how many atoms are in 26g of cobalt

Answers

Answer 1
0.4411 I’m not sure but this is what I found

Related Questions

Worth 15 points
I need help plssss first answer is brainliest

Answers

Answer:

sodiom i think

Explanation:

Compared to atoms of metals, atoms of nonmetals generally
A)have higher electronegativities
B)have lower first ionization energies
C)conduct electricity more readily
D)lose electrons more readily

Answers

The answer for the question is C

Compared to atoms of metals, atoms of nonmetals generally conduct electricity more readily. Therefore, option C is correct.

What are metal atoms ?

The term metal atom is defined as an atom of an element that exhibits typical metallic properties, being typically shiny, with high electrical and thermal conductivity.

Metallic bonds form when the charge is spread over a greater distance than the size of individual atoms in solids. Most left elements in the periodic table form metallic bonds, such as zinc and copper.

Metals are defined as elements to the left of the line. Elements just to the right of the line have both metal and nonmetal properties and are referred to as metalloids. Nonmetals are elements at the far right of the periodic table.

Thus, option C is correct.

To learn more about the metal atom, follow the link;

https://brainly.com/question/1675378

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A small bubble rises from the bottom of a lake, where the temperature and pressure are 8°C and 6.4 atm, to the water's surface, where the temperature is 25°C and pressure is 1.0 atm. Calculate the final volume (in ml) of the bubble if its initial volume was 2.1 ml.
a. 0.070 ml
b. 21 ml
c. 14 ml
d. 42 ml​

Answers

Answer:

b

Explanation:

Number of unpaired electrons in the electronic configuration 1s2 2s2 2p4 is​

Answers

Answer:

2 electrons

Explanation:

there’s are 2 unpaired electrons

Na+CL2=2NACL is the balanced reaction for the formation of table salt. Given 20 grams of Na and 10 grams of Cl2, which reactant is in excess? How much NaCL should be produced from these amounts of the two reactants?

Answers

Excess reactant : Na

NaCl produced : = 16.497 g

Further explanation

Given

Reaction(balanced)

2Na + Cl₂⇒ 2NaCl

20 g Na

10 g Cl₂

Required

Excess reactant

NaCl produced

Solution

mol Na(Ar = 23 g/mol) :

= 20 : 23 = 0.87

mol Cl₂(MW=71 g/mol):

= 10 : 71 g/mol = 0.141

mol : coefficient :

Na = 0.87 : 2 = 0.435

Cl₂ = 0.141 : 1 = 0.141

Limiting reactant : Cl₂(smaller ratio)

Excess reactant : Na

Mol NaCl based on mol Cl₂, so mol NaCl :

= 2/1 x mol Cl₂

= 2/1 x 0.141

= 0.282

Mass NaCl :

= 0.282 x 58.5 g/mol

= 16.497 g

One problem with fuel-cell cars is that
gas is not readily available in
pure form.
Answer here

Answers

Answer: Hydrogen.

Explanation: One problem with fuel-cell cars is that hydrogen gas is not readily available in pure form. Fuel cell vehicles use hydrogen gas to power an electric motor. Unlike conventional vehicles which run on gasoline or diesel, fuel cell cars and trucks combine hydrogen and oxygen to produce electricity, which runs a motor. Hope this helps ^-^.

Answer:

Hydrogen.

Explanation:

Some students believe that teachers are full of hot air. If I inhale 2.1 liters of gas at a temperature of 200 C and it heats to a temperature of 370 C in my lungs, what is the new volume of the gas?

Answers

Answer:

2.86L

Explanation:

Given parameters:

V1  = 2.1L

T1  = 200°C  = 200 + 273  = 473K

T 2  = 370°C  = 370 + 273  = 643K

Unknown:

V2  = ?

Solution:

Since pressure is constant, we apply the Charles's law;

           [tex]\frac{V1}{T1}[/tex]   =  [tex]\frac{V2}{T2}[/tex]  

V is volume

T is the temperature

1 is the initial state

2 is the new state

                [tex]\frac{2.1}{473}[/tex]    = [tex]\frac{V2}{643}[/tex]  

                 V2  = 2.86L

PLEASE HURRY !!!!!!!!!!!
Which of the following describes how the San Andreas Fault formed on Earth at a transformed boundary?

Plates moved in closer

Plates moved away from each other

Plates slid past each other

Plates moved with each other in the same direction

Answers

Answer: At convergent boundaries, plates move toward each other. They can push together and cause mountain ranges to form. At other times, one plate gets pushed down beneath the other plate. ... At divergent boundaries, plates move apart from each other.

Explanation:

I whould personally go with plates moved in closer

How many atoms are present in 2.30 moles of Carbon?

3.82 x 10-24 atoms -a
3.82 x 1023 atoms-b
1.38 x 1024 atoms-c
6.02 x 1023 atoms-d

Answers

A level of numbers I don’t understand

what does mechanical digestion mean ?

Answers

Answer:

Explanation:

Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.

Lithium Nitride is a ionic bonded compound because?

Answers

m nitride, an ionic compound containing the Li + and N 3 − ions, is prepared by the reaction of lithium metal and nitrogen gas.

What procedure did you use to complete the lab?

Outline the steps of the procedure in full sentences.

Answers

Hello, 3Coli Here!

Your Answer is Here:

I made a hypothesis, observed my experiments, used a procedure, had and prepared materials that are needed, evidence that support my thesis, and made a conclusion.  

Hopefully, this helps!

Ask your question below!

25 points !!!!!!
a 10 ml sample of borax- borate equilibrium solution reacts completely with 23.33 ml of a 0.1006 M HCl solution. calculate the concentration of borate and then the Ksp for borax​

Answers

Answer:

See answer below

Explanation:

To do this, you need to write down the chemical reaction giving place here.

As this is to explain the thermodynamics of the borax-borate reaction, the general reaction is as follow:

Na₂B₄O₅(OH)₄.8H₂O(s) <---------> 2Na⁺(aq) + B₄O₅(OH)₄²⁻(aq) + 8H₂O(l)

Where:

Na₂B₄O₅(OH)₄.8H₂O(s) = Borax

B₄O₅(OH)₄²⁻(aq) = Borate ion

Now, in order to calculate the concentration of borate, this compound undergoes a titration with HCl. The reaction that takes place here is:

B₄O₅(OH)₄²⁻(aq) + 2HCl + 3H₂O <---------> 4H₃BO₃(aq) + 2Cl⁻(aq)

According to this reaction, it takes 2 moles of HCl to completely react with the borate ion, therefore, the expression to calculate the concentration will be:

2 nHCl = nB₄O₅(OH)₄²⁻

2M₁V₁ = M₂V₂

Replacing the data of concentration and volume of both compounds we have:

2 * 0.1006 * 23.33 = 10M₂

M₂ = 2 * 0.1006 * 23.33 / 10

M₂ = 0.4693 M

This is the concentration of the borate. Now, to calculate the Ksp we need to write the equilibrium reaction taking place with the borax:

Na₂B₄O₅(OH)₄.8H₂O(s) <---------> 2Na⁺(aq) + B₄O₅(OH)₄²⁻(aq) + 8H₂O(l)

Ksp = [B₄O₅(OH)₄²⁻] [Na⁺]²

As we already have the concentration of borax, we can also know the concentration of sodium. If we call concentration as "s" (Stands for solubility), and rewrite the expression of Ksp:

Ksp = s * (2s)²

Finally, replacing the value of the concentration we have:

Ksp = (0.4693) (2*0.4693)²

Ksp = 0.4693 * 0.881

Ksp = 0.4134

Hope this helps

what is the equation for calcium reacts with aluminum carbonate?

Answers

Answer:

3 Ca + Al2(CO3)3 -> 3 CaCO3 + 2 Al

Explanation:

Ca + Al2(CO3)3 -> CaCO3 + Al

Balanced equation

3 Ca (s) + Al2(CO3)3 (aq) -> 3 CaCO3 (aq) + 2 Al (s)

shorthand representation of compounds

Answers

The skeletal formula, also called line-angle formula or shorthand formula, of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some

Answer:

The skeletal formula, also called line-angle formula or shorthand formula, of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some details of its molecular geometry.

Explanation:

hope this helps

"No matter what phase water

is in, the water molecules

stay the same; they just move

differently."


