What is the magnetism of O2+2, and how many unpaired electrons does it possess?
1. paramagnetic; 3
2. diamagnetic; 2
3. diamagnetic; 0
4. paramagnetic; 1
5. paramagnetic; 4
6. paramagnetic; 2
7. diamagnetic; 1
Answers
The molecule is diamagnetic with zero unpaired electrons.
In order to determine the magnetism of the O2^2+ ion, we must have to write the molecular orbital configuration and fill its electrons into molecular orbitals. There are 14 electrons in the molecule. Its molecular orbital configuration is;
σ1s2, σ*1s2, σ2s2, σ*2s2, σ2px2 π2py2 π2pz2
We can see from the molecular orbital configuration of the molecule that the molecule is diamagnetic with zero unpaired electrons.
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Related Questions
what are plasmas properties?
Answers
Answer:Plasma is highest energy state of matter.It consists of electrons,protons and neutral particles.
Explanation:(1) Plasma has a very high electrical conductivity .
(2) The motion of electrons and ions in plasma produces it's own electric and magnetic field
(3)It is readily influenced by electric and magnetic fields .
(4)It produces it's on electromagnetic radiations.
use the Gizmo to create a path for carbon that begins and ends in the atmosphere. Fill in the steps in the path below. Then, label each location with the system it represents. Finally, summarize very briefly how the carbon atom got to that location.
Answers
Volcanoes, burning fossil fuels, and respiration of organisms.
Explanation:
Volcanoes, burning fossil fuels, and respiration of organisms releases carbondioxide that forms atmospheric carbondioxide. The carbon enters in the biosphere through the process of photosynthesis. In plants, carbondioxide enters in the plant body which is used as a reactant from which food is prepared. The carbon present in the plant body in the form of glucose which can be transferred into another organism due to feeding of organisms. The organism released this carbon in the form of carbondioxide when the eaten food is broken down for the release of energy. In that way, carbon moves from biosphere to the atmosphere whereas Volcanoes and burning fossil fuels releases carbon in the atmosphere, in this way carbon moves from lithosphere to atmosphere.
hello it's my new id myself numu
Answers
Answer:
Hi numu !
How are you .
:D
Hope you have nice time
Draw the final product of this series of reactions. 1. SOCI2 2. NaCN OH • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If more than one product is possible, only draw the major product. • If the reaction produces a racemic mixture, draw both stereoisomers. • Separate structures with + signs from the drop-down menu.
Answers
SOCI2 is sulphonyl chloride is a chlorinating reagent ,
What is chlorinating reagent ?
Additionally, the production of allyl and benzyl chlorides frequently involves radical chlorination.
Several chlorinating agents have the capacity to function as both electrophilic and radical sources of Cl, depending on the circumstances of the reaction and the presence or absence of radical initiators, such as chemical or light initiators.
What kind of chemical is utilized in chlorination?
There have been various instances where sodium chlorite has been utilized as a chlorinating reagent.
As a result, benzene gave modest yields of chlorobenzene (20%) while mesitylene underwent monochlorination in 95% yields when combined with trichloroacetic acid (which produces chlorous acid, HOClO, in situ) 1999M1493>.
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Suppose that during that icy hot lab 65,000 J of energy were transferred to 450 g of water at 20°C what would have have been the final temperature of the water
Answers
During that icy hot lab, 65,000 J of energy was transferred to 450 g of water at 20°C, the final temperature of the water will be 54.5 °C.
Energy transferred = 65,000 J or 65 KJ
Mass of the water = 450 g
Initial temperature (T1) = 20 °C
Final temperature (T2) = ?
Specific heat of H2O = 4.186 J /g. °C
We will calculate the final temperature by using the following equation.
q = m.c.ΔT
Rearrange it for ΔT
ΔT = q / m.c
And ΔT = T2 - T1
Put ΔT value in the equation
T2 - T1 = q / m.c
Put the values
T2 - 20°C = 65000 j / 450 g × 4.186 J /g. °C
T2 - 20°C = 65000 j / 1883.7 j /°C
T2 - 20°C = 34.51 °C
T2 = 34.51 °C + 20 °C
T2 = 54.5 °C
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how do you find the metling point of a tin with the mass of 232
Answers
The melting point of tin is approximately 231.93 degrees Celsius or 449.47 degrees Fahrenheit. This means that when tin reaches this temperature, it becomes a liquid.
