how many of the following elements have 2 unpaired electrons in the ground state?

Answers

Answer 1

Answer:

I'll h he d Glendale https hehe

Explanation:

grendel v BB hehe iron v


Related Questions

Which of the following moves away from the central nervous system?
Afferent Neuron
Efferent Neuron
Proxima Neuron
Distal Neuron

Answers

Answer:

distal

Explanation:

you c a n remember that by the word distance

Distal Neuron would be correct

When a glucose molecule loses a hydrogen atom in an oxidation-reduction reaction, the glucose molecule is ________

Answers

Answer:

Important

Explanation:

calculate the number of moles of ethanol acid in 30 cm³of 1 mol dm-³ solution ​

Answers

Answer:

May I assume "ethanol acid is just ethanol (it has one slightly acidic H atom).  If so, the molar mass is 46.02 g/mole.

Explanation:

We have 30 cm^3 [30 ml] of 1.0 M (1 mole/liter)  [1 dm³ = 1 liter].

That is 1 mole/liter.  30 ml would contain (0.030 liter)*(1 mole/1 liter) = 0.03 moles.

According to Dalton, atoms of different elements will be____________.

Answers

Answer:

The atoms of different elements vary in size and mass.

Explanation:

I WILL MARK BRAINLY-EST Do you think the way we perceive food in our culture supports the guidelines in MyPlate? Explain your

answer

Answers

Yes, some cultures eat healthier due to restrictions on some foods they won’t eat due to their culture. So eating healthier because of that endorses the guidelines on my plate since they push us to eat healthier. One prime example is Japanese culture they believe in a balanced meal and balanced presentation.

What is the best cream to get rid of self harm scars?

Answers

Mederma Advanced Scar Gel is the most effectively scientific proven method to do so.

not cream, but it I know that coconut oil and honey heals scars in general! I fell once and it was a terrible scar and i places coconut oil at night and the day a little honey and within a few days the scar was unnoticeable. it's sure it will help the same. Remember you are loved and you have so much worth. I am so proud of how far you have come I'm life. <33

Which process releases heat?
O A. Sanding wood
O B. Baking bread
O C. Burning gasoline
O D. Frying french fries​

Answers

Answer:

C

Explanation:

burning gasoline i think pls can i have brainliest if right!

Answer:French fries

Explanation:

what is the ground-state electron configuration of a neutral atom of iron?

Answers

Iron is a transition metal and a transition metal has more than one oxidation state or valency for ex.
Theres Fe2+ or iron(II)
And there’s Fe3+ or iron(III)

The element X has three naturally occurring isotopes. The masses (amu) and % abundance of the isotopes are given in the table below. The average atomic mass is ______amu. Give your answer two decimal places.

Answers

Answer:

In order to solve for this you would need to plug it into an equation. You would add them all up to eachother after multiplying them by their percentages.

So it would be (0.75*48.90)+(0.18*49.10)+(0.07*50.20). Plug it all into a calculator and you get 49.027amu. Then you would round to significant figures so 49.03amu should be your answer.

describe the motion and arrangement of particles in a solid, a liquid, and a gas.

Answers

Answer:

gas vibrate and move freely at high speeds. liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.

Hopefully this helped!

do not delete i just need help

Answers

Answer:

A. prokaryotic cell

Explanation:

We can easily identify the diagram as prokaryotic cell by the capsule shown. These organisms mostly have capsules.

10m/s for 30 seconds

Answers

Answer:

300 meters for 30 seconds

Explanation:

10*30= 300 therefore giving you your answer.

Vote brainliest!

what is the mass percent of hydrogen in water

Answers

Answer:

11.11%

Explanation:

The percentage of an element in a compound is 100 times the fraction, so for water the mass percent hydrogen is 11.11%

Hope this helps :)

1. A box of hardware contains 100 pieces. Assuming there are 25 pieces in each vial, calculate the
mass of a box of each kind of hardware. Express these values in units of g/box

Answers

Answer:

fofo you for your patience and

The question is incomplete.

