In the above figure, what type of bond is formed?
metallic
ionic
covalent
nonpolar
Answers
Answer:
It is an covalent bond.
Explanation: The bond is covalent because all the dots are equaled to each other therefore creating a stable bond. When the bonded atoms have a lower total energy than that of widely separated atoms, a covalent bond forms. The electrons are not moved from one atom to the other in polar covalent bonds, such as that between hydrogen and oxygen atoms, as they are in an ionic bond.
Related Questions
Describe the formation of a hot spot?
Please help!
Answers
Answer:
A volcanic "hotspot" is an area in the mantle from which heat rises as a thermal plume from deep in the Earth. High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes.
What would happen to the rate of the forward reaction if the concentration of nitrogen were decreased?.
Answers
Answer:
The reaction rate would decrease
Explanation:
What would happen to the rate of the forward reaction if the concentration of nitrogen were decreased? The reaction rate would decrease . What will happen to the rates of the forward and reverse reactions when a catalyst is added? Both forward and reverse rates increase.
Why are molecular solids not expanded to conduct electricity
Answers
The molecular solids can not expand to conduct electricity because there are small distances between the atoms and also their bonds are very strong, both characteristics make the movement of particles very small (they only vibrate in place), and that also causes the electrons to be attracted to the atoms with greater force and therefore they do not move easily.
Considering the stereochemistry of the inteediate I below, which of the products would you expect. Explain your answer.
Answers
The expected product is (R)-2-bromobutane.
Stereochemistry plays a crucial role in determining the outcome of chemical reactions. In the given question, the stereochemistry of the intermediate I needs to be considered to determine the expected product.
The intermediate I indicates a chiral carbon center, denoted by an asterisk (*), which means it has four different substituents attached to it. This chiral carbon results in two possible stereoisomers: (R)-2-bromobutane and (S)-2-bromobutane.
When a reaction occurs at a chiral carbon, the stereochemistry of the reactant is usually retained in the product, assuming no racemization or inversion takes place during the reaction. In this case, the intermediate I has an (R) configuration, which implies that the product will also have an (R) configuration.
Therefore, the expected product is (R)-2-bromobutane.
Learn more about (R)-2-bromobutane.
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1. When NaCl are diolved in water, the freezing point i found to be - 0. 26°C. What i the omolarity for thi olution?
The K for water i 1. 86
Answers
The freezing point of water after NaCl has been dissolved in it is determined to be - 0.26°C. This solution has a 0.02 mol molarity.
The molality is the proportion of solute, in your case sodium chloride, NaCl, to solvent, in this case water, expressed as the number of moles per kilogram.
Utilizing the substance's molar mass will allow you to determine how many moles of sodium chloride are present in the sample. 25g = 1 mole of NaCl; 58.44g = 0.42 moles of NaCl
You then understand that you are dissolving many moles of sodium chloride in 20 kg of water.
To determine how many moles of solute are present in 1 kilogram of water, utilize the composition of this solution.
0.428 moles of NaCl per kilogram of water. 20 kg water
= 0.0214 moles of sodium chloride
= 0.02 mol
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How much energy is used to heat 250 g of ice from –15°C to steam at 105°C? (Hint: 5 steps, all positive)
Answers
Answer:
Explanation: Q1 = mc(ice) ΔT (ice warms)
Q2 = ms (ice melts)
Q3 = mc((water) ΔT (water warms)
Q4 = mr (water boils)
Q5 = mc(vapour)ΔT
The dog will eat more food to store fat and grow more hair.
The dog will lay in the sunlight to transpire
The dog will pant to circulate air throughout the body to cool
down
3.
The dog will grow a thick winter coat to keep warm during the
In the summer months, what is this dog's likely response to the rising temperatures?
summer
CLEAR ALL
Answers
hibernation exclamation mark
Chất nào sau đây là chất điện li mạnh trong H2O
Answers
Answer:
những lựa chọn ở đâu?
Explanation:
Hy vọng nó sẽ giúp ích;>
6. Which statement is true about scientific debates?
O A. Debates are of no use in science because they do not use scientific evidence.
B. Debates always are able to resolve the problem.
O C. They are a chance for scientists to work out different points of view.
Answers
Answer:
C
Explanation:
that's really the only one that makes any sence
The ears work with the brain and other body parts through a series of steps that help
you hear the sound of a train coming. What step must happen before your brain recognizes that this is the sound of a train moving?
Your brain sends a message through the nerves to the muscles in your legs.