Melting of a substance happens when temperature it's at makes it change it's state from solid to liquid. For tin, this temperature would be 231.93 degrees Celsius or 449.47 degrees Fahrenheit. When tin is heated to this temperature, the forces holding its inner particles weaken, allowing it to transform from a solid tin to a liquid state
It is important to note that the temperature may vary slightly depending on the purity of the tin and other factors.
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You dissolve 0.66 g of potassium chloride (KCl) in 700 ml of water.What is the molarity of the solution?(From the periodic table: 1 mol K = 39.10 g; 1 mol Cl = 35.453 g)=Enter the value rounded to three decimal places with no units
Answers
Answer
0.009 mol/L
Explanation
Given:
Mass of KCl = 0.66 g
Volume of water = 700 mL = 0.7 L
From the periodic table: 1 mol K = 39.10 g; 1 mol Cl = 35.453 g
What to find:
The molarity of the solution
Step-by-step solution:
The formula to calculate molarity is:
\(\text{Molarity }=\frac{Mole}{Volume\text{ in L}}\)The first step is to calculate the molar mass of KCl
KCl = Mass of 1 mol K + Mass of 1 mol Cl
KCl = 39.10 g + 35.453 g
KCl = 74.553 g
So the molar mass of KCl = 74.553 g/mol
The next step is to determine the number of moles of KCl in 0.66g of KCl:
\(\text{Mole }=\frac{Mass}{Molar\text{ mass}}=\frac{0.66\text{ g}}{74.553\text{ g/mol}}=8.852762464\times10^{-3}mol\)Put the values of mole and volume into the molarity formula above to determine the molarity of the solution:
\(\begin{gathered} \text{Molarity }=\frac{8.852762464\times10^{-3}\text{ mol}}{0.7\text{ L}}=0.00885276molL^{-1} \\ To\text{ thr}ee\text{ decimal places,} \\ \text{Molarity }=0.009\text{ }molL^{-1} \end{gathered}\)The molarity is 0.009 mol/L
1. Two objects are placed in a cooler, and heat flows between the objects. The two
objects must have different -
Answers
Answer:
temperatures.
Explanation:
Movement of heat flowing from one object to the other is a result from difference in temperature. Heat will flow from your warmer object to the cooler object until they both reach the same temperature.
What type of mirror could have resulted in the image of the giraffe above?
Answers
Answer:
A convex mirror
Explanation:
Good luck on the test m8!
A convex mirror could have resulted in the image of the giraffe above. A mirror is a surface which reflects almost all types of light that strike it
What is mirror?A mirror is a surface which reflects almost all types of light that strike it, according to physics. Furthermore, unless or until an opaque item is placed between both the reflecting surface as well as the source of light, a mirror will continue to reflect light in a regular manner.
In actuality, the reflection principle underlies how mirrors function. As far as we are aware, light is either reflected or absorbed. Whenever a mirror is present, light is reflected. Because a mirror has a flat surface just at microscopic level, light is reflected when it strikes one. A convex mirror could have resulted in the image of the giraffe above.
Therefore, a convex mirror could have resulted in the image of the giraffe above.
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Compared to low-context cultures, high-context cultures tend to take a(n) ________ approach regarding the meaning of business contracts.
A) equally flexible
B) more literal
C) more flexible
D) more aggressive
E) none of the above
Answers
The answer is C) more flexible.
High-context cultures tend to value personal relationships and implicit communication, which can result in a more flexible approach to business contracts compared to low-context cultures that value explicit communication and legalistic contracts.
What is a culture?
Culture refers to the shared beliefs, values, customs, behaviors, and artifacts that characterize a group or society. It includes not only the tangible aspects such as clothing, food, and architecture but also the intangible aspects such as language, religion, and social norms.
