state modern periodic law ?arrange the element of halogen family in the increasing order of their number of Shell ?what type of Bond formation exists between the element of group 1 and 17 and why?​

Answer:

the products which is formed in the given reaction is MgO ( magnesium oxide )

Explanation:

when magnesium metal reacts with oxygen present in air it burns with a white dazzling flame

to form white powder of magnesium oxide (MgO)

here's the balanced chemical reaction for it

2Mg+O2->2MgO

Answer:

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Answer:

(6.3x10^23)/(6.02x10^23) = 1.047 mol Cl

The number of moles of the chlorine atoms in the 6.022 × 10²³ molecules of chlorine is equal to 2.10 mol.

Avogadro’s number can be used to express the number of entities in one mole of any substance and these units can be atoms, molecules, ions, electrons, or protons, depending upon the kind of chemical reaction or reactant and product.

The Avogadro’s constant has a numerical value approximately equal to 6.022× 10²³ mol⁻¹.

Given, the number of molecules of chlorine = 6.3× 10²³

As the one chlorine mole has chlorine atoms = 2

The number of moles of chlorine molecules in 6.3× 10²³ will be :

= 6.3× 10²³/ 6.022× 10²³ = 1.05 moles

One mole of chlorine molecules has Cl atoms = 2 moles

1.05 moles of chlorine molecules have Cl atoms = 2 × 1.05 = 2.10 mol

Therefore, the number of moles of Chlorine atoms is equal to 2.10.

Learn more about Avogadro's number, here:

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Answer:

htt ps://w ww.you  tube. com/watch?v =oyy377 Yoj4I

Explanation:

The empirical formula = the molecular formula = C₁₀H₂₀O

Given

m =  0.15 g menthol

V = 0.0337 L

T = 150 +273 = 423 K

P = 100.2 kPa =0.99 atm

Required

molar mass

The molecular formula

Solution

Ideal gas law :

PV=nRT

n=PV/RT

n=0.99 x 0.0337/0.082 x 423

n=9.6 x 10⁻⁴

n =  mass/Molar mass

Molar mass = mass/n

Molar mass = 0.15/9.6 x 10⁻⁴

Molar mass = 156.25 g/mol

The empirical formula of Menthol : C₁₀H₂₀O

(The empirical formula)n= molecular formula

(C₁₀H₂₀O)n=156.25

(12.011.10+1,007.20+15,999)n=156.25

(156.25)n=156.25

n=1

Answer:

Hi! I think it's storms.

Answer:

I think evaporation

Explanation:

because clouds and precipitation are listed i am not entirely sure if I were u i would double check

Answer:

The order the words go for the blanks

Explanation:

Interia

Rest

Constant

Unbalanced

Balanced

Distance

Answer:

A

Explanation:

beacause in both the electronegativity values and number of first she'll electrons

In group 14 from top to bottom there are changes in both the electronegativity values and atomic radii changes.

Groups in the periodic table are the columns in which elements are present which all are having same number of valence electrons.

On moving top to bottom in the 14th group of the periodic table:

Hence electronegativity values and atomic radii changes.

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Answer:

Transferring energy into or out of a substance changes its temperature, which changes the molecules' freedom of movement. Claim 2: Transferring energy into or out of a substance changes the molecules' kinetic energy, which changes their freedom of movement.

Answer:

stratosphere

Explanation:

The stratosphere is crucial to life on Earth because it contains small amounts of ozone, a form of oxygen that prevents harmful UV rays from reaching Earth.

Answer:

Cellular division has three main functions: (1) the reproduction of an entire unicellular organism, (2) the growth and repair of tissues in multicellular animals, and (3) the formation of gametes (eggs and sperm) for sexual reproduction in multicellular animals.

Answer:

There are four key reasons why a cell may be required to divide mitotically:

Tissue repair / replacement.

Organismal growth.

Asexual reproduction.

Development (of embryos)

Answer:

Three types of chemical bonds are important in human physiology, because they hold together substances that are used by the body for critical aspects of homeostasis, signaling, and energy production, to name just a few important processes. These are ionic bonds, covalent bonds, and hydrogen bonds.

Explanation:

Explanation:

A because A galvanic cell consists of two half-cells, such that the electrode of one half-cell is composed of metal A, and the electrode of the other half-cell is composed of metal B; the redox reactions for the two separate half-cells are thus: An+ + ne− ⇌ A.

