What is the molar mass of cryolite

Answer:

7.5 moles of CaBr2 are produced

Explanation:

Based on the equation:

2AlBr3 + 3CaO → Al2O3 + 3CaBr2

2 moles of AlBr3 produce 3 moles of CaBr2 if CaO is in excess.

Using this ratio: 2 moles AlBr3 / 3 moles CaBr2. 5 moles of AlBr3 produce:

5 moles AlBr3 * (3 moles CaBr2 / 2 moles AlBr3) =

Answer:

nose

Explanation:

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the wavelength of light is 2.41×10⁻⁷m.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.

There is a relation between frequency of wave, and wavelength of wave

Mathematically,

ν=c÷λ

where,

ν=frequency of light=1.24 x10¹⁵s⁻¹

c is speed of light that is 3×10⁸m/s

λ is the wavelength of light=?

Substituting all the values

1.24 x10¹⁵s⁻¹=3×10⁸m/s÷λ

λ= 2.41×10⁻⁷m

Therefore, the wavelength of light is 2.41×10⁻⁷m.

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Answer:

Explanation:

The answer is principle of original lateral

Continuity. Hope this helps

Answer:

Volume of HBr = V₂ =  7.5 mL

Explanation:

Given data:

Volume of NaOH =V₁= 25.0 mL

Molarity of NaOH =M₁= 0.150 M

Molarity of HBr =M₂= 0.5 M

Volume of HBr =V₂= ?

Solution:

M₁V₁    =      M₂V₂

0.150 M ×25.0 mL = 0.5 M×V₂

V₂ = 0.150 M ×25.0 mL  / 0.5 M

V₂ = 3.75 M.mL /0.5 M

V₂ =  7.5 mL

Answer:

A. 32.06 g/mol

Explanation:

The molar mass units are always g/mol

its 32.06 g/mol bro its letter A

Answer:

A- SImilar to both copper and oxygen

Explanation:

If copper and oxygen react to form copper oxide, a compound of both Copper and Oxygen, they most likely have traits from both elements, therefore its A

Answer:

BeCL2 .1st column 2nd column 3rd column

1. beryllium 2.chloride. 3.beryllium

chloride

I think there is mistake of chemical this is Na2SO4

Na2SO4-----column 1. column 2

1.disodium 2.sulfate

decahydrate

column 3

3.disodium sulfate decahydrate

Explanation:

this is my answer

Answer:

Brass

Explanation:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

Answer:

The picture on the right with more circles inside of it is more dense

Explanation:

Answer:

2.08L

Explanation:

V1 = 2.00L

P1 = 101kPa

P2 = 97.0kPa

V2 = ?

from Boyle's law,

P1V1 = P2V2

101 × 2 = 97 × V2

V2 = 202/97 = 2.08L

Therefore, the new volume is 2.08L

Answer:

2.1L

Explanation:

Given parameters:

Initial volume  = 2L

Initial pressure  = 101kPa

Final pressure  = 97kPa

Unknown:

Final or new volume  = ?

Solution:

Now to solve his problem which relates pressure and volume, we simply apply Boyle's law which is mathematically expressed below;

          P₁ V₁  = P₂ V₂

P and V are pressure and volume

1 and 2 are initial and final states;[tex]\frac{101 x 2}{97}[/tex]

         101 x 2  = 97 x V₂

              V₂  =  [tex]\frac{101 x 2}{97}[/tex]

               V₂ = 2.1L

Ionic bonds are formed between ionic compounds, Ionic compounds are formed when metals join with nonmetals.

Ionic bonds are electrostatic bonds that are formed between metals and nonmetals. It is an electrostatic attraction between oppositely charged ions in a chemical compound.

These bonds are formed when two or more atoms lose or gain electrons. An example of ionic bonds can be seen in the NaCl compound.

Na⁺ + Cl⁻ = Na⁺Cl⁻

NaCl is formed by the joining of oppositely charged elements. They constitute salt. Salt is made up of ionic compounds, so it easily dissociates into sodium and chloride when mixed in water.