What is legalistic contracts?
Legalistic contracts refer to the type of contracts that are highly detailed and specific, with a focus on legal obligations, rights, and penalties. These contracts are usually used in low-context cultures, where communication is direct, and the meaning is based on the words themselves rather than the context.
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How many atoms are in 1.65 mol of potassium
Answers
Answer:
9.93 × 10²³ atomsExplanation:
The number of atoms of potassium can be found by using the formula
N = n × Lwhere 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
N = 1.65 × 6.02 × 10²³
We have the final answer as
9.93 × 10²³ atomsHope this helps you
How many atoms are in 45 grams of Mercury? *
Answers
Answer:
1.350996E23 or 1.350996*10^23 atoms
Explanation:
to find the total number of atoms we need to find the number of moles present in 45grams of mercury and since the molar mass of mercury is given as 200.59 grams . we can calculate :
number of moles=mass/molar mass
=45g/200.59 g
=0.224338
to find the amount of atoms , we multiply the number of moles with the Avogadro's number
=0.224338*6.02214076*10^23
=1.350996*10^23 atoms
In reaction 4 (page 76), nh4cl cannot be analyzed gravimetrically because -
Answers
In reaction 4 (page 76), NH4Cl cannot be analyzed gravimetrically because it is a water-soluble compound. Gravimetric analysis is a method of quantitative chemical analysis based on the measurement of mass.
It involves the precipitation of a solid compound from a solution and subsequent weighing to determine the amount of the analyte. However, NH4Cl readily dissolves in water, forming an aqueous solution. It does not form a stable precipitate that can be easily isolated and weighed. Therefore, it is not suitable for gravimetric analysis. Other analytical methods, such as titration or spectrophotometry, would be more appropriate for the quantitative analysis of NH4Cl.
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PLZ HELP ME WITH MY WORK
Answers
Answer:
Explanation:
pretty sure its mixure.
I’m sure mann
draw the atomic structure of a sodium atom
Answers
The atomic structure of a sodium atom:
The atomic number of the sodium atom is eleven. The electrons are placed in their respective orbits and sub-orbits with an electron configuration of 1s²2s²2p⁶3s¹.
The number of electrons and protons is also eleven and they are present in the nucleus of the atom. The sodium atom with an atomic number eleven is made up of a central nucleus which holds eleven positively charged protons, and eleven neutrons.
To maintain a neutral charge the proton count is always balanced with that of the electron count that is present in their respective energy level orbits outside the nucleus based on the energy possed by the electrons.
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How many moles is 25g of ammonia (NH3)?
Answers
Explanation:
Ammonia has a formula mass of 17.031 g/mol, so the top blank is 1 and the bottom blank is 17.031
Calculating the product, we get the answer to be 1.5 mol
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Ethyl acetate is a sweet-smelling solvent used in varnishes and fingernail polish remover. It is produced industrially by heating acetic acid and ethanol
together in the presence of sulfuric acid, which is added to speed up the
reaction. The ethyl acetate is distilled off as it is formed. The equation for the
process is as follows.
CH3COOH + CH3CH2OH --> CH3COOCH2CH3 + H2O
Determine the percentage yield in the following cases:
a. 68.3 g of ethyl acetate should be produced but only 43.9 g is recovered.
b. 0.0419 mol of ethyl acetate is produced but 0.0722 mol is expected. (Hint:
Percentage yield can also be calculated by dividing the actual yield in moles
by the theoretical yield in moles.)
c. 4.29 mol of ethanol is reacted with excess acetic acid, but only 2.98 mol of
ethyl acetate is produced.
d. A mixture of 0.58 mol ethanol and 0.82 mol acetic acid is reacted and 0.46
mol ethyl acetate is produced. (Hint: What is the limiting reactant?)