Following things are required to solve the question:-

Mass of the vileMass of the pieces

Without the information we can not solve the question. Therefore, please provide with the incomplete information.

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PLEASE EXPLAIN what is glucose

Answers

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

Glucose is the most common form of sugar in the blood and the body's primary source of energy. Glucose is derived from the meals we eat or produced by the body from other chemicals. The circulation transports glucose to the cells. Several hormones, including insulin, regulate blood glucose levels.

a simple sugar that is a component of many carbohydrates and is a vital source of energy in living things.

Blood sugar, often known as glucose, is the most common sugar present in the body. It is your body's major source of energy and comes from the food you eat. Glucose is carried by your blood to all of your body's cells, where it is used for energy.

How many cobalt atoms are in 2 moles of cobalt?

Answers

That means that one mole of cobalt weighs 58.9332 grams (58.9332 g/mol). Based on that information, to convert 2 moles of cobalt to grams, we multiply 2 moles of cobalt by 58.9332.

12.04428152 x [tex]10^{23}[/tex] cobalt atoms are in 2 moles of cobalt.

What are moles?

A mole is defined as 6.02214076 ×[tex]10^{23}[/tex]

of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

One mole of cobalt is equal to 6.02214076 ×[tex]10^{23}[/tex] atoms.

2 moles of cobalt is equal to 6.02214076 × [tex]10^{23}[/tex]atoms x 2

12.04428152 x [tex]10^{23}[/tex]

Hence, 12.04428152 x [tex]10^{23}[/tex]cobalt atoms are in 2 moles of cobalt.

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a substance that cannot be separated into simpler substances

Answers

Answer:

element

Explanation:

hope this helps

Explanation:

Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means.

If a 22.4 L volume of a sample of gas has a density of 0.900 grams/L at 1.00 atm and 0.00°C. Given
the following gases, which could it be?
A. Ne
B. CO
C. CO2
D. Kr

Answers

Answer:

Formula Weight of gas sample = 20.1 g/mole => Neon (Ne)

Explanation:

Use Ideal Gas Law formula to determine formula weight and compare to formula weights of answer choices.

PV = nRT = (mass/fwt)RT => fwt = (mass/Volume)RT = Density x R x T

Density = 0.900 grams/L

R = 0.08206 L·atm/mole·K

T = 0.00°C = 273Kfwt = (0.900g/L)(0.08206L·atm/mole·K )(273K)

= 20.1 g/mol => Neon (Ne)

Write the electron configuration for the metal in group 5A and the alkali metal in period 2

Will give brainliest if answered fast :)

Answers

Answer:

metal in group 5A is bismuth

electronic configuration : 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 5s^2 5p^6 4f^14 5d^10 6s^2 6p3

alkali metal in period 2 is lithium

1s^2 2s^ 1

Explanation:

how many moles are in 2.5g of n2

Answers

Answer:

0.089

Explanation:

n= m/M = 2.5/14 = 5/28 mol

ok done. thank to me :>

An unknown substance dissolves in water but separates and floats in oil.

Answers

Answer:

Any polar substance

Explanation:

We know that non polar substances wont dissolve in water because they do not react properly with water molecules, any polar substance would dissolve in water and float in oil.

An unknown substance dissolves in water but separates and floats in oil is any polar substance.

What are polar substances?

Polar substance are defined as those whose bonding with atoms like nitrogen, oxygen, or sulfur has resulted in discrete positive and negative charge areas.

It can also be defined as an electrical pole is typically created when a molecule has more positive charges on one end than negative charges on the other, forming an electrical pole.

Non polar substances are defined as a molecule that lacks charges at the ends because its electrons are evenly distributed and those that cancel one another out symmetrically.

It is can also be defined as in covalent compounds, there is no change in electronegativity.

Thus, an unknown substance dissolves in water but separates and floats in oil is any polar substance.

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The relative atomic mass of chlorine is 35.5.
When calculating relative atomic mass, which particle is the mass of a chlorine atom compared
to?

Answers

Given what we know, we can confirm that relative atomic mass is calculated by comparing the particles to the atomic mass of a carbon-12 atom.