Thus, ionic compounds are created when metals combine with nonmetals, and these combinations result in the formation of ionic bonds.

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Answer:

The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

Explanation:

Answer:

The EM ( electromagnetic) spectrum is generally divided into seven region ,in order of decreasing wave length and increasing energy and frequency.The common designations are:

1. Radio waves

2. Microwave

3. Infrared (IR).

4. Visible light.

5. Ultraviolet (UV).

6. X-rays.

7. Gamma rays.

After mitosis, it is expected that the daughter cells of a fruit fly with 8 chromosomes should have 8 chromosomes.

MITOSIS:

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Answer:

1- number of neutrons

2-  mass

Explanation:

Answer:

sun and ocean. I had this last week

Answer: Molar mass of CUSO4 5H2O = 436.17861 g/mol.

Explanation: Convert grams CUSO4 5H2O to moles or moles CUSO4 5H2O to grams. Molecular weight calculation: 12.0107 + 238.02891 + 32.065 + 15.9994*4 + 5*(1.00794*2 + 15.9994) ›› Percent composition by element.

Answer:

The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells.

Explanation:

Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.

Answer:

Explanation:

The mass of the vehicle can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

From the question we have

[tex]m = \frac{1800}{1.5} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

False

Explanation:

The mole ratio compares the coefficient of compounds reacting and giving products in a chemical reaction.

They are used for converting and showing relationship between reactants and products in a chemical reaction.

 For example;

       2A  →  B + C

the mole ratio is read as;

    2 mole of A produces 1 mole of B and 1 mole of C

Answer:

SOURCES OF GAMMA RAYS

Explanation:

They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes.

Hope This Helps * I Used My Science Book To Answer This

Answer:

im pretty sure it is D

Explanation:

this is an old term for a microscopic organisms that included bacteria, protozoans, and very small animals

Answer: Time needed: 2.5 s

Distance covered: 31.3 m

Explanation:

I'll start with the distance covered while decelerating. Since you know that the initial speed of the car is 15.0 m/s, and that its final speed must by 10.0 m/s, you can use the known acceleration to determine the distance covered by

on one side of the equation and solve by plugging your values

To get the time needed to reach this speed, i.e. 10.0 m/s, you can use the following equation

Explanation:

Answer:

polar

Explanation:

Answer:

NO

Explanation:

Barium cannot ionically bond with Kalium. Kalium is the Latin name for potassium.

Both Barium and potassium are metals. Metals and Metals do not combine to form ionic compounds. Only metals and non-metals form this bond type.

Answer:

Explanation:

The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).

The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms. hope this helps...

Answer:

3.97 x 10²³atoms

Explanation:

Given parameters:

Mass of ammonia = 11.22g

Unknown:

Chemical amount of ammonia present  = ?

Solution:

The chemical amount present in a substance is the number of atoms it contains.

To solve this problem, from the given mass find the number of moles first.

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]

Molar mass of NH₃   = 14 + 3(1) = 17g/mol

  Number of moles  = [tex]\frac{11.22}{17}[/tex]   = 0.66mole

   1 mole of any substance contains  6.02 x 10²³ atoms

  0.66 mole of ammonia will contain 0.66 x 6.02 x 10²³ atoms

                                                            = 3.97 x 10²³atoms

Answer:

Energy from different sources leads to different types of rocks.

Explanation: Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into different types of rock.

Rocks are formed in earth by the deposition of minerals and decomposition of massive tectonic plates by the hot magma which is melted by the heat energy radiated from sun.

There are broadly three different types of rocks, namely sedimentary rocks, igneous rocks and metamorphic rocks . They are classified based on their formation and composition.

The magma that the molten mineral fluid inside the earth crest melts under heat radiated from sun and this hotter fluid flows results in movement of tectonic plates and decomposition at some places.

Therefore, the heat energy and resultant convection current leads the tectonic plate boundaries and formation of different kinds of rocks which are stimulated by the action of air and water.

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