1: explain why this evidence matters

Answers

Answer:

Yes, water molecules remain the same despite the phase

Explanation:

When water is in the form of ice, it molecules remain the same only the distance between the molecule. This distance is higher than that of the inter molecular distance between liquid water molecules. Due to this reason ice is lighter than water.  

Now in gaseous phase, the intermolecular distance increases thereby making it lighter than solid ice and liquid water.

 

Can someone hel me On these questions please

Answers

Answer:

B, A, A

Explanation:

What two processes occur at the mid ocean ridge?

Answers

Answer:

ridge push and slab pull

Explanation:

there are two processes through to be responsible for the spreading seen at mid ocean ridges and there is some uncertainty as to which is dominant. ridge push occurs when the weight of the ridge pushes at the rest of tectonic plate away from the ridge often towards a subduction zone. hope this helped

Which ion forms the strongest ionic bond with a given anion? ​

Answers

Answer:

Explanation:

A cation with a 2+ charge will make a stronger ionic bond than a cation with a 1+ charge. A larger ion makes a weaker ionic bond because of the greater distance between its electrons and the nucleus of the oppositely charged ion.

Which of the following molecules is most likely an enzyme?
water
glucose
protease
monosaccharide

Answers

Answer:

protease is an enzyme

Explanation:

It hydrolyse peptide bonds of proteins and also called proteolytic enzymes.

protease! - it as an enzyme :)

I KNOW THE ANS JUST NEED AN EXPLANATION...PLEASE I WILL Mark you the brainiest

Answers

I’m pretty sure it would be D.

0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The labels for two processes are missing.
Weathering of
ROCKS at surface
IGNEOUS
ROCK
Uplin
SEDIMENTARY ROCK
METAMORIHIC ROCK
Melting
Which of these processes could be happening at the stage labeled 2?
o folding and mountain building
chemical changes due to heat and pressure
compaction and cementation of weathered sediments
subduction of an oceanic plate beneath a continental plate

Answers

Answer:

Chemical changes due to heat and pressure

Explanation:

Just took the test, hope this helps! :)

Answer:

Chemical changes due to heat and pressure

Explanation:

I took this test and got a 100%! :D

What is the % of water in (MgSO4 . 2H2O)?

Answers

Answer: A hydrate is found to have the following percent composition: 48.8% MgSO4 and 51.2% water.

Explanation:

i dont know

What particles are contained in the nucleus of an atom?
O electrons & protons
O neutrons & electrons
O neutrons & protons
O pixels & electrons

Answers

Electrons and protons
Answer:A

If an ion has 22 protons and 18 electrons, then what is its charge?

Answers

It has a positive charge, 22-18= +4
It would have a positive charge because there are more protons then electrons which would cancel out the electrons and make it positive. Hope this helps!

what is the chemical formula of Fire​

Answers

Answer:  

The heat of the flame will keep remaining fuel at ignition temperature. The flame ignites gases being emitted, and the fire spreads. As long as there is enough fuel and oxygen, the fire keeps burning. Fuel + oxygen (from the air) = combustion products (mainly CO2 + H2O) + heat

Explanation:

Answer:

Chemical formula of fire is burning or combustion of air (particularly oxygen).

Explanation:

Please Brainliest

Giving away 20 points and brainlest, please help

What type of transport does not require energy to move molecules across the plasma membrane?

A. bilayer

B. active

C. passive

D. concentration gradient

Answers

Answer:

A

Explanation:

Answer:

I don’t think that A is the correct answer, I believe that C may be the correct answer

Explanation:

this is due today so please help me

Answers

B north to south. Hope this helps

Answer:

b north to south

Explanation:

What gases were in the second atmosphere? *

Answers

Answer:

Second Earth's Atmosphere

The second atmosphere, which was the first to remain with the earth, was created by volcanic outgassing and comet ice. There was a lot of water vapor, carbon dioxide, phosphorus, and methane in this atmosphere, but absolutely no oxygen.

Explanation:

H2O CO2 SO2 H2S HCI N2 NO2

How many atoms are contained in 5.77 grams of aluminum? Express your answer in exponential notation (Ex: 6.02*1023 would be entered as 6.02e23). Round the digits to the hundredths place. No units required.

Answers

Answer:

5.09

Explanation:

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