Answers
Answer:
a) 64.27%
b) 58%
c) ethanol is the limiting reactant
d) ethanol is the limiting reactant
Explanation:
We have to note that the expected yield is the theoretical yield while the actual mass or amount of product formed is the actual yield.
a) theoretical yield=68.3g
Actual yield= 43.9 g
Percentage yield= 43.9/68.3 ×100
Percentage yield= 64.27%
b) theoretical yield= 0.0722 moles
Actual yield = 0.0419
Percentage yield= 0.0419/0.0722 × 100
Percentage yield= 58%
c) note that the limiting reactant yields the least number of moles of product
Ethanol will be the limiting reactant since it is not present in excess.
d) from the reaction equation;
1 mole of acetic acid produces 1 mole of ethyl acetate
0.58 moles of ethanol produces 0.58 moles of ethyl acetate
1 mole of acetic acid yields 1 mole of ethyl acetate
Hence 0.82 moles of acetic acid yields 0.82 moles of ethyl acetate
Hence ethanol is the limiting reactant.
A shipwright measures the length of a bolt. The length is 41.2cm. What is the length in meters? Write your answer as a decimal.
Answers
The length of this shipwright is equal to 0.412 meter.
What is a conversion factor?In Science, a conversion factor can be defined as a number that is typically used to convert (change) a number in one (1) set of units to another, either by dividing or multiplying.
Generally speaking, an appropriate conversion factor to an equal value must be used when it is necessary to perform any mathematical conversion.
Conversion:
100 centimeters = 1 meter.
41.2 centimeters = X meter.
Cross-multiplying, we have:
100X = 41.2
X = 41.2/100
X = 0.412 meter.
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Question 5 of 10
What are the substances you start with in a chemical reaction called?
A. The products
B. The mixture
C. The reactants
D. The intermediates
Answers
Answer:
c. the reactants
Explanation:
the reactants are specifically the substances consumed in the course of chemical reaction
When electricity passes through water (H20), the water breaks down to form
hydrogen gas (H2) and oxygen gas (02).
Which equation represents this chemical reaction?
A.2H20+ 02 – 2H2
B.2H2 + 02 – 2H20
C.2H20 + 2H2 – 02
D.2H20 - 2H2 + O2
Answers
Answer:
A. Because you have to simplify
Answer:
decomposition
Explanation:
i dont cap
As the temperature of water increases its density
a. Increases
b. Decreases
c. Stays the same
Answers
Answer:
B
Explanation:
The warmer the water, the more space it takes up, and the lower its density.
Answer:
The density decreases
Explanation:
The colder the water the closer the particles move together making it denser. The hotter the water the more the particles slow down and move away from each other making the water less dense.
UMMM.....I NEED YOUR HELP GUYS....I HAVE GOT A QUESTION FOR YOU.......... Water waves slow down and their wavelength shortens when they reach shallower water.........explain why this happens???????help me out!!
Answers
Answer:
Becausee deep - water waves do not interact with the ocean bottom as they travel , their speed is independent of the water depth . But as waves enter shallow water , interaction with the bottom alters the waves . Wave speed decreases , wavelength shortens and wave height increases .
Hope this helps :)
In 1-2 sentences, explain the role memory plays in animals' sensory systems and provide an example of this role in action.
When 2 people answer, I'm able to mark brainliest, I will choose brainliest on the best answer.
Answers
Answer:The role of memory is important in an animals sensory system. It helps them to be aware of their surroundings, find food and stay safe. Some animals bury food, they need to be able to remember where they put the food. Other animals migrate to find warmer places with food over the winter. Another example of animals using memory is the ability of some animals to carry out certain tasks, dogs can learn and remember commands.
Explanation:
I 6) Ca(OH)2 + 2HCl -----> CaCl2 + 2H2O How many molecules of calcium chloride are produced by the combination of 3.5x1024 molecules of hydrochloric acid with excess calcium hydroxide?
Answers
Answer:
go for what ever brother GUESS / imagine this gate brainlyist for literally doing nothing.
Explanation:
What kind of device in a circuit supplies voltage? What kind of device acts as a resistor?
Answers
Battery device in a circuit which supplies voltage. Battery is a electrical component which converts chemical energy into electrical energy using the process electrochemical oxidation-reduction reaction. Voltage is also called as potential difference which means the difference between two electropotentials of battery.
