what is the maximum amount of KNO3 that can be dissolved in 100 g of 50 C water ? A. 15g B. 36g C. 84g D. 100g

The option that correctly describes a covalent species that has four electron groups around the central atom are:

It should be noted that when a molecule have four electron groups and it is been found around the central atom and this will orients the four groups in the direction of a tetrahedron.

However when there are  four atoms attached to these electron groups, in Tetrahedral Geometry, molecular shape  will also be also tetrahedral.

Instance of this is Methane (CH 4), in conclusion, in the case whereby all four electron pairs are bonding pairs, then it can be concluded that the  shape of the system is tetrahedral.

Learn more about atom at:

https://brainly.com/question/6258301

#SPJ1

missing options:

The ideal bond angle for a four-electron system is 109.5°.

If all four electron pairs are bonding pairs, the shape of the system is tetrahedral.

The eletron are not bonding in the system.

A bent shape is observed if there are two bonding pairs and two lone pairs.

Calcium chloride, CaCl2, is a white, crystalline salt that is very soluble in water.

Calcium chloride is an inorganic compound, a salt with the chemical method CaCl 2. it is a white crystalline strong at room temperature, and it's miles exceptionally soluble in water.

Solubility is defined as the maximum amount of a substance in an effort to dissolve in a given quantity of solvent at a special temperature. Solubility is a characteristic asset of a particular solute-solvent combination, and special substances have significantly differing solubilities.

Solubility refers to the finest quantity of solute that may dissolve in a recognized quantity of solvent at a given temperature. In a solvent, an answer is a homogeneous mixture of one or more solutes. A not unusual instance of an answer is sugar cubes brought to a cup of tea or coffee.

Dissolution is the process where a solute in a gaseous, liquid or stable section dissolves in a solvent to shape an answer. Solubility is the maximum awareness of a solute that may dissolve in a solvent at a given temperature. at the most attention of solute, the solution is said to be saturated.

Learn more about solubility here:-https://brainly.com/question/23946616

#SPJ1

The percent yield of KCl is 82.2 %. The percent yield of sodium hydroxide is 36.99 %. The reaction produces about 1.35 L of water.

1)

Number of moles of potassium chlorate = 1200.0 grams/122.55 g/mol

= 9.79 moles

If 2 moles of potassium chlorate produces 2 moles of potassium chloride then 9.79 moles of potassium chloride is produced.

Theoretical yield =  9.79 moles * 74.55 g/mol

= 729.8 g

Percent yield = actual/theoretical * 100/1

=  600.0 grams / 729.8 grams * 100/1

= 82.2 %

2)

Number of moles of water = 705 grams/18 g/mol = 39.2 moles

Number of moles of sodium oxide = 302 grams/62 g/mol

= 4.9 moles

If the reaction is 1:1 the sodium oxide is the limiting reactant

1 mole of sodium oxide produces 2 moles of sodium hydroxide

4.9 moles of sodium oxide produces 4.9 moles  * 2 moles/ 1 mole

= 9.8 moles

Theoretical yield of the sodium hydroxide = 9.8 moles * 40 g/mol

= 392 g

Percent yield = 145 g/392 g * 100/1

= 36.99 %

3)

Mass of the pentane = density * volume

= 0.6262 g/mL * 3000 mL

= 1878.6 g

Number of moles of the pentane = 1878.6 g/72 g/mol

= 26.1 moles

Number of moles of oxygen = 3200.0 g/32 g/mol

= 100 moles

If 1 mole of pentane reacts with 8 moles of oxygen

26.1 moles of pentane reacts with 26.1 moles * 8 moles/1 mole

= 208.8 moles

Hence oxygen is the limiting reactant

If 8 moles of oxygen produces 6 moles of water

100 moles of oxygen would produce 100 moles * 6 moles/8 moles

= 75 moles

Mass of water produced = 75 moles * 18 g/mol = 1350 g

Since volume = mass/density

Volume of water = 1350 g/1.00 g/mL

= 1350 mL or 1.35 L

Learn more about limiting reactant:https://brainly.com/question/14225536

#SPJ1

By tying to the minerals in the water, washing soda "softens" the water so that detergents can more easily remove dirt from fabric. Coffee and tea stains on ceramics as well as grease from pots and pans can be eliminated with washing soda.

chemical reaction

Na₂CO₃ + 10H₂O → Na₂CO₃.10H₂O

Decomposition reaction involved in washing soda. Heat causes carbon dioxide and sodium oxide to decompose.