Answer:

A

Explanation:

Answer:

a. They are staying at the same speed

Explanation:

IF CORRECT PLSPLSPLS GIVE BRAINLIEST WOULD APPRECIATE :)

Answer:

a. They are staying at the same speed

Answer:

Elements and compounds are two types of pure substances.

Explanation:

Answer:

D I'm pretty sure.

Explanation:

I'm taking the quiz right now and D makes the most sense.

Answer:

d

Explanation:

Answer:

7

Explanation:

that is the anwer of the question

Answer:

The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.

Explanation:

____________________________________________________________

____________________________________________________________

The cells inside of your and my body alike produce these waste materials. We need to get rid of them because if we don't, we could get sick! Or possibly cause something worse...

____________________________________________________________

____________________________________________________________

Well, the answer kind-of explains all I would want to say! Feel free to copy and paste this on your assignment, but do NOT use the sample answer like the other person who answered this did. (The sample answer you should NOT use: "The cells of the body produce waste materials. The body needs to get rid of these waste materials because they can make us sick. Getting rid of this waste keeps us healthy.") It could make your teachers or parents suspicious of your work! Anyways, have a good day! ❥

Answer:

pretty sure its C

Explanation:

Democritus was all about the consept f tiny indestructible partivls called atoms so C is the only one that doesn' t fit

Answer:

I'm pretty sure it's A

The volume of the suspension required : 10 ml

Given

0.500 g of ampicillin

The liquid suspension concentration = 250 mg/5 mL

Required

The volume of the suspension required

Solution

The concentration of a substance can be expressed in various units such as molarity, ppm, g / L etc.

Each unit change, we must pay attention to the conversion factor

Conversion g to mg

0.5 g = 500 mg

The volume of the suspension needed :

=mass x concentration

[tex]\tt \dfrac{500~mg}{250~mg/5~ml}=500~mg\times \dfrac{5~ml}{250~mg}\\\\=10~ml[/tex]

Answer:

d

Explanation:

Answer:

a. hydrogen

Explanation:

Explanation:

Carbon-12 and carbon-14 are two isotopes of the element carbon. The difference between carbon-12 and carbon-14 is the number of neutrons in each of their atoms. Atoms of both isotopes of carbon contain 6 protons. Atoms of carbon-12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons.

Anser:

Explanation:

hope this helps

Answer :

(a) Reactant Mg is oxidized and reactant Fe is reduced.

(b) Reactant C is oxidized and reactant Cu is reduced.

Explanation :

As we know that a reactant is either reduced or oxidized in a chemical reaction.

Part (a):

The given word equation of chemical reaction is:

Magnesium metal + Aqueous iron (III) sulphate → Iron metal + Aqueous magnesium sulphate

The balanced chemical equation of this word equation will be:

[tex]3Mg(s)+Fe_2(SO_4)_3(aq)\rightarrow 2Fe(s)+3MgSO_4(aq)[/tex]

In this reaction, the oxidation state of reactant Mg changes from (0) to (+2) that shows oxidation due to increase in oxidation state. So, we can say that Mg is oxidized.

And, the oxidation state of reactant Fe changes from (+3) to (0) that shows reduction due to decrease in oxidation state. So, we can say that Fe is reduced.

Part (b):

The given word equation of chemical reaction is:

Solid carbon + Solid copper oxide → Carbon dioxide gas + Copper metal

The balanced chemical equation of this word equation will be:

[tex]C(s)+2CuO(s)\rightarrow CO_2(g)+2Cu(s)[/tex]

In this reaction, the oxidation state of reactant C (carbon) changes from (0) to (+4) that shows oxidation due to increase in oxidation state. So, we can say that C is oxidized.

And, the oxidation state of reactant Cu changes from (+2) to (0) that shows reduction due to decrease in oxidation state. So, we can say that Cu is reduced.

Answer:

2X₂Y₃    →     4X     +     3Y₂

Explanation:

This problem is about balancing chemical equations.

The reaction is given as:

          X₂Y₃    →     X     +     Y₂

To balance the reaction equation, we use a mathematical approach.

      aX₂Y₃    →     bX     +     cY₂

Conserving X;   2a  = b

                    Y;   3a = 2c

Now, let us make a  = 1

                              b  = 2

                              c  = [tex]\frac{3}{2}[/tex]  

Multiply through by 2;

         a  = 2, b  = 4 , c  = 3;

        2X₂Y₃    →     4X     +     3Y₂

Answer:

More

Explanation: