What orbitals overlap to form the c-h bond in ethene (h 2c=ch 2)? s-p p-p s-sp3 s-sp2 s-sp
Answers
The orbitals overlap to form the c-h bond in ethene, the s-sp2 orbital overlaps to create the C-H bond.
What is sp2 hybridisation?
Three sp2 orbitals, each with a 33% s character and a 67% p character, are created when one s orbital and two p orbitals hybridize. When an atom has three electron groups surrounding it, this kind of hybridization is necessary.
Trigonal hybridization is another name for the sp2 process. One's' orbital and two 'p' orbitals of equivalent energy are combined to create the new hybrid orbital known as sp2. At 1200, a combination of s and p orbitals developed in trigonal symmetry.
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Related Questions
When lithium reacts with bromine to form the compound LiBr, each lithium atom:
a) gains one electron and becomes a negatively charged ion
b) gains three electrons and becomes a negatively charged ion
c) loses one electron and becomes a positively charged ion
d) loses three electrons and becomes a positively charged ion
Answers
When lithium reacts with bromine to form the compound LiBr, each lithium atom loses one electron and becomes a positively charged ion. The correct option is c.
When lithium reacts with bromine to form lithium bromide (LiBr), each lithium atom loses one electron. This electron loss results in the lithium atom becoming a positively charged ion, specifically a lithium ion (Li+).
Bromine, on the other hand, gains one electron to achieve a stable electron configuration and becomes a negatively charged ion, specifically a bromide ion (Br-).
The transfer of one electron from lithium to bromine allows both elements to achieve a more stable configuration by filling their outermost energy levels.
This electron transfer creates an ionic bond between the positively charged lithium ion and the negatively charged bromide ion, resulting in the formation of the compound LiBr.
In summary, during the reaction between lithium and bromine, each lithium atom loses one electron and becomes a positively charged ion.
Therefore, the correct option is C, loses one electron and becomes a positively charged ion.
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Na2S(aq)+Cd(NO3)2(aq) 2NaNO3(aq)+CdS(s)
Sodium sulfide is the limiting reactant. Select the substances that are found in the test tube after the reaction has ended.
A) Na2S
B) Cd(NO3)2
C) NaNO3
D) CdS
Answers
1. Explain what is in a buffer. Discuss the function of a buffer. How will pH change when small amounts of acids or bases are added to the buffer solution? 2. Cooks use baking soda to make cakes light and fluffy. You might have used baking soda yourself. Baking soda is NaHCO3. A 0.1 M solution of baking soda in water has a [H+] of about 4.0 × 10–9. (You may prefer to think of the hydronium ion concentration, [H3O+], as 4.0 × 10–9.) Write the formula for the calculation of pH, and then show each step as you calculate the pH of a 0.1 M solution of baking soda. 3. Before tackling this problem, be sure you know how to find the antilog of a number using a scientific calculator. A solution has a pH of 5.4. Write the formula you will use to calculate the [H+] and then show all your work leading to the determination of [H+].
Answers
Answer:
(1) See below, (2) About 8.4 pH, (3) About 3.981 * 10⁻⁶ mol dm⁻³
Explanation:
1. A buffer is a solution that resist pH when adding a basic or acidic compound. It's purpose is to neutralize added acids and bases.
2. Remember that the formula for pH is -log [H+]. We have a 0.1 M solution of baking soda in water with [H+] of about 4.0 × 10⁻⁹. Therefore we can calculate the pH as follows...
pH = -log (4.0 × 10⁻⁹)
pH = -(-8.39794...) = (About) 8.4 pH of 0.1 M of baking soda
3. This question has a similar set up...
pH = -log [H+]
[H+] = inverse of log^- pH
[H+] = 10^-5.4 = (About) 3.981 \(*\) 10⁻⁶
Two isotopes of potassium are K-37 and K-42. Explain, in terms of subatomic particles, why K-37
and K-42 are isotopes of potassium.
Answers
PLEASE HELPPPP I WILL GIVE BRAINLIST
Answers
The possible values of the quantum numbers are:
Orbital shape quantum number l: 0, 1, 2, 3, 4, or 5.
Magnetic quantum number m: -l to +l.
Spin quantum number, s: +1/2 or -1/2.
What are the azimuthal, magnetic, and spin quantum numbers of the valence electrons in an atom with principal quantum number, n = 6?For the principal quantum number n = 6, the possible values of the azimuthal (orbital shape) quantum number l are 0, 1, 2, 3, 4, and 5.
The magnetic quantum number m can have values ranging from -l to +l, inclusive.
The spin quantum number, s can be either +1/2 or -1/2.
So, the valence electrons in an atom with principal quantum number n = 6 can have the following quantum numbers:
Azimuthal quantum number, l can be 0, 1, 2, 3, 4, or 5.