Solvay's method is used to create washing soda. Sodium chloride, ammonia, and carbon dioxide react in water as part of Solvay's process. Calcium oxide is used to recover ammonia from ammonium chloride while calcium carbonate is used to produce carbon dioxide.

To know more about washing soda visit:

https://brainly.com/question/1371291

#SPJ1

Pour water into a graduated cylinder, measure the volume, submerge the object, and measure the volume again. The metal cylinder has a density of 0.1167.

These cylinders are used to test density and specific gravity. Smooth surfaces and meticulously turned ends. a collection of six various pieces in cylinder shape for density in electrical and thermal studies.

Weighing a metal object twice, once in air and once submerged in a liquid, yields the density of the metal, as described in the section The science behind density measurements.

An item of laboratory equipment known as a measuring cylinder, graduated cylinder, cylinder measurement, or mixing cylinder is used to measure the amount of liquids, chemicals, or solutions during routine lab work.

The object's volume can be calculated as the difference between the two volume measurements. The density of the object can now be determined by simply dividing the mass by the volume.

79.95 - 70.00 = 9.95

=9.95 ÷ 85.20

=0.1167

To learn more about metal cylinder refer to:

https://brainly.com/question/28795691

#SPJ1

Answer:

J.J. Thomson.

Explanation:

The credit for the discovery of the electron and its properties goes to J.J. Thomson based on his experiments carried out in a discharge tube. He suggested that electrons are necessary constituents of all atoms. J.J. Thomson carried out experiments by taking a gas at low pressure of 0.01mm Hg in a discharge tube.

Answer:

J.J. Thomson used a Crookes, or cathode ray, tube to conduct experiments that led to the discovery of the electron in 1897. He provided evidence that cathode rays have a negative charge. He also investigated positively charged neon gas particles.

Explanation:

Molarity (M) is the amount of a substance in a sure quantity of solution. Molarity is described because the moles of a solute according to liters of an answer. Molarity is also called the molar attention of an answer.

Calculation:-

mass = 0.600 g

the molar mass of NaNO₃ = 85 g

moles = 0.600/85

           = 0.007 moles

volume = 2 L

molarity = moles/volume

            = 0.007 /2

            = 0.035 M

Molar concentration is a measure of the attention of a chemical species, specifically of a solute in an answer, in terms of the amount of substance in step with the unit extent of the answer. In chemistry, the most generally used unit for molarity is the number of moles in keeping with liter, having the unit symbol mol/L or mol/dm³ in SI unit.

Learn more about molarity here:-https://brainly.com/question/14469428

#SPJ1

Based on the concentration and pH of monoprotic acid, the Ka for the acid is 4.04 * 10⁻⁶.

Acids are defined as a substance that when dissolved in water produces hydrogen ions as the only positive ions in the solution.

The number of hydrogen ions that an acid produces per molecule of the solution is known as the basicity of the acid.

When an acid produces one mole of hydrogen ions per molecule of acid, the acid is said to be monobasic or monoprotic.

When an acid produces two moles of hydrogen ions per molecule of acid, the acid is said to be dibasic or diprotic.

The given acid is said to be monoprotic.

Let the monoprotic acid be HA.

The dissociation of HA in the solution is given as follows:

HA ⇄ H⁺ + A⁻

Ka = [H⁺] * [A⁻] / [HA]

[H⁺] = [A⁻]

The pH of the acid solution is 2.69

Hence

[tex][H^{+}] = 10^{-pH}[/tex]

[tex][H^{+}] = 10^{-2.69}[/tex]

[H⁺] = 0.00204

[A⁻] = 0.00204

[HA] = 1.03 M

Hence, Ka will be:

Ka = (0.00204 * 0.00204) / 1.03

Ka = 4.04 * 10⁻⁶

Learn more about Ka of acids at: https://brainly.com/question/28163244

#SPJ1

Consider the following mechanism.

The overall balanced chemical equation : 2O₃  ---->   3O₂

The intermediates within the mechanism : O

The order with respect to each reactant :  2

The rate law for the overall reaction : R = k[O₃]²/[O]

The equations are :

O₃  ---->   O₂  +  O   fast

O₃  +   O  --->  2O₃   slow

a) The overall reaction is given as :

2O₃  ---->   3O₂

b) The intermediates within the mechanism is O.

c)  The order with respect to each reactant is 2

d) slow step rate : k[O][O₃]

at equilibrium, kc = [O][O₂] / [O₃]

The rate law = R = k[O₃]²/[O]

Thus, Consider the following mechanism.

