Write the abbreviated electron configuration for Al2+.

Answers

Answer 1

The abbreviated electron configuration for Al2+ is [Ne]3s2 3p1

since Al has 13 electrons :  [Ne]3s2 3p1

Al2+ means it has lost 2 electrons to become :  [Ne]3s1

what is electron configuration?

Electronic configurations in chemistry can be describe as the way each electron move independently in an orbital, in an average field created by all other orbitals. which also means  the arrangement of electrons in orbitals around an atomic nucleus.

what is an electron?

An electron in simple term is a negatively charged subatomic particle that binds together with protons and neutrons  to form an atom's nucleus. it can also be seen as a tiny particle of matter that is smaller than an atom and has a negative electrical charge in it.

learn more about electron configuration here:

brainly.com/question/26084288

#SPJ1


Related Questions

3. Calculate the number of nickel atoms in a 5-cent coin of mass 0.942g if it was made of an alloy consisting of 75% copper and 25% nickel

Answers

Answer:

2.41x10²¹ atoms

Explanation:

mass of nickel that are present in the coin can be determined Using ( 25% nickel) with j mass of coin= 0.942g )

mass of nickel = (0.942g) × (25/100)

= 0.2355g of Nickel

We need to convert this " gram" into " moles"

Mole= mass/ molar mass

Molar mass= 58.69 g/mol

0.2355 g) / (58.69 g/mol)

= 0.004 mol

We need to convert the moles to

number of atoms.

Avogadro's number= 6.023x10²³ atoms/mol

(0.004 × 6.023x10²³ atoms/mol)

=2.41x10²¹ atoms

One city is located north of the equator and experiences average rainfall and warm temperatures. Another city is located exactly the same distance from the equator, but south. How will these two climate areas be the same or different? (2 points)

a. The temperature and precipitation will both differ.
b. The temperature and precipitation will be similar.
c. The temperature will differ but the precipitation will be the same.
d. The precipitation will differ but the temperature will be the same.

Answers

Answer: is A i pretty sure...

Explanation:

In the two climate areas, the  temperature and precipitation will both differ as they are situated differently wit respect to equator.

What is precipitation?

Precipitation is defined as any liquid or frozen water which forms in the atmosphere and then gets received on Earth.It is one of the most important steps of the water cycle.

Precipitation takes place in form of clouds when water vapor gets accumulated in clouds and they get bigger and heavy, when the clouds become heavy enough they fall to the land in the form of rain.f a cloud is present at higher altitudes , the water present in the clouds freezes and fall to the ground in form of snow,hail.

Precipitation occurs always in case of fresh water because the sea salt does not evaporate with the water.The different types of precipitation are rain, drizzle,snow,snow hail,etc.

Learn more about precipitation,here:

https://brainly.com/question/20925010

#SPJ6

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 133 mL of ethanol?

Answers

Given:

[tex]V = \text{133 mL}[/tex]

[tex]\rho = \text{0.789 g/mL}[/tex]

Required:

[tex]m[/tex]

Solution:

[tex]\rho = \frac{m}{V}[/tex]

[tex]m = \rho V[/tex]

[tex]m = (\text{0.789 g/mL})(\text{133 mL})[/tex]

[tex]\boxed{m = \text{105 g}}[/tex]

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL.  105g is the mass, in grams, of 133 mL of ethanol.

What is mass?

In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the force that is applied. The change caused by a force applied is smaller the more mass a body has.

The kilogram, which would be specified as equivalent to 6.62× 10³⁴ joule second in terms of Planck's constant, is the unit of mass inside the International Units System (SI).

density = mass / volume

mass =density× volume

         = 0.78× 1.33

         =105g

Therefore, 105g is the mass.

To know more about mass, here:

https://brainly.com/question/28704035

#SPJ2

How many moles are in 454 grams of dinitrogen trioxide (N2O3) ?

Answers

Answer:

5.97 mol

Explanation:

To find the number of moles when given the mass of a substance, we divide the mass of the sample by its molar mass.

so, we get,

nN203 = 454 g / 76.01 g /mol

= 5.97 mol

Consider the reaction of tin with potassium hydroxide and water. Sn (s) 2KOH (aq) 4H2O (l) K2Sn(OH)6 (s) 2H2 (g) Determine the limiting reactant in a mixture containing 122 g of Sn, 134 g of KOH, and 63.9 g of H2O. Calculate the maximum mass (in grams) of potassium hydroxystannate, K2Sn(OH)6, that can be produced in the reaction. The limiting reactant is:

Answers

Answer:

The limiting reactant is: H₂O

265.3 g of K₂Sn(OH)₆ are formed in the reaction.