Magnetic quantum number, m can range from -l to +l, inclusive.
Spin quantum number, s can be either +1/2 or -1/2.
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isn't the activity in Bq
Answers
in this activity, you will complete a virtual experiment to determine how the temperature of water affects the time it takes for antacid tablets to dissolve. pre-lab questions 1. how does an increase in concentration affect a chemical reaction? 2. when temperature increases, what happens to the molecules in a chemical reaction? 3. how do we measure the average kinetic motion of molecules in a solution?
Answers
1. An increase in concentration increases the speed of reaction.
2. When temperature increases, average speed of molecules increases.
3. Average kinetic motion of molecules in a solution can be measured by measuring the heat in the solution.
As concentration increases, number of molecules in the solution increase, hence the reaction becomes faster. Since these factors increase in value, the frequency of collisions between the reactant molecules in the solution will increase, so the probability of collisions in right orientation and with right energy will be higher. Increase in temperature will increase the average speed and kinetic energy of the molecules in solution. At constant volume, increased speed of reactant molecules in the solution will increase the probability of collisions in right orientation and right energy. Average kinetic energy of molecules in a solution can be measured using the equation, E=kT , where k = Boltzmann constant.
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Please help, and can you tell, if some my answers are correct?
Answers
write the term symbol for the ground state of the he atom. enter your answer as a term symbol. for example, for 1s1/2 enter ^1s (1/2).
Answers
The term symbol for the ground state of helium is \(^1s (0)\).
The term symbol for the ground state of the helium (He) atom is \(^1s (0)\). The term symbol represents the electronic configuration of an atom's ground state, providing information about the total angular momentum quantum number (s, p, d, etc.) and the spin quantum number (1/2 or -1/2).
In the case of helium, the ground state electronic configuration is \(1s^2\), meaning it has two electrons in the 1s orbital. Since the orbital angular momentum quantum number (L) for the 1s orbital is 0, the total angular momentum quantum number (J) is also 0.
The superscript 1 represents the multiplicity, indicating that the term is a singlet state with a total spin quantum number (S) of 0. The subscript S (0) signifies that the term has no orbital angular momentum.
Therefore, the term symbol for the ground state of helium is \(^1s (0).\)
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What is the volume of the apple?
1. 7ml
2. 10ml
3. 3ml
4. 17ml
Answers
Answer:
3ml
Explanation:
10ml-7ml=3ml
Calculate the work done when 50. 0g of tin diolve in exce acid at 1. 00 atm and 25C
Sn() 2H(aq) ___ Sn²(aq)H2(g)
Answers
Work done when 50. 0g of tin dissolved in excess acid at 1. 00 atm and 25 °C is 1926 kJ
What does it mean when W = P Delta V?W=−PΔV. The system is losing energy because of the negative sign caused by PV work. The system has done negative work if the volume increases at constant pressure (V > 0), indicating that it has used up energy by working on its surroundings.
It follows the system's path. W = P d V is the work done expression.
At 1,00atm and 303,15K (30°C), the volume of these moles of gas is:
V = nRT/P
V = 7,648mol×0,082atmL/molK×303,15K / 1,00atm
V = 190,1L
That means that ΔV is:
190,1L - 0L = 190,1L
And the work done is:
W = 1atm×190,1L = 190,1atmL = 1926 kJ
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Work done when 50. 0g of tin dissolved in excess acid at 1. 00 atm and 25 °C is 1926 kJ
What does it mean when W = P Delta V?W=−PΔV. The system is losing energy because of the negative sign caused by PV work. The system has done negative work if the volume increases at constant pressure (V > 0), indicating that it has used up energy by working on its surroundings.
It follows the system's path. W = P d V is the work done expression.
At 1,00atm and 303,15K (30°C), the volume of these moles of gas is:
V = nRT/P
V = 7,648mol×0,082atmL/molK×303,15K / 1,00atm
V = 190,1L
That means that ΔV is:
190,1L - 0L = 190,1L
And the work done is:
W = 1atm×190,1L = 190,1atmL = 1926 kJ
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What is this mixture made up from? Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
Answers
A solution is just a specific type of mixture, in particular it is a homogeneous mixture in liquid form.
Hope that helped!
Draw the major organic product of each reaction. Assume a one-to-one ratio of reagents and benzene.For the functional groups added, be sure to draw out all bonds, lone pairs, and formal charges. (Note: the short-cut for NO2 will not be accepted for this question) Did you draw just one compound in each box? Does the organic product contain all bonds, lone pairs and nonzero formal charges? Which electrophile is formed in each route?
