Determine the empirical formulae of the compounds which contain:
b 5.85g K, 2.10g N, 4.80g O

Answer:

The redox reaction in the question is missing. The reaction is :

Cl 2(g) + Mn 2 +(aq) + 2 H-On â 2 Cl-(aq) + MnO2(s) + 4 H + (aq)

2.59V

Explanation:

A redox reaction is also known as oxidation - reduction reaction. In redox reaction, there is a transfer of electrons between the species. In one species there is oxidation and in the other species there is reduction process.

Cathode half reaction equation:

\($ Cl_2(aq) + 2e \rightarrow 2Cl^- (aq)$\)

Anode half reaction equation:

\($ Mn^2 (aq) + 2H_2O (l) \rightarrow MnO_2 (s) +2e +4H\)

E°cathode= 1.36V

E°anode= -1.23V

E°cell= E°cathode - E°anode

E°cell= 1.36 - (-1.23)

E°cell= 2.59V

Answer:

See the answer

1) 15.0 g of water is heated from 5 °C up to 37 °C. How much energy is absorbed by the water? (The specific heat of liquid water is 4.184 J/g°C.)

2)How many joules of energy is required to bring a five-pound (1 pound = 454 g) bag of ice from its freezer temperature at -20.0°C up to 0°C? The specific heat of ice is 2.10 J/g×°C.

3) A 50.0 mg tissue sample is taken from a patient for diagnosis. While waiting for testing, the sample is stored in a -80.0°C freezer. How much energy is released when the sample is cooled from 20.0°C down to the freezer temperature? You may assume the specific heat of the tissue sample is 3.47 J/g×K.

Answer:

371.4 g of glucose must be metabolized to produce 223 g of water.

The balanced chemical equation for the complete combustion of glucose is:

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

According to the equation, for every 1 mole of glucose consumed, 6 moles of water are produced.

The molar mass of glucose is:

6(12.01 g/mol) + 12(1.01 g/mol) + 6(16.00 g/mol) = 180.18 g/mol

To calculate the mass of glucose required to produce 223 g of water, we need to first convert the mass of water to moles:

223 g / 18.015 g/mol = 12.38 mol H₂O

Now we can use the mole ratio from the balanced equation to calculate the moles of glucose required:

1 mol glucose / 6 mol H₂O = x mol glucose / 12.38 mol H₂O

x = 2.06 mol glucose

Finally, we can calculate the mass of glucose:

mass = moles × molar mass

mass = 2.06 mol × 180.18 g/mol = 371.4 g

Therefore, 371.4 g of glucose must be metabolized to produce 223 g of water.

Learn more about glucose here:

https://brainly.com/question/30548064

#SPJ1

Answer:

The chemical properties of a substance can be determined by performing experiments that use specific materials or processes with known characteristics. If a material affects the substance in a given way, the substance has a particular property. If a process changes the substance, more properties can be deduced.

Hope this helps plz mark brainly:)

Answer:Scientists have identified more than 260,000 kinds of plants. They classify plants according to whether they have body parts such as seeds, tubes, roots, stems, and leaves. The three main groups of plants are seed plants, ferns, and mosses.

Explanation:

hope i help

Answer: I am pretty sure it would be 3.002675

Explanation: 1 moles carbon is 12.0107 grams so divide that by 4 (0.25) and you get 3.002675

Answer: 10

Explanation:

Answer:

v = distance/time = 60m/20s = 3 m/s

Answer:

C

Explanation:

c.) temperature, wind patterns, ice cores

Answer:

C

Explanation:

There are 2.64 × 1022 molecules of sucrose present in this serving of fruit dessert containing 15.0 g of sugar.

To determine the number of molecules of sugar present in the serving, we need to calculate the number of moles of sugar and then convert it to the number of molecules.

Given:

Mass of sugar (sucrose) = 15.0 g

Molar mass of sucrose (C12H22O11) = 342 g/mol

First, calculate the number of moles of sugar using the formula:

Number of moles = Mass of substance / Molar mass

Number of moles of sugar = 15.0 g / 342 g/mol ≈ 0.0439 mol

Next, we use Avogadro's number, which states that there are approximately 6.022 × 10^23 molecules in one mole of a substance. Therefore, to find the number of molecules of sugar:

Number of molecules = Number of moles × Avogadro's number

Number of molecules of sugar = 0.0439 mol × 6.022 × 10^23 molecules/mol ≈ 2.64 × 10^22 molecules

Therefore, there are approximately 2.64 × 10^22 molecules of sugar present in this serving.

for more such question on molecules

https://brainly.com/question/24191825

#SPJ8

The mass of BrCl that is present in the reaction mixture at equilibrium is 0.519 grams

Generally, To calculate the mass of BrCl present at equilibrium, we need to use the equilibrium constant expression (Kp) for the reaction:

Kp = [BrCl]^2 / [Br2] [Cl2]

where [BrCl], [Br2], and [Cl2] are the concentrations of the respective gases at equilibrium.

Since we know the initial amounts of Br2 and Cl2, and the volume of the flask, we can calculate the initial concentrations of each gas.

[Br2]_initial = 0.902 kg / (201.0 L * 0.08206 Latm/molK * 150 K)

= 0.0014 mol/L [Cl2]_initial

= 1.066 kg / (201.0 L * 0.08206 Latm/molK * 150 K)

= 0.0017 mol/L

We are also given the value of Kp, so we can substitute the initial concentrations into the Kp expression and solve for [BrCl].

Kp = [BrCl]^2 / 0.0014 mol/L * 0.0017 mol/L

= (1.1×10^-4)

[BrCl] = √(Kp * [Br2]_initial * [Cl2]_initial)

=√(1.1×10^-4 * 0.0014 mol/L * 0.0017 mol/L)

= 1.61802349*10^{-5} mol/L

To convert molarity to mass, we need to multiply the molarity by the molar mass of BrCl.

The molar mass of BrCl is

(2 * 79.904 g/mol) = 159.808 g/mol.

mass of BrCl = [BrCl] * V * M

=1.61802349*10^{-5}mol/L * 201.0 L * 159.808 g/mol

= 0.519 grams

Read more about mass

https://brainly.com/question/19694949

#SPJ1

Answer: E

Explanation:

Explanation:

We are given: Pressure of Xe gas = 0.607 atm

: Temperature of Xe gas = 24 degrees Celsius

: Volume of Xe gas = 22.1 L

Temperature Xe gas in Kelvins = 24