Explanation:

The reaction is:

Sn(s) + 2KOH (aq) + 4H₂O(l)  → K₂Sn(OH)₆ (s) + 2H₂ (g)

The first step to solve is to determine the moles of each reactant:

We controlled that reaction is ballanced.

122 g . 1mol / 118.71g = 1.03 moles of Sn

134g . 1mol /56.1g = 2.39 moles of KOH

63.9 g .1mol /18g = 3.55 mol of water

Stoichiometry is 1:2:4.

Sn is the lowest reactant and water, the highest, but I can see, that water is the limiting.

1 mol of Sn needs 4 moles of H₂O to react

Then, 1.03 moles of Sn may react to (1.03 . 4)/1 = 4.12 moles.

We only have 3.55 moles. It's ok.

2 moles of KOH need 4 moles of H₂O to react

Then, 2.39 moles of KOH may react to (2.39 . 4) /2 = 4.78 moles.

We only have 3.55, there's no enough water.

So 4 moles of water can produce 1 mol of potassium hydroxystannate

Then, 3.55 moles of H₂O may produce (3.55 . 1)/4 = 0.8875 moles.

We convert moles to mass: 0.08875 mol . 298.91g /1mol =265.3g

URGENT PLZ HELP

Which of the following statements is true?

a. In an endothermic process heat is transferred from the surroundings to the
system.

b. In an exothermic process heat is transferred from the surroundings to the
system.

C. The surroundings will feel cooler in an exothermic process.

d. The surroundings will feel warmer in an endothermic process.

Answers

Answer:

A.

Explanation:

In an endothermic reaction heat is applied.

In an endothermic process, heat is transferred from the surroundings to the system.

What are endothermic and exothermic processes?

An exothermic process is one that gives off heat. This heat is transferred to the surroundings. An endothermic process is one in which heat has to be supplied to the system from the surroundings.

The endothermic process is a term that describes a reaction where the system absorbs the energy from its surrounding in the form of heat. A few examples of the endothermic process are photosynthesis, evaporating liquids, melting ice, etc.

The exothermic reaction is the opposite of an endothermic reaction. It releases energy by light or heat to its surrounding. A few examples are neutralization, burning of a substance, reactions of fuels, etc.

Hence, option A is the correct answer.

Learn more about endothermic and exothermic processes here:

https://brainly.com/question/4345448

#SPJ2

How many grams of carbon dioxide are produced when 100 grams of methane undergoes complete combustion's?

Answers

Answer: 1 mol of methane is 16 grams. Therefore, if you have 100 grams of methane, it means that you have 10016=6.25 moles of methane. When you burn 6.25 moles of methane, you produce 6.25 moles of carbondioxide.

Explanation:

What volume (in mL) of concentrated HCl (12 M) is needed to make 1500 mL of a 3.5 M solution?

Answers

Answer:

437.5 mL

Explanation:

Concentration (c) = Moles (n) / Volume of solution (liters)

C = n / V

rearrange the formula to find out how many moles you need in the final solution.

n (moles) = concentration (c)   x   Volume (V)   ( in liters)

Convert your mL into L.  1500mL is 1.5L

n = 3.5 moles/liter  x  1.5 liters  (the liters cancel each other out)

n = 5.25 moles

Now use the same formula to calculate the volume you need to make the final solution based on the concentration of the original.

c = n/V  or   V = n / c

V = 5.25 moles / 12 moles/liter     here the moles cancel out

V = 0.4375 L

convert back to mL

V = 437.5 mL

how can landforms be weathered?

Answers

Answer:

they can become smaller or start fall apart or aroud

Explanation:

A- south
B- north
C-west
D- east
Help ASAP no links or I’m reporting

Answers

Answer:

east

Explanation:

PLEASE HELPPP WILL GIVE 10 PTS AND MARK BRAINIEST TO RIGHT ANSER!!!!!
Roasted coffee beans contain over_____________ chemical compounds

A) 10000000
B) 1000000
C) 1000
D) 10000

Answers

Answer:

C. 1000

l think this is correct answer

l hope it's helpful for you


1. The octane present in gasoline burns according to the following equation:

2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

(a) How many moles of O2 are needed to react fully with 27.5 moles of octane?

Answers

Answer:

[tex]n_{O_2}=343.75molO_2[/tex]

Explanation:

Hello there!

In this case, according to the combustion of octane:

[tex]2C_8H_1_8+25O_2\rightarrow 16CO_2+18H_2O[/tex]

We can see there is a 2:25 mole ratio of octane to oxygen; therefore, we can calculate the moles of oxygen via the following stoichiometric factor:

[tex]n_{O_2}=27.5molC_8H_1_8*\frac{25molO_2}{2molC_8H_1_8} \\\\n_{O_2}=343.75molO_2[/tex]

Best regards!

