please help n let me know thank u

Answer:

both

Explanation:

id say that it could occur but also not as much. the moon would be smaller and further from the earth to where we would barely be able to see it. if the full moon is barely visible then im sure the total solar eclipse wouldn't be as noticeable as it is now. but thats just my opinion

Answer:

magnesium and copper(II) sulfate  no reaction

iron and magnesium sulfate                  reaction

copper and iron(III) nitrate                  reaction

magnesium and hydrochloric acid  reaction

Explanation:

Answer:

166.704

Explanation:

Answer:c

=

0.0253 M

Explanation:

Molarity is a measure of a solution's concentration in terms of how many moles of solute it contains per liter of solution.

So, in essence, if you have the number of moles of solute, like you do here, and the total volume of the solution expressed in liters, you can find how many moles of solute you get per liter, i.e. the molarity of the solution.

Keeping in mind the fact that the moles of solute are distributed evenly in any given volume of the solution, you can say that because  

7.98 L

of solution contain  

0.202

moles of solute, which in your case is potassium chloride,  

KCl

,  

1 L

of this solution will contain

1

L

⋅

0.202 moles KCl

7.98

L

=

0.0253 moles KCl

So, if your solution contains  

0.0253

moles of potassium chloride per liter, it follows that its molarity is equal to

c

=

0.0253 M

Here  

M

is equivalent to  

mol/L

, or molar.

The molarity of the solution that contains 0.505 mol KCl in 7.98 L of the solution is 0.0632 moles/L.

Molarity is a measure of a solution concentration in terms of how many moles of solute it contains per liter of solution.

Molarity = Moles of solute / Liters of solution

Its unit is mole/L

Given that a solution contains 0.505 mol KCl in 7.98 L of solution

Moles of solute (KCl) = 0.505 mol

Liters of solution = 7.98 L

Then, the molarity will be

M = [tex]\frac{0.505}{7.98}[/tex]

   = 0.0632 moles/L

Therefore, the molarity of the given solution is 0.0632 moles/L.

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#SPJ2

The covalent bond has been formed by the atom with the difference in the electronegativities and the presence of loan pair for an unsaturated bond.

The covalent bond has been formed between the atoms when there has been the sharing of electrons. The presence of loan pairs results in the formation of pi bonds, which are unsaturated covalent sharing formed above or below the covalent bonds.

An example of pair with a single bond has been:

The examples of pairs with double bonds:

The examples of pairs with triple bonds:

Not every atom can form these bonds as there has been the presence of loan pairs with the atom for the formation of the double and triple bond.

For more information about the covalent bond, refer to the link:

https://brainly.com/question/10777799

Answer:

yes, in certain cases

there are different types of bondings between atoms

and in some they lend electrons to make their atom stable this type of bonding is called ionic bonding

and in covalent bond the atoms share their electrons

Explanation:

Refer to the attachment

Extrashots:-

C4H8N2O3 is called asparagine .

Answer:

Incomplete combustion produces carbon monoxide along with some carbon dioxide.  Water is always produced during combustion.  If the fuel is sulfur containing, carbon disulfide will result as well.

Have a happy day! <3Miss Hawaii

Explanation:

Answer:

A i think. Good luck!!!!

Answer:

To determine the amount of atoms (or molecules) present given the moles of an element, you multiply the amount of moles by Avogadro's number,

6.022

⋅

10

23

4 mol

A

l

6.022

⋅

10

23

1

m

o

l

=

2.41

⋅

10

24

atoms/molecules of

A

l

Explanation:

Answer:

it's kcl

Explanation:

the kcl should be salt

Answer:

in f1 its shows all hybrid red

Explanation:

RR rr

R R

Answer:

The water cycle consists of three major processes: evaporation, condensation, and precipitation. Evaporation is the process of a liquid's surface changing to a gas. In the water cycle, liquid water (in the ocean, lakes, or rivers) evaporates and becomes water vapor.

Explanation:

Answer:

1 Density- degree of consistency measured by the quantity of mass per unit volume.

2 Cubic centimeters

3  Volume- Volume is the amount of space occupied by a substance, while mass is the amount of matter it contains. The amount of mass per unit of volume is a sample's density.

4 Liters

5 Mass- Scientific Definition of Mass Mass is the quantity of inertia (resistance to acceleration) possessed by an object or the proportion between force and acceleration referred to in Newton's Second Law of Motion (force equals mass times acceleration). In other words, the more mass an object has, the more force it takes to get it moving.

Explanation:

Answer:

What is density? The measure of how much matter is in a certain volume.

Which one of these are not a unit of volume? Answer: m² is not a unit of volume.

What is Volume? The length of an object.

Which of these is not a unit of mass? Metric ton (t)

What is mass?A measure of the amount of matter in an object or substance.

Answer:

I don't know sorry am read in 5 class

Answer:

huhhhhhhhhj

hshshhshshshshshsh

Answer:

difference between atom and ion

Explanation:

What is an Atom?

The smallest unit of matter. It is indivisible and consists of neutrons, electrons and protons. Atoms can take part in chemical reactions. Combination of atoms together forms molecule. Always the number of protons and electrons are equal. Independent life may or may not be feasible within a solution. Nucleus of the atom is formed by protons and neutrons. Surrounding the nucleus are the electrons.

What is an Ion?