Your ears send a message through the nerves to the brain.
Your leg muscles pull on the bones as you move out of the way.
Your eyes pick up the sound waves as you see the train coming.
NEED HELP ASAP 23 POINTS PLS HELP FAST
Answers
Answer: B: Your ears send a message through the nerves to the brain.
Answer:
B!!!!
Explanation:
hope this helps! :D
C5H12 +8O2 → 5CO2 + 6H2O
formula
Answers
Answer:
Complete combustion of pentane: C5H12 + 8O2 → 6H2O + 5CO2 ... balanced equation
moles C5H12 used = 10.0 g C5H12 x 1 mol/72 g = 0.139 moles pentane
moles O2 consumed = 0.139 mol C5H12 x 8 mole O2/1 mol C5H12 = 1.11 moles O2
mass O2 consumed = 1.11 moles O2 x 32 g/mole = 35.5 g O2
Si una masa dada de hidrógeno ocupa 40 litros a 700 grados torr. ¿Qué volumen ocupará a 1 atmósfera de presión? (dar la presión en atmósferas). Por favor :c
Answers
Answer:
\(V_2=36.84L\)
Explanation:
Hola,
En este caso, podemos usar la ley de Boyle, la cual nos permite analizar el comportamiento volumen-presión en un gas ideal de manera inversamente propocional:
\(P_1V_1=P_2V_2\)
Así, dado el volumen y la presión inicial, la cual se convierte a atmósferas (760 torr = 1atm), calculamos el volumen final a 1 atm como se muestra a continuación:
\(V_2=\frac{P_1V_1}{P_2}=\frac{700torr*\frac{1atm}{760torr}*40l }{1atm}\\ \\V_2=36.84L\)
Saludos!
Answer:
\(V_2=~36.84~Litros\)
Explanation:
En este caso tenemos diferentes valores de volumen y presión para un primer estado:
\(V_1=~40~Litros\)
\(P_1=~700~torr\)
Y tenemos valores de presión para un segundo estado:
\(V_2=~?\)
\(P_2=~1~atm\)
Necesitamos una relación entre volumen y presión para poder hallar nuestra incognita ( \(V_2\)). Nuestra relación es la ley de Boyle:
\(P_1*V_1=P_2*V_2\)
Ahora bien, tenemos una unidad diferente para el presión en \(P_2\) (atm), debemos hacer una conversión. Esta conversión puede hacerse si sabemos que 1 atm = 760 torr por lo cual \(P_2=760~torr\)
Ahora podemos reemplazar en la ecuación:
\(700~torr*40~Litros=760~torr*V_2\)
\(V_2=\frac{700~torr*40~Litros}{760~torr}\)
\(V_2=~36.84~Litros\)
El volumen sera de 36.84 Litros
Espero que ayude!
HELP PLS PLS PLSSSS
Energy is converted from kinetic energy to potential energy when you
ski down a hill.
climb a mountain.
run around a track.
sit at a desk in physics class
Answers
Answer:
CLIMB A MOUTAIN
Explanation:
B
process which take place when litimus paper turns white when dropped into a chlorine water
Answers
Answer:
It is called bleaching oxidation process.
4. Calculate how many moles of CO, could theoretically be produced when 10 g of glucose reacts. Show your work.
5. Calculate the number of moles of carbon dioxide actually produced. The experiment is conducted at a temperature of 318 K and a pressure of 1.0 atm. The student estimates the volume of the balloon to be 550 mL (0.55 L) after the reaction takes place.
Show your work.
6. Did all the glucose react during the experiment? Justify your answer.
7. If the student's estimate of the balloon's volume was incorrect and the actual volume was 620 mL, would the amount of glucose that actually reacted be more than or less than the amount calculated above? Explain your response.
Answers
Glucose concentration causes yeast to produce more fermentation, but when the saturation gradient is reached, carbon dioxide production stops.
A reaction is what in chemistry?Chemical processes happen when atoms create or dissolve chemical bonds. Products are the molecules that are produced as a result of a chemical reaction, whereas reactants are the ingredients that initiate one.
What is response, for instance?A chemical reaction happens when one or more substances change into one or more new substances. Consider the rust that results from the reaction between iron and oxygen. When vinegar & baking soda are mixed, sodium acetate, nitrous oxide, or water are the results.
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which group iia metal magnesium or calcium is more active
Answers
Magnesium (Mg) is more active than calcium (Ca) in Group IIA of the periodic table.The Group IIA metal that is more active between calcium and magnesium is magnesium (Mg).