What is the formula for sodium selenide?

Answers

The formula for sodium selenide is Na2Se

Basic Stoichiometry
Part 1: Mole ←→ Mass Conversions
Choose 2: Convert the following number of moles of chemical into its mass in grams.
1. 0.436 moles of (NH4)Cl = ______g
2. 0.50 moles of Ca(NO3)2 = ______g
Choose 2: Convert the following masses into their corresponding number of moles.
3. 23.5 g of NaCl = ______moles
4. 79.9 g of KMnO4 =______moles
5) The combustion of a sample of butane, C4H10 (lighter fluid), produced 2.46 grams of water.

Answers

Answer:

1. 23.3 g

2. 82 g

3. 0.402 mol

4. 0.506 mol

Explanation:

We can convert moles (n) to mass (m) using the following expressions that include the molar mass (M).

n = m/M

m = n × M

1. The molar mass of NH₄Cl is 53.49 g/mol.

m = 0.436 mol × 53.49 g/mol = 23.3 g

2. The molar mass of Ca(NO₃)₂ is 164.09 g/mol.

m = 0.50 mol × 164.09 g/mol = 82 g

3. The molar mass of NaCl is 58.44 g/mol.

n = 23.5 g/(58.44 g/mol) = 0.402 mol

4. The molar mass of KMnO₄ is 158.03 g/mol.

n = 79.9 g/(158.03 g/mol) = 0.506 mol

How deep below Earth's surface do rocks melt?
A. 1000 km
O B. 50 m
C. 500 km
D. 50 km

Answers

The answer is D. 50 km

How many molecules are there in a candle wax

Answers

Answer:

6

Explanation:

LEVEL 3
Write the correct order
of letters to the finish line.
A E B E C
Example:
ABCGH
G
H
N
eza


Not correct

Answers

ANSWER - AEGHNZ (is that right?
look this is on quizlet

what are twin primes between 1 to 100

Answers

The twin primes between 1 and 100 are; (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73). Hope this helped<3

Classify each statement as a property of ethers, alcohols, or both ethers and alcohols?
1. These compounds form hydrogen bonds between themselves and with other compounds containing an O-H, N-H, or F-H bond, such as water.
2. These compounds are water soluble if they have fewer than four carbon atoms.
3. When comparing ethers and alcohols of similar molecular weights, these compounds have the lower boiling point.

Answers

Explanation:

1. Only alcohols forms hydrogen bond  between themselves and with other compounds containing an O-H, N-H, or F-H bond, such as water.

2. Alcohols up to 4 carbons are miscible in water because they have hydrogen bonded to oxygen and can form hydrogen bond with water. However, it is not possible for ethers.

3. When comparing ethers and alcohols of similar molecular weights, ethers have lower boiling point than alcohol. This is because of the presence of hydrogen bond in alcohols.

The given statements can be classified as a property of both(ether and alcohol), both(ether and alcohol), and ether, respectively.

The given property of ethers, alcohols, or both ethers and alcohols are classified as:

This statement is a property of both ethers and alcohols. Both ethers and alcohols can form hydrogen bonds due to the presence of oxygen atoms in their molecules, which can interact with other compounds containing O-H, N-H, or F-H bonds, such as water.This statement is a property of both ethers and alcohols. Both ethers and alcohols can be water-soluble if they have fewer than four carbon atoms. The presence of the oxygen atom in ethers and alcohols allows them to form hydrogen bonds with water molecules, increasing their solubility.This statement is a property of ethers. When comparing ethers and alcohols of similar molecular weights, ethers generally have lower boiling points than alcohols. This is because ethers do not have hydrogen atoms directly bonded to the oxygen atom, which reduces the strength of intermolecular hydrogen bonding compared to alcohols. As a result, ethers have weaker intermolecular forces and lower boiling points.

Hence, the statements can be classified as shown above.

Learn more about ethers and alcohols here:

https://brainly.com/question/31986508

#SPJ6

What must happen in order for water to change state?
A. It must maintain its thermal energy level.
B. It must absorb or release energy.
C. It must be insulated.
D. It must convert thermal energy to solar energy.