Answers
Secondary amine is what it is. Option (B3-dimethylbutan-2-amine )'s is the primary organic product created during the following reaction. Thus, if more hydrogen is added to carbon, we will obtain the main product, according to the Markovnikov Rule.
As a result, the main product produced by adding hydrogen to carbon-1, which has a higher concentration of hydrogen, and adding bromine to carbon-2 is 2-bromopropane. When a reaction follows Markovnikov's rule, a chemical or product is said to be a major organic product. The tertiary alkyl iodide is the largest byproduct of the second process, which transforms alcohol into alkyl iodide, while the secondary alkyl iodide is the minor byproduct.
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Need Help!!
Explain the relationship between volume and temperature (Charles’ Law)
Answers
Answer:
the volume of a give gas simple is directly propotional assolute temperature at constant pressure .the volume of a gavi. amount of gass is inversely propotional ot Its pressure when temperature is help constant
Compare the compressibility of solids and liquids. Support your answer by describing the arrangement of particles in solids and liquids.(Does,t need to be very long or detailed)
Answers
Liquids are more compressible than solids.
In liquids there is space between the molecules, not a lot, but there is enough space to offer some compressibility. Solids are arranged in regular patterns and their molecules are almost fixed close together.
Using salt and ice to make ice cream is an example of:
Answers
Answer:
An exothermic reaction
Explanation:
Help with theses two different problems!
1.) 125mL of what is added to 45.3mL of 0.71m NaOH solution
2.) 550mL of water is added to 125mL of 3.01M KOH solution
Answers
1. the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.
2. the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.
1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.
First, let's calculate the moles of NaOH in the initial solution:
moles of NaOH = volume (in L) × concentration (in M)
moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles
After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.
To find the final concentration, we divide the moles of NaOH by the total volume:
final concentration of NaOH = moles of NaOH / total volume
final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M
Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.
2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.
First, calculate the moles of KOH in the initial solution:
moles of KOH = volume (in L) × concentration (in M)
moles of KOH = 0.125 L × 3.01 M = 0.37625 moles
After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.
To find the final concentration, divide the moles of KOH by the total volume:
final concentration of KOH = moles of KOH / total volume
final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M
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if your water heater can supply 40 kbtu/h (thats kilo-btu/h), how long will it take to heat this water?
Answers
If a water heater can supply 40 KBTU/h then it will take 35.64 second to heat the water. This is calculated using the specific heat of water and the power concept.
The electrical energy is used totally depends on the total power used by all the electrical devices and the total time they are used. One kilowatt hour is equal to 1000 watts of power used for one hour of time.
time taken= energy required/ power delivered
System is used to define the measurement of a physical quantity. It is termed as the unit. Different types of unit measurement systems used are the SI unit system, MKS unit system, Imperial unit system, British unit system, etc.
1 BTU = 1055.6 J
Specific heat of water Cw. = 4186 J/Kg.
Time taken = energy required / power
= 100 . Cw. / 1055.6 * 40*
= 100 * 4186 / 1055.6 * 40 .
= 9.9 * hours
= 35.64 sec
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After which reaction. is there solid left in the reaction chamber
a)Sodium Azide
b)Ammonium Nitrate
c)Nitroglycerin
d)Both A & B
Answers
Answer:
B.
Explanation:
If we add more SO2 gas to the reaction chamber. To the left. The reaction would drive
backwards to re-establish equilibrium (more reactants made).
Regina has avoided working on her term paper all semester, and now she has only one week to write it. She identifies her goal and hastily writes it down: I will make an A on my English literature term paper that is due next week. Then, she starts breaking her goal into specific daily tasks. Where is the flaw in Regina’s plan?
She hasn’t broken her big goal into small enough pieces.
Her time frame is not realistic.
Her goal is not specific enough.
She has not written her goal enough times.
Answers
The flaw in Regina’s plan is that the time frame is unrealistic (option B).
What is goal setting?Goal setting involves the development of an action plan designed in order to motivate and guide a person or group toward a goal, which is a result that one is attempting to achieve.
Effective goal setting lets you measure progress, overcome procrastination and visualize your dreams. However, setting goals is said to be effective when it is done in an adequate time frame.
According to this question, Regina identifies her goal and hastily writes it down as follows: I will make an A on my English literature term paper that is due next week.
This goal, although is great, is unlikely to be met because of the time frame. One cannot get an excellent result in something that lacks adequate preparation, which includes adequate time.
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How many milliliters of a 0.80mM ammonium hydroxide solution are required to create 2.0L of 0.30mM solution? Do not include units in the answer. Your answer should have two significant figures.
Answers
To make 2.0L of a 0.30mM solution, \(6.4 \times 10^3\) millilitres of a 0.80mM ammonium hydroxide solution are needed.