The overall balanced chemical equation : 2O₃  ---->   3O₂

The intermediates within the mechanism : O

The order with respect to each reactant :  2

The rate law expression for the reaction : R = k[O₃]²/[O]

To learn more about rate law here

https://brainly.com/question/21256997

#SPJ1

The pH of the ethanoic acid can be obtained as 3.39.

We know that the pH has to do with the negative logarithm of the hydrogen ion concentration of a solution. We know that we have to apply the formula for the pH so as to obtain the pH of the solutions.

pH of hydrochloric acid = - log( 0.100) = 1

pH of sulphuric acid = - log( 0.025 ) =1.6

pH of nitric acid = - log (0.005) = 2.3

pH of phosphoric acid = - log ( 0.200) = 0.69

We say that HCl is a strong acid because it s able to dissociate completely in solution while the ethanoic acid does not dissociate completely in solution.

For the dissociation of ethanoic acid we have;

Ka = [[tex]H_{3} O^+[/tex]] [[tex]CH_{3} COO^-[/tex]]/[[tex]CH_{3} COOH[/tex]]

1.7 x10^-5 = x^2/0.01 - x

1.7 x10^-5(0.01 - x) =x^2

1.7 * 10^-7 - 1.7 x10^-5x - x^2 = 0

x^2 + 1.7 * 10^-5x - 1.7 * 10^-7 = 0

x=0.0004 M

pH = - log(0.0004 )

pH = 3.39

Learn more about pH:https://brainly.com/question/15289741

#SPJ1

The binding energy per nucleon for the ¹⁹F nucleon is equal to 7.786 MeV/nucleon.

Binding energy can be defined as the minimum quantity of energy that is required to remove the particle from the system. Nuclear binding energy can be described as the energy required to dismantle a nucleus of an atom into free neutrons and protons.

The binding energy will be determined from the mass defect. Mass defect is calculated from the difference between the mass observed and the expected combined mass.

Given the mass of the ¹⁹F = 18.9984 a.m.u.

The mass defect for the ¹⁹F can be calculated as:

Δm = [tex](M _n +M_p) - M_F[/tex]

[tex]\triangle m =( 9\times 1.0078 + 10 \times 1.0087 )- 18.9984[/tex]

[tex]\triangle m =0.1588 \;a.m.u.[/tex]

The binding energy for the fluorine can be calculated as:

E = Δmc²

E = 0.1588 × 931.5

E = 147.92 MeV

The binding energy per nucleon of ¹⁹F can be calculated as:

B.E.N. = 147.92/18.9984 = 7.786 MeV per nucleon

Learn more about binding energy, here:

https://brainly.com/question/10095561

#SPJ1

The reaction used to prepare iodine in the laboratory is

2LiI(s)+2H₂SO₄(aq)+MnO₂(s)→Li₂SO₄(aq)+MnSO₄(aq)+I₂(aq)+2H₂O(l)

The oxidation state of Li in LiI is +1 and of I in LiI is -1.

The oxidation state of the element is defined as the number of electrons gained or lost by an element in the compound. Since Li is present in the 1st group of the periodic table and it contains one valence electron in it. It loses one electron to form Li⁺ ion. Hence, the oxidation state of Li in LiI is +1.

Iodine(I) element is present in the 17th group of the periodic table. It contains seven valence electrons in it and it requires one electron to complete its octet. When it gains one electron, it forms I⁻ ion. Hence, the oxidation state of I in LiI is -1

Therefore, the oxidation state of Li in LiI is +1 and of I in LiI is -1.

To know more about oxidation state

https://brainly.com/question/11313964

#SPJ1

Answer:

The number of molecules of water us 1.50× 10²⁵ molecules

Explanation:

From N=nL

where L =avogadro number ( 6.02× 10^²³ entities)

The number of the molecules of water =1

n (amount of substance)=25 moles

hence (N) = 25×1×6.02×10^²³

=1.50×10²⁵ molecules of H2O

The volume of 0.100M NaCl that would be required to make a 0.0350M solution of NaCl when diluted to 150.0mL with water is 52.5mL.