Answers

Answer:

B

Explanation:

if it releases energy it becomes a solid(Solid)

if it absorbs energy it becomes a gas(Water Vapor)

A 5.0 g sample of a pesticide was decomposed with metallic sodium in alcohol, and the liberated chloride ion was precipitated with AgCl. Express the results of this analysis in terms of percent DDT (C14H9Cl5, molar mass, 354.72 g/mol)) based on the recovery of 0.1606 g of AgCl

Answers

Answer:

1.59%

Explanation:

First, we convert 0.1606 g of AgCl into moles, using its molar mass:

0.1606 g ÷ 143.32 g/mol = 1.12x10⁻³ mol AgCl

Then we convert the calculated moles of Cl (equal to AgCl moles) into moles of DDT:

1.12x10⁻³ mol Cl * [tex]\frac{1molDDT}{5molCl}[/tex] = 2.24x10⁻⁴ mol DDT

Now we convert 2.24x10⁻⁴ moles of DDT into grams, using its molar mass:

2.24x10⁻⁴ mol DDT * 354.48 g/mol = 0.0794 g

Finally we calculate the percentage of DDT in the sample:

0.0794 g / 5.0 * 100% = 1.59%

When copper is heated with an excess of sulfur, copper(l) sulfide is
formed. In a given experiment, 0.0970 moles of copper was heated
with excess sulfur to yield 5.59 g copper(1) sulfide. What is the
percent yield?

Answers

Answer:

72.4%

Explanation:

Step 1: Write the balanced equation

2 Cu + S ⇒ Cu₂S

Step 2: Calculate the theoretical yield, in moles, from 0.0970 moles of Cu

The molar ratio of Cu to Cu₂S is 2:1.

0.0970 mol Cu × 1 mol Cu₂S/2 mol Cu = 0.0485 mol Cu₂S

Step 3, Convert the theoretical yield to mass

The molar mass of Cu₂S is 159.16 g/mol.

0.0485 mol × 159.16 g/mol = 7.72 g

Step 4: Calculate the percent yield

We will use the following expression.

%yield = experimental yield/theoretical yield × 100%

%yield = 5.59 g/7.72 g × 100% = 72.4%

For some transformation having kinetics that obey the Avrami equation (Equation 11.17), the parameter n is known to have a value of 2.3. If, after 145 s, the reaction is 50% complete, how long (total time) will it take the transformation to go to 88% completion

Answers

Answer:

t ≈ 235.47 secs

Explanation:

Calculate how long it will take the transformation to go to 88% completion

Given that Avrami equation ( y )= 1 - exp( - kt^n )

n = 2.3

t = 145 secs

reaction = 50%  after t = 145 secs

Reaction = 88%  after t = ?

attached below is a detailed solution

how is acid different from base​

Answers

Hehsnsgx d she. Wayy buy is s
As

Use the drop-down menus to answer the questions.

Which organism begins this food chain and is a producer?
Which organism gains energy from eating the frog?
Which organism has the most available energy in this food chain?

Answers

Can you send a picture? That’s the only way I can see the problems

But, the producers should be on the bottom of the food chain, likely grass or something of the sort (plants)

If the frog has a line pointing to another organism, then that’s the organism that gains energy from eating it

Answer:

grass

snake

grass

Explanation:

just did it :)

Use the reaction below for the decomposition of sodium azide
to sodium metal and nitrogen gas.
2NaN3 (s) → 2Na(s) + 3N2(8)
What volume of nitrogen at STP is generated by the
decomposition of 130.0 g NaN3 ?

Answers

Answer:

34.05dm^3 of nitrogen gas

Explanation:

First things first, we need to find the number of moles of Sodium azide. We can do that by using the formula m=nM, mass = no. moles x Molar Mass

Rearrange to solve for no. moles and substituting in the known values and we have:

n = m/M

no. moles = 130.0g / (2x(22.99+3x14.01))

no. moles = 130.0/130.0 (4.s.f.)

no. moles = 1

Now we can use the ratio given in the equation to find the number of moles of Nitrogen that will be made:

1 x 3/2 = 1.5 moles of Nitrogen

Now we use the constant that 1 mole of any gas will always have a volume of 22.7dm^3 at STP.

1.5 x 22.7 = 34.05dm^3 of nitrogen gas.

Hope this helped!

An ideal gas in a sealed container has an initial volume of 2.80 L. At constant pressure, it is cooled to 18.00 °C, where its
final volume is 1.75 L. What was the initial temperature?
Ti =
'c

Answers

Answer:

[tex]T_1=-91.18\°C[/tex]

Explanation:

Hello there!

In this case, given the T-V variation, we understand it is possible to apply the Charles' law as shown below:

[tex]\frac{T_1}{V_1}= \frac{T_2}{V_2}[/tex]

Thus, since we are interested in the initial temperature, we can solve for T1, plug in the volumes and use T2 in kelvins:

[tex]T_1= \frac{T_2V_1}{V_2}\\\\T_1= \frac{(18.00+273.15)K(1.75L)}{(2.80L)}\\\\T_1=182K-273.15\\\\T_1=-91.18\°C[/tex]

Best regards!