Resistor is a electronic component which offer resistance in the circuit. Resistor main purpose which opposes current flow in the circuit. Resistor are available in two categories linear resistors(metal oxide resistor ,potentiometer) and non linear resistors (photo resistor and thermistor)
The above two electronic components are played important keyrole in electronic circuit.
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Use the drop-down menus to identify the type of mass movement in each image. Grass covered land with a large depressed area. Muddy water is rushing across a roadway. Dirt and fallen trees cover a roadway.
Answers
Answer: First one is slump, then mudflow, then landslide.
Explanation:
Just got it right on e2020
Answer:
First one is slump, then mudflow, then landslide.
Explanation:
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Plants and animals interact with organic molecules differently. Explain how.
Answers
Answer:
All animals, all fungi, and some kinds of bacteria are heterotrophs and consumers
Explanation:
rank the following alkyl halides in order of their increasing rate of reaction with triethylamine: iodoethane 1-bromopropane 2-bromopropane
Answers
The order of increasing reaction rate of alkyl halides with triethylamine is iodoethane, 1-bromopropane, and 2-bromopropane.
When the primary alkyl halide reacts with the triethylamine, it's faster than the secondary alkyl halide. Since triethylamine is a strong, bulky base that tends to perform nucleophilic substitution, it undergoes a reaction with both primary and secondary alkyl halides. When halides react with triethylamine, the bond between nitrogen and carbon is formed.
In this reaction, the rate of reaction will be slower with secondary alkyl halides due to steric hindrance. Iodoethane will be more reactive than 1-bromopropane because of the higher electronegativity of iodine which makes it more prone to nucleophilic substitution. Based on the above discussion, the order of increasing rate of reaction with triethylamine is 2-bromopropane < 1-bromopropane < iodoethane.
Therefore, iodoethane is the most reactive of the three alkyl halides, 1-bromopropane is more reactive than 2-bromopropane and 2-bromopropane is the least reactive.
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A scientist is studying a protist and records the following information about it:Cell has a nucleus Has a flagella Produces oxygen Found in salt water Which conclusion is best supported by the information?A. B.The protist is an animal-like flagellate because it has a flagellum. C.The protist is a plant-like dinoflagellate because it produces oxygen.D.The protist is a plant-like dinoflagellate because it was found in salt water.The protist is an animal-like flagellate because it has a nucleus.
Answers
Answer:
B)The protist is a plant-like dinoflagellate because it produces oxygen.
Explanation:
This was the answer on edge nuity
The conclusion that is best supported by the information is that the protist is a plant-like dinoflagellate because it produces oxygen.
What is a protist?A protist is any eukaryotic organism that is, an organism whose cells contain a cell nucleus that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor,the exclusion of other eukaryotes means that protists do not form a natural group, or clade.
Therefore, some protists may be more closely related to animals, plants, or fungi than they are to other protists. However, like the groups algae, invertebrates, and protozoans, the biological category protist is used for convenience. Others classify any unicellular eukaryotic microorganism as a protist.The study of protists is termed protistology.
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high quality charcoal that is light weight and easily broken is made from ______. multiple choice question.
Answers
High quality charcoal that is lightweight and easily broken is made from hardwoods such as oak, maple, and hickory.
Charcoal is a porous, black, carbon-rich material that is produced by heating organic matter (such as wood or coconut shells) in the absence of air. The quality of charcoal can vary depending on the type of organic matter used, as well as the production method.
High quality charcoal that is lightweight and easily broken is typically made from hardwoods such as oak, maple, and hickory. These woods have a high density and a low moisture content, which makes them ideal for producing charcoal with a high carbon content and low ash content. In addition, the heating process used to produce this type of charcoal is typically done at high temperatures for a short period of time, which helps to remove impurities and create a more porous and lightweight material.
Overall, the type of organic matter used and the production method are important factors in determining the quality of charcoal, with hardwoods being a common choice for producing high quality charcoal that is lightweight and easily broken.
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