be the same as the # of electrons
Select the correct structure that
corresponds to the name.
2,2-dimethyl-3-hexyne
A. CH3CH2C=CC(CH3)3
B. CH3CH(CH3)C = CCH(CH3)2
C. both
Answer: A
Explanation:
The correct structure of the name of the compound given is CH₃CH₂C=CC (CH₃)₃.
What is 2,2-dimethyl- 3- hexyne?Dimethyl hexyne is an organic compound. Its chemical formula is C8H14. The compound hexyne is used to make a complex compound, agrochemical, and pharmaceutical compounds.
Thus, the correct option is A, CH₃CH₂C=CC (CH₃)₃.
Learn more about 2,2-dimethyl- 3- hexyne
https://brainly.com/question/24617388
#SPJ2
What’s a element that is a metal, contains 1 valance electron, 3 energy levels?
Explanation:
Sodium is the element having one valance electron and 3 energy level and is a metal.Its atomic number is 11 .So in first energy level ,there is 2 electrons ,in second energy level,there is 8 electrons and in third energy level,there is one electron.The one electron in the third energy level is called valance electron and it is a metal in the sence it has only one valance electron and it can easily loose it and gain +ve charge.
A 25.0mL solution of KOH is neutralized with 30.3 mL of 0.100M HBr. What is the concentration of the original KOH solution?
Answer:
The concentration of the original KOH solution is 0.1212 M.
Explanation:
Dilution is the process to reduce the concentration of solute in solution. This is accomplished by adding more solvent to the same amount of solute. In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding solvent to an existing solution.
As only solvent is being added, the consequence is that by not increasing the amount of solute, but if the amount of solvent, the concentration of the solute decreases.
The expression for the dilution calculation is:
Ci* Vi = Cf* Vf
where:
Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volumeIn this case:
Ci= ? Vi: 25 mL Cf: 0.1 M Vf: 30.3 mLReplacing:
Ci* 25 mL= 0.1 M* 30.3 mL
Solving:
[tex]Ci=\frac{0.1 M*30.3 mL}{25 mL}[/tex]
Ci=0.1212 M
The concentration of the original KOH solution is 0.1212 M.
When carbon disulfide, CS2, forms from its elements. Heat is absorbed. How much heat would be required to produce 5.0 moles of carbon disulfide
Answer:
5.9 × 10² kJ
Explanation:
When carbon disulfide, CS₂, forms from its elements, heat is absorbed. The corresponding value for the standard enthalpy of formation of carbon disulfide is 117.36 kJ/mol. The thermochemical equation that represents this process is:
C(graphite) + 2 S(s, rhombic) ⇒ CS₂(g) ΔH°f = 117.36 kJ/mol
117.36 kJ of heat are absorbed when 1 mole of CS₂ is formed. The amount of heat absorbed when 5.0 moles of CS₂ are formed is:
5.0 mol × 117.36 kJ/mol = 5.9 × 10² kJ
can someone answer dis:
3) When you take the atomic weight and subtract the atomic number, you are finding the number of __________ in the atom.
Answer:
If we subtract the atomic number from the atomic mass: atomic mass - atomic number = number of protons + number of neutrons - number of protons. Thus we get the number of neutrons present in an atom when we subtract the atomic number from the atomic mass.
Explanation: hope this helps???
3. If a gas has a pressure of 32.1 psi at a temperature of 25°C, then what is the new pressure if the temperature is increased to 75°C?
Answer:
P2 = 37.5 psi
Explanation:
P1 = 32.1 psi
T1 = 25°C + 273 = 298K
T2 = 75°C + 273 = 348K
P2 = ?
P1/T1 = P2/T2
or
P2 = (T2/T1)P1
= (348K/298K)(32.1 psi)
= 37.5 psi
can anyone tell me the answer
Answer:
A. A as concentration decreases.
Explanation:
A represents a reactant and B is a product, the concentration of the latter increases at the expense of the concentration of the former. Hence, A is the reactant of the chemical reaction as its concentration decreases.
PLEASEEEE HELP THIS IS SCIENCE
IGNORE THE QUESTIONS WHERE I ANSWERED, I GUESSED
Answer:
where is the answer??
Please do not just take the points without answering the question.