Atoms where the electrons and protons are not equal are called ions. Ions are charged particles. They can be either positively charged ions or negatively charged ions. If an atom is charged electrically it is considered an ion. If an atom contains maximum number of electrons than protons, then it is called anion. If an atom contains maximum number of protons than electrons, then it is called cation. Independent existence in a solution. When an atom gains or loses electrons, ion is formed.

To make you understand how atom and ion are different from each other, here are the some major differences between atom and ion:

Answer:

ù

Explanation:

What are the 26 states of matter?

Bose–Einstein condensate.

Fermionic condensate.

Degenerate matter.

Quantum Hall.

Rydberg matter.

Rydberg polaron.

Strange matter.

Superfluid

In this case, the amount of calories is 105 calories.

In conclusion, the amount of calories, in this case, is 105 calories.

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Answer:

0.123 mol

Explanation:

1 mol Na/22.99g na=0.123 mol

Answer:

[tex]\boxed {\boxed {\sf 0.261 \ mol \ B}}[/tex]

Explanation:

We are asked to find the number of moles in a sample of 2.82 grams of boron.

We convert grams to moles using the molar mass or the mass of 1 mole of a substance. These values are found on the Periodic Table. They are equivalent to the atomic masses, but the units are grams per mole instead of atomic mass units.

Look up the molar mass of boron (B).

Convert using dimensional analysis. Set up a conversion factor using the molar mass.

[tex]\frac {10.81 \ g \ B}{ 1 \ mol \ B}[/tex]

We are converting 2.82 grams of boron to moles, so we multiply by this value.

[tex]2.82 \ g \ B *\frac {10.81 \ g \ B}{ 1 \ mol \ B}[/tex]

Flip the ratio so the units of grams of boron cancel.

[tex]2.82 \ g \ B *\frac { 1 \ mol \ B}{10.81 \ g \ B}[/tex]

[tex]2.82*\frac { 1 \ mol \ B}{10.81}[/tex]

[tex]\frac {2.82}{10.81} \ mol \ B[/tex]

[tex]0.2608695652 \ mol \ B[/tex]

The original value of grams has 3 significant figures, so our answer must have the same. For the number we found, this is the thousandth place. The 8 in the ten-thousandth place tells us to round the 0 up to a 1.

[tex]0.261 \ mol \ B[/tex]

There are approximately 0.261 moles of boron (B)in 2.82 grams of boron.

Answer:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.

Answer:The answer is 8-14

Explanation:It can range from 9-10 or

or above to 14 depending on the amount of leached wood ash(lye) a.k.a potassium carbonate which is an alkalline compound

Answer:

8-14

Explanation:

Answer: I'll leave the answer rounded to three sig figs.

mark me brainlist

So, you can say that in a hydrogen atom, an electron located on  

n

i

=

2

that absorbs a photon of energy  

4.85

⋅

10

−

19

J

can make the jump to  

n

f

=

6

.

Explanation:

The question wants you to determine the energy that the incoming photon must have in order to allow the electron that absorbs it to jump from  

n

i

=

2

to  

n

f

=

6

.

A good starting point here will be to calculate the energy of the photon emitted when the electron falls from  

n

i

=

6

to  

n

f

=

2

by using the Rydberg equation.

The heat of formation of CuBr₂ (s) = -141.8 kJ/mol

The heat of reaction ΔH = ∑ΔHproducts - ∑ΔHreactants

ΔH = ΔHCuBr₂ (s) + ΔHCl₂ (g) - [ΔHCuCl₂ (s) + ΔHBr₂(l)]

where ΔHCuBr₂ (s) = heat of formation of CuBr₂ (s),  ΔHCl₂ (g) = heat of formation of Cl₂ (g) = 0 kJ/mol, ΔHCuCl₂ (s) = heat of formation of CuCl₂ (s) = -205.9 kJ/mol, ΔHBr₂(l) = heat of formation of Br₂(l) = 0 kJ/mol and ΔH = heat of reaction = 64.1 kJ/mol

Substituting the values of the variables into the equation, we have

ΔH = ΔHCuBr₂ (s) + ΔHCl₂ (g) - [ΔHCuCl₂ (s) + ΔHBr₂(l)]

64.1 kJ/mol = ΔHCuBr₂ (s) + 0 kJ/mol - [-205.9 kJ/mol + 0 kJ/mol]

64.1 kJ/mol = ΔHCuBr₂ (s) + 0 kJ/mol + 205.9 kJ/mol - 0 kJ/mol

64.1 kJ/mol = ΔHCuBr₂ (s) + 205.9 kJ/mol

ΔHCuBr₂ (s) = 64.1 kJ/mol - 205.9 kJ/mol

ΔHCuBr₂ (s) = -141.8 kJ/mol

So, the heat of formation of CuBr₂ (s) = -141.8 kJ/mol

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Answer:

B. Their atomic numbers increase by 1 from left to right

Answer:

falso

Explanation:

Taking into account the definition of dilution,  the new concentration of the solution is 0.2567 M.

First of all, you have to know that   dilution is the reduction in concentration of a chemical in a solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volumeof the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

In this case, you know:

Replacing in the definition of dilution:

0.385 M× 0.600 L= Cf× 0.900 L

Solving:

Cf= (0.385 M× 0.600 L)÷ 0.900 L

Cf= 0.2567 M

In summary, the new concentration of the solution is 0.2567 M.

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