Magnesium is a chemical element with the atomic number of 12 and symbol Mg. It belongs to the Group IIA alkaline earth metals in the periodic table.
Calcium and magnesium are two of the five elements in Group IIA of the periodic table that have the most outstanding chemical properties that are critical to life.Magnesium has a strong reducing effect.
Calcium is less active than magnesium because it is harder to reduce its noble gas configuration to 0, making it less electropositive and less reactive.
Magnesium, on the other hand, has a smaller radius than calcium and is more electronegative, allowing it to lose two electrons to form an Mg2+ cation with ease.
Therefore, magnesium (Mg) is more active than calcium (Ca) in Group IIA of the periodic table.
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How many match sticks will there be in the 4th picture?
Answers
Is it possible to move the atoms close enough that the nuclei come in contact?
Answers
Answer:
I believe not.
Explanation:
From what I have been told atoms can never come into contact beyond the electron barrier.
Which of the following has the LONGEST wavelength
A.) a lion growling at a frequency of 85 Hz
B.) a bass guitar playing a note at a frequency of 150 Hz
C.) a man speaking at a frequency of 520 Hz
D.) an opera singer singing at a frequency of 2100 Hz
Answers
Answer:
D.) an opera singer singing at a frequency of 2100 Hz
Explanation:
Wavelength is inversely proportional to frequency.
The one having the LONGEST wavelength is a lion growling at a frequency of 85 Hz and the correct option is option A.
What is Electromagnetic scale?The electromagnetic spectrum is a range of frequencies corresponding to wavelengths which are a few kilometres to a fraction of the size of an atomic nucleus in the spectrum of electromagnetic waves.
As a wave, light has several basic properties that describe it. One is frequency, which counts the number of waves that pass by a given point in one second.
Another is wavelength, the distance from the peak of one wave to the peak of the next. These properties are closely and inversely related: The larger the frequency, the smaller the wavelength — and vice versa.
A third is energy, which is similar to frequency in that the higher the frequency of the light wave, the more energy it carries.
Therefore, The one having the LONGEST wavelength is a lion growling at a frequency of 85 Hz and the correct option is option A.
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can someone help me with this
Answers
Answer:
phosphorous- 5
calcium- 2
nitrogen- 3 or 5
iron- 8 (transition metals use subshells as valence electrons)
argon- 8
potassium- 1
helium- 2
magnesium- 2
sulfur- 6
lithium- 1
iodine- 7
oxygen- 6
barium- 2
aluminum- 3
hydrogen- 1
xenon- 8
copper- 1
Source: my own chemistry notes
Predict the change in enthalpy due to the combustion of 10 g of propane used in a camp stove. The molar enthalpy of combustion of propane is -2043. 9 kj/mol
Answers
To predict the change in enthalpy due to the combustion of propane, we need to use the given molar enthalpy of combustion and convert the mass of propane to moles.
Given:
Mass of propane = 10 g
Molar enthalpy of combustion of propane = -2043.9 kJ/mol
To calculate the moles of propane:
Molar mass of propane (C3H8) = 3 * 12.01 g/mol (3 carbon atoms) + 8 * 1.01 g/mol (8 hydrogen atoms)
Molar mass of propane = 44.11 g/mol
Number of moles of propane = Mass of propane / Molar mass of propane
Number of moles of propane = 10 g / 44.11 g/mol
Number of moles of propane ≈ 0.226 mol
Now, we can calculate the change in enthalpy using the moles of propane:
Change in enthalpy = Number of moles of propane * Molar enthalpy of combustion of propane
Change in enthalpy = 0.226 mol * -2043.9 kJ/mol
Change in enthalpy ≈ -462.19 kJ
Therefore, the change in enthalpy due to the combustion of 10 g of propane is approximately -462.19 kJ. The negative sign indicates an exothermic reaction, meaning that heat is released during the combustion process.
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What is the other name for a helium nucleus?
Answers
Hi there.
Thanks for chosing Brainly! How are you today?
Another name for Helium Nucleus is Alpha Particle.
Alpha Particles are the same as a Helium Nuclues, just a different word usage. They have the same definitions.
Thanks for your question.
- Tutor John
If the bond angle between two adjacent hybrid orbitals is 109.5°, which is the hybridization?
a. Sp2
b. Sp3d
c. Sp3
d. Sp
Answers
If the bond angle between two adjacent hybrid orbitals is 109.5° , the hybridization is sp³ .