The volume of a diluted solution can be calculated using the following formula;

CaVa = CbVb

Where;

According to this question, 0.100M NaCl would be required to make a 0.0350M solution of NaCl when diluted to 150.0mL with water. The volume can be calculated as follows:

0.1 × Va = 0.0350 × 150

0.1Va = 5.25

Va = 52.5mL

Therefore, 52.5mL is the volume required to dilute the sodium chloride solution.

Learn more about volume at: https://brainly.com/question/22762236

#SPJ1

Answer:

b. i)

[tex]MgSO_{4} + 2NaOH ---- > Mg(OH)_{2} + Na_{2}SO_{4}[/tex]

try balancing Sodium first. There's 2 Sodium on the product side. So multiply 2 with NaOH, then you'll see the that there are equal no. of Na and OH on both sides so the equation is balanced

ii) Using the solubility table, we see that when OH- bonds with a metal, in most cases it would produce insoluble product i.e. precipitate. So Mg(OH)2 will form precipitate.

iii. it's a redox reaction. It can also be called a substitution reaction & precipitation reaction.

iv. (SO4)2- produces aqueous solution. NaOH is soluble in water unlike the group 2 metal hydroxides. So the reaction would be

[tex]MgSO_{4}(aq) + 2NaOH(aq) ---- > Mg(OH)_{2}(s) + Na_{2}SO_{4}(aq)[/tex]

c. Iron(II) chloride = Fe(Cl)2

Sodium Carbonate = NaHCO3

Reaction:

[tex]FeCl_{2} + Na_{2}CO_{3} ---- > FeCO_{3} +2 NaCl[/tex]

The balanced chemical reaction equation is; [tex]MgSO_{4} (aq) + 2NaOH (aq) ----- > Mg(OH)_{2} (s) + Na_{2} SO_{4} (aq)[/tex]. This is a double replacement reaction and the magnesium hydroxide is insoluble in water.

We know that sometimes, when we mix two reactants that are in the aqueous state, we do get a product that is in the solid state. This implis that the intrecation between the reactants has given rise to an insoluble product. An insoluble product is a product that would not dissolve in the reaction system.

We know that the hydroxides of the alkaline earth metals are insoluble in water according to the solubility rules. Recall that the solubility rules tells us the kind of interactions that could lead to an insoluble product.

This reaction is an example of a double replacement reaction and the equation of the reaction can be shown as; [tex]MgSO_{4} (aq) + 2NaOH (aq) ----- > Mg(OH)_{2} (s) + Na_{2} SO_{4} (aq)[/tex]

Learn more about reaction:https://brainly.com/question/28984750

#SPJ1

Answer: 212

Explanation:

Answer:

12.044 × 10^23

Explanation:

Molecular mass is the sum of atomic masses of the elements present in a molecule. 12 gram of carbon that is one mole contains

6.022×10^23 atoms.

. It is called Avogadro's constant.

So, Number of particles = Given number of moles

×

Avogadro number.

Therefore, the number of atoms of He in 2.0 moles = 2.0×6.022×10^23 = 12.044×10^23

There are

12.044×10^23

atoms in 2.0 moles of Helium.

When sucrose is hydrolyzed, fructose and glucose will be created as the glycosidic linkage is broken. Hydrolyzed sucrose will give a positive Benedict's test. Hydrolysis can be achieved by adding dilute sulfuric acid.

Sucrose is a disaccharide sugar composed of glucose and fructose monomer units linked together by glycosidic bonds.

Because there are no free aldehyde groups, a sucrose molecule is not reducing.

Hydrolysis of sucrose yields fructose and glucose.

Learn more about sucrose at: https://brainly.com/question/28297399

#SPJ1

The molecular or formula mass of each of the given substances is given below:

(a) P₄ = 128 amu

(b) H₂O = 18 amu

(c) Ca(NO₃)₂ = 124 amu

(d) CH₃CO₂H (acetic acid) = 60 amu

(e) C₁₂H₂₂O₁₁ (sucrose, cane sugar) = 342 amu

The molecular or formula mass of a substance id the sum of the masses of the atoms of the elements present in that substance.