The _______________________________________ of a plant cell are where photosynthesis takes place.

Answers

Answer:

chloroplast

Explanation:

Answer:

chloroplasts

Explanation:

A student did not read the directions to the experiment properly and mixed up where to place the NaOH solution and the vinegar. He put the vinegar in the titrator and the measured amount of NaOH in the beaker. He then added a drop of the phenolphthalein to the solution in the beaker. Does the student need to empty out all of the solutions and start over again or can he go ahead and run the titration? If he runs the titration using the solutions as given above, what should he expect to see happen for results?

Answers

Answer:

The answer is "Only at the end, a transformation of rose to color is made ".

Explanation:

 In this student puts its vinegar in the titrator, and NaOH throughout the beaker, which implies phenolphthalein has also been poured into water.

Phenolphthalein does have a pH range of 8.3-10 (approx). It's indeed pink in the basic medium therefore, the formulation becomes pink throughout the color by adding phenolphthalein to NaOH.

It is beginning of vinegar was its beginning of neutralization of NaOH from the titrator through full neutralization, a single piece of vinegar is added to a solution as well as the rose solution is lost throughout the beaker.

Investigation Question: How do organisms get their genes?
THIS ANSWER SHOULD BE 3 OR MORE SENTENCES.

Answers

Answer:

from the chromosome..l dont know

Genetic information is passed from generation to generation through inherited units of chemical information (in most cases, genes). Organisms produce other similar organisms through sexual reproduction, which allows the line of genetic material to be maintained and generations to be linked.
Other Questions
STOP SCROLLING HELP ME PLSSSSSS! Explain why some teens in the U.S. Are taking the federal government to court. Be sure to include important details about the case. Next, explain whether or not you agree with what the teens are doing, and why. Support your response with facts and details from the Article. E= McA. SquareB. TriangleC. XircleD. Subnautica Identify the part of speech for the italicized word in the sentence below.We realize that making dreams like these come true will require hard work.a.prepositionb.conjunctionc.interjection A shop buys pairs of trainers for 24 each.They sell them to make an 100% profit on each pair.What is the selling price of the trainers? Find the coordinates of the point for the reflection.(-8,5) across the x-axis Write the equation of this graph. Read the passage and answer the question A rectangle has a width of 3 units. The rectangle's length is 5 times its width.What is the area of the rectangle?square units Fill in the table using this function rule.Y = -5x + 1 1 Without, the night was cold and wet, but in the small parlour of Laburnum villa the blinds were drawn and the fire burned brightly. Father and son were at chess; the former, who possessed ideas about the game involving radical chances, putting his king into such sharp and unnecessary perils that it even provoked comment from the white-haired old lady knitting placidly by the fire. 2 "Hark at the wind," said Mr. White, who, having seen a fatal mistake after it was too late, was amiably desirous of preventing his son from seeing it. In this passage, what can the phrase "Hark at" be seen to mean in context? A) "Go to" B) "Follow" Eliminate C) "Listen to" D) "Be careful" Cindy follows her dog around a circle having a radius of 7.40 m.a) What distance did she travel? b) The trip took 54 seconds. What was her speed?c) What was the magnitude of her velocity? My g I need help with this one question on my Test review and spammers keep answering my questions pls someone help How much money would you have to invest at 7% compounded semiannually so that the total investment has a value of $2,090 after one year? How did Harriet Beecher Stowe help increase opposition to slavery?by donating money to abolitionist newspapersby organizing religious revivals against slaveryby writing "Civil Disobedience," an essay that describes ways to undermine slaveryby writing a powerful book, Uncle Tom's Cabin, showing the evils of slavery What are 6 facts about Will Smith? (They cant be about his date of birth, place of birth, his spouse, and children) Do you know the answer toPart A: 25% of 50 = Part B: 25% of 60 = Part C: 50% of 60 = Part D: 75% of 60 = Part E: 75% of 30 = Part F: 100% of 22.5 = Part G: 10% of 22.5 = Part H: 50% of 45.7 = PLEASE RESEARCH BEFORE ANSWERING THE FOLLOWING PLEASEBriefly describe some of the options or features that digital cameras may come with. Explain how each of the options or features you described makes it easier or harder to use the camera. Round to the nearest tenth.7.61577310586 A quadrilateral has one right angle. The second angle is 95 ^{\circ} . The third angle is 105 ^{\circ} .What is the measure of the fourth angle?