Why compare to carbon-12?Carbon is a very common element. It was been studied greatly, telling us a great deal about the atom. It contains 6 protons and 6 neutrons.This makes it very stable and the standard for comparison.

Therefore, given its abundant nature and the fact that it has been extensively studied, we can confirm that a carbon 12 atom has exactly 6 protons and 6 neutrons, making it very stable and the standard to which other atoms are compared.

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which example is an electron carrier in its reduced form?

Answers

Bad , fad is the answer check

A student wants to perform an experiment to study the relationship between the temperature and pressure of an enclosed gas. In one or two sentences, describe two assumptions that must be made in performing this experiment.(2 points)

Answers

An assumption that must be made when studying the relationship between pressure and temperature is that the gases do not interact with each other.

An experiment seeks to understand the effect of one variable on the other. The relationship between the pressure and temperature of a gas is commonly studied.

In an experiment to determine the relationship between temperature and pressure of a gas, the following assumptions must be made;

The gases molecules only occupy only a negligible volume compared to the total volume of the gas.The gas molecules do not interact with each other.

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A spoon. A beaker partially filled with liquid. A stirring rod. A graduated cylinder. Distilled water in a spray bottle. Which of the following tools could have become cross-contaminated during the experiment if you had not cleaned them carefully between successive tests? Spoon Beaker Stirring Rod Graduated Cylinder Distilled water in spray bottle.

Answers

Answer:

A,B,C,D

Explanation:

Answer:

A,B,C,D

Explanation:

Proof

Which of the following forms of alcohol can be consumed? A. Propanol B. Methanol C. Butanol D. Ethanol Please select the best answer from the choices provided. A B C D.

Answers

Answer:

D. Ethanol

Explanation:

because Propanol, Methanol and Butanol are not safe to consume. soo the answer is Ethanol

Ethanol forms of alcohol can be consumed.

What is ethanol?Ethanol is used in the manufacture of medication, plastics, lacquers, polishes, plasticizers, and cosmetics. Ethanol is used in medicinal drugs as a topical antiinfective, and as an antidote for ethylene glycol or methanol overdose.Industrial merchandise containing ethanol include beverages, perfumes, aftershaves and colognes, medicinal liquids, mouthwashes, liniments, and a few rubbing alcohols.within the worst cases, there will also be breathing issues, low blood strain, incontinence heart issues, blood issues, liver damage, and demise. Ethanol may also dry out and irritate the pores and skin; there may be aches, redness, and swelling. Eye exposure to ethanol can also cause tearing, burning, and stinging.

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What are chemicals that speed up the rate of chemical change?

Answers

Catalysts speed up chemical reactions / changes.

Hope this helps!

Elements in the same period in the same periodic table have the same ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Answers

Elements in the same period have the same number of electron shells; moving across a period (so progressing from group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.

PLEASE MARK ME BRAINLIEST ANSWERER

diagram of a separate funnel​

Answers

Answer:

Separation techniques

Separating Funnel - Separation techniques

Explanation:

if you look this up this should help i think

Beryllium (Be) has four electrons. Fluorine (F) has nine electrons. Which chemical formula shows the correct subscripts for the product of the reaction when beryllium and fluorine combine

Answers

Answer:

BeF2

Explanation:

The correct chemical formula for the product of the reaction when beryllium and fluorine combine is BF₂.

The valence electron of an atom determines how an atom goes into bonding.

Beryllium(Be) has 4 electron and has 2 valence electron. To fulfil the octet rule, it can easily give out this 2 electron during bonding.

Fluorine(F) has 9 electrons and 7 valency electrons. To fulfil the octet rule, it readily accepts a single electron.

The correct chemical formula for the product of the reaction when beryllium and fluorine combine is BF₂.

This means 1 atom of beryllium combines with 2 atoms of fluorine to form beryllium fluoride. The beryllium give its 2 valency electrons to the 2 atoms of fluorine. The 2 atoms of fluorine will now have a valency electron of 8 each. The octet rule has been fulfilled at this point.

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