The molecular or formula mass of each of the given substances is determined as follows:

(a) P₄ =  32 * 4

P₄ = 128 amu

(b) H₂O = 2 * 1 + 16

H₂O = 18 amu

(c) Ca(NO₃)₂ = 40 + (14 * 2 + 16 * 3 * 2)

Ca(NO₃)₂ = 124 amu

(d)  CH₃CO₂H = 2 * 12 + 4 * 1 + 16 * 2

CH₃CO₂H = 60 amu

(e) C₁₂H₂₂O₁₁  = 12 * 12 + 1 * 22 + 16 * 11

C₁₂H₂₂O₁₁ = 342 amu

Learn more about molecular or formula mass at: https://brainly.com/question/21334167

#SPJ1

Answer:

As altitude increases, partial pressure of O2 increases. -

Explanation:

-As altitude increases, partial pressure of O2 increases. -As atmospheric pressure increases, available O2 increases. -As atmospheric pressure increases, partial pressure of O2 increases. Boyle's law states there is a direct relationship between the pressure and volume of a gas at a constant temperature.

Answer:

True (the statement is correct)

Explanation:

Yeah, resilience describes an ecosystem's ability to maintain dynamic equilibrium.

Resilience is the capacity to cure from difficulties. Hence, the statement is true.

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.25moles  of He are in a container with a volume of 5.6 L at STP.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

One mole of ideal gas has 22.4L volume at STP.

number of moles of Helium = Given volume ÷volume occupied by gas at STP

Given volume of helium = 5.6 L

Substituting all the given values, we get

number of moles of Helium = 5.6 L  ÷22.4L

number of moles of Helium =0.25moles

Therefore, 0.25moles  of He are in a container with a volume of 5.6 L at STP.

To know more about mole, here:

https://brainly.com/question/15209553

#SPJ1

Answer: 0.25 moles

Explanation:

Given volume of helium = 5.6 L

Substituting all the given values, we get

number of moles of Helium = 5.6 L  ÷22.4L

number of moles of Helium =0.25moles

Therefore, 0.25moles  of He are in a container with a volume of 5.6 L at STP.

Answer:

36.132 × 10²³ atoms of Si

Explanation:

Formula we use,

→ No. of moles × 6.022 × 10²³

Now the atoms will be,

→ No. of moles × 6.022 × 10²³

→ 6 × 6.022 × 10²³

→ 36.132 × 10²³

There are 36.132 × 10²³ atoms.

Answer:

12.044×10^23

Explanation:

Molecular mass is the sum of atomic masses of the elements present in a molecule. 12 gram of carbon that is one mole contains

6.022×10^23 atoms

. It is called Avogadro's constant.

So, Number of particles = Given number of moles

×

Avogadro number.

Therefore, the number of atoms of He in 2.0 moles = 2.0× 6.022×10^23= 12.044×10^23

There are

12.044×10^23

atoms in 2.0 moles of Helium.

The order of the components of the electromagnetic spectrum from shortest wavelength to longest is as follows: 3-5-2-1-7-6-4.

Electromagnetic spectrum is the entire range of wavelengths of all known electromagnetic radiations extending from gamma rays, to X-rays through visible light, infrared, to radio waves.

The components of the electromagnetic spectrum from order of shortest to longest wavelength is as follows;

This suggests that gamma rays have the shortest wavelength while radio waves have the longest wavelength.

Learn more money electromagnetic spectrum at: https://brainly.com/question/23727978

#SPJ1

The act of repeatedly carrying out a task is known as repetition. Replication is the capacity of a procedure to be replicated by another person in the exact same way.

To learn more about replication refer to :

https://brainly.com/question/28210485

#SPJ1

Answer:

1. Zinc

2. Calcium

3. Francium

4. Phosphorus

5. Neon

Explanation:

Add the no. of electrons in each orbital. The sum is the atomic number of the element

The energy in the battery was transformed into electrical energy, light energy, and heat energy is the best explanation of the energy in the circuit (Option A).

The energy is conserved in a battery as chemical energy that can be used by converting it into electrical energy, a process that is well known to release heat.

Therefore, with this data, we can see that the energy conserved in a battery is a form of chemical energy that can be converted into electrical energy for use.

Learn more about the energy in a battery here:

https://brainly.com/question/26440081

#SPJ1

The heat released by 100g of the compound is  2.8 x10^3 kJ .

We know that the process of combustion is the process that enables a substance to be burnt in air. Heat and light can be produced in the process of the combustion.

Number of moles of the Methylhydrazine =  mass/ molar mas = 100.0g/46 g/mol = 2.17 moles

If from the balanced reaction equation;

1 moles of Methylhydrazine produces 1.30x10^3 kJ

Then 2.17 moles of Methylhydrazine produces  2.17 moles *  1.30x10^3 kJ/1 mole

= 2.8 x10^3 kJ of heat.

Learn more about heat of combustion:https://brainly.com/question/14317568

#SPJ1