What is ammonium hydroxide?An aqueous solution containing ammonium (\(NH_4\)) and hydroxide (\(OH^-\)) ions is known as ammonium hydroxide. Because it is a strong base, it totally dissociates in aqueous solutions, resulting in an alkaline reaction.
Ammonium hydroxide is utilised in a wide range of commercial and domestic applications, including the production of cleaning agents. It can be used for cleaning, deodorising, and bleaching, among other things. It serves as a dough conditioner and an
acidity regulator in the food sector.
\(6.4 \times 10^3\)
Let x = 0.80 mM ammonium hydroxide solution in millilitres is needed.
We know that molarity (mM) = moles/L
Given:
\(M_1\) = 0.80 mM
\(M_2\) = 0.30 mM
\(V_2\) = 2.0 L
As a result, we may construct the equation shown below:
(0.80 mM)(x mL) / (1000 mL/L) = (0.30 mM)(2.0 L)
Solving for x, we get:
x = \(6.4 \times 10^3\) mL
In order to produce 2.0L of 0.30mM solution, \(6.4 \times 10^3\) mL of a 0.80mM ammonium hydroxide solution are needed.
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Which question can be answered by science?
Group of answer choices
Why should we help those less fortunate than us?
Which type of candy tastes the best?
Which kind of backpack do students purchase most often?
Why are children happy when they get home from school?
Answers
Answer:
C.
Explanation:
Water absorbs energy when it undergoes___
A. freezing
B. deposition
C. condensation
D. melting
Answers
Answer:
d. melting
As heat enters the water the particles move much faster, bumping into each other. Therefore, more heat means more energy!
Hopesthis helps!
The picture below shows what a driver sees in his side view mirror.
Indicate whether each statement is TRUE.
Select all that apply
REALLY URGENT
the mirror causes the van behind to appear further away than it really is.
The mirror allows the driver to see a wide area behind him.
The mirror causes the van behind to appear nearer than it really is.
The mirror causes the van behind to appear smaller than is really is
The mirror causes the van behind to appear larger than it really is.
35
Answers
Answer:
True- Mirror causes van to appear closer
Explanation:
Objects in the rear view mirror appear closer than they really are.
Vision and area are limited by the mirrors.
pls help asap you can!
Answers
The frequency of the color light, given that it has a wavelength of 5.0×10⁻⁷ m is 6.0×10¹⁴ Hertz (last option)
How do i determine the frequency of the color light?First, we shall list out the given parameters from the question. This is shown below:
Wavelength of color light (λ) = 5.0×10⁻⁷ mSpeed of color light (v) = 3×10⁸ m/sFrequency of color light (f) =?Speed, wavelength and frequency of wave are related by the following formula:
Velocity (v) = wavelength (λ) × frequency (f)
Inputting the given parameters, we can obtain the frequency as shown below:
3×10⁸ = 5.0×10⁻⁷ × frequency
Divide both sides by 5.0×10⁻⁷
Frequency = 3×10⁸ / 5.0×10⁻⁷
= 6.0×10¹⁴ Hertz
Thus, we can conclude that the frequency of the color light is 6.0×10¹⁴ Hertz (last option)
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Your teacher give you a bag of white powder with 0.396 moles written on it. You weigh the white powder and the scale says 80.0 g. Your teacher tells you that is one of the substances below. What is the substance?
NaCl (table salt)
NaHCO3 (baking soda)
Na2B4O7 (borax)
Answers
Answer:
NACI
Explanation:
because it it
Something your grateful for and 5 reasons why?
Answers
Answer:
Good Health. Even if your health isn't great, it could be worse and you likely still have some working parts to be thankful for.
Good Friends.
Your Parents.
Freedom of Religion.
Explanation:
Do Elements retain their properties when they form a compound?
Answers
Answer: No
Explanation:
The components of a compound do not retain their individual properties.
HELP ME!!!!
Which item in Figure 1 expanded the least when heated?
steel
oak
aluminum
glass
Answers
Answer:
glass your welcome
Explanation:
Which correctly lists the three elements that geologists measure to determine the age of an organism's remains ?
O argon, nitrogen, and carbon-12
O carbon-14, nitrogen, and carbon-12
O nitrogen, potassium, and carbon-14
O carbon-12, potassium, and argon
Answers
Answer:
carbon-12, potassium, and argon
Explanation:
The three elements that geologists measure to determine the age of an organism's remains are carbon-12, potassium, and argon.
So, the second option is correct one.
How scientist determine age of the organism?The scientist determine the age of an organism by radiocarbon dating and nitrogen.After death of organisms, total carbon -14 content slowly disappearsIn radiocarbon dating, amount of carbon-14 left in organism is calculated relative to carbon-12 .To learn more about elements here,
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