When s orbitals combines with three p orbitals (px, py and pz) four sp³ hybrid orbitals with similar characteristics are formed. These hybrid orbitals have a bond angle of 109.5° between them, which causes the minimum electronic repulsion between them.
An atom in which all the atoms that are bonded to it contains single bonds is an sp³ hybridized atom. For example-alkanes.
For, sp³ hybridized central atoms, the molecular geometry is a tetrahedron. But, if the geometry is distorted due to lone pairs then trigonal pyramidal or bent geometry is formed.
Thus, option "c" is correct.
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This represents the composition of a substance expressed as a percent.
Answers
Answer:percent composition
Explanation:
At 25 °C, an aqueous solution has an equilibrium concentration of 0.00343M for a generic cation, A+(aq), and 0.00343M for a generic anion, B−(aq). What is the equilibrium constant, sp, of the generic salt AB(s)?
Answers
\( \:\:\:\:\:\:\star \)For the general solubility equilibrium \(\sf \underline{AB \longrightarrow A^+ + B^-} \)the solubility product has the following expression-
\( \:\:\:\:\:\:\star\longrightarrow \sf\underline{K_{(sp)} = [A^+] \times [B^-]}\\\)
As per question, we are given that-
Equilibrium concentration for generic cation,\(\sf [A^+]\)= 0.00343MEquilibrium concentration for generic anion, \(\sf [B^-] \)= 0.00343M\( \:\:\:\:\:\:\star \) Now that we have all the required values, so we can substitute these values into the Ksp expression and solve for Ksp-
\( \:\:\:\:\:\:\star\longrightarrow \sf\underline{K_{(sp)} = [A^+] \times [B^-]}\\\)
\( \:\:\:\:\:\:\longrightarrow \sf K_{(sp)} = 0.00343 \:M\times 0.00343\:M\\\)
\( \:\:\:\:\:\:\longrightarrow \sf K_{(sp)} = 0.00343 \:molL^{-1}\times 0.00343\:molL^{-1}\\\)
\( \:\:\:\:\:\:\longrightarrow \sf \underline{K_{(sp)} = 1.17649\times 10^{-5} \: mol^2L^{-2}}\\\)
Hence, the equilibrium constant(Ksp) of the generic salt AB(s) is \(\sf\underline{\boxed{\sf1.17649\times 10^{-5} \: mol^2L^{-2}}}.\\\)1 Samples of four gases are released in a room at the same time.
The gases are carbon dioxide, CO₂, hydrogen chloride, HCl, hydrogen sulfide, H₂S, and nitroge
dioxide, NO₂.
Which gas diffuses fastest?
Answers
Answer:
H2S
Explanation:
The gas with the smallest molar mass diffuses the fastest (assuming that the holes are the same size and that gasses act ideally).
Find the molar mass of each of the gasses, and then compare.
CO2 = 12 + 16 + 16 = 32 + 12 = 44
HCl = 35.45 + 1 = 36.45
H2S = 1 + 1 + 32 = 34
NO2 = 14 + 16 + 16 = 32 + 14 = 46
Therefor, H2S diffuses the fastest, then HCl, then CO2, and finally NO2
What functional group accounts for the acidic behavior in vinegar?.
Answers
The answer is carboxyl group
6. (20 pts) Provide a synthetic route to prepare the target molecule using the malonic ester synthesis. All the carbon in the product must derive from the given starting materials, but you can use any other necessary reagents.
Answers
Answer: Hello some data related to your question is missing attached below is the missing data
answer : attached below is the detailed solution ( synthetic route
Explanation:
Attached below is the synthetic route for the preparation of the target molecule and
we will perform a coupling reaction to get the Final product as seen in the question
Chemicals can be harmful. therefore, when working with a new chemical in lab, what should you always do prior to lab?
Answers
Due to chemicals can be harmful, when we are going to work with a new chemical in lab, we always should to do the following:
We must know the characteristics and properties of the chemical: we could find this information in the Safety Data Sheet (SDS).According to the properties, characteristics and hazards of the chemical we have to prepare and use the correct equipment for personal protection.Learn what is the best way to manipulate the type of chemical that we are going to work in the labLearn what to do in case of an accident manipulating the chemical during the lab practice.What is a safety data sheet?We can say that a safety data sheet (SDS) is an important document that describes the physical and chemical properties of a chemical substance.
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I need a little help in Chemistry :)
Answers
Answer:
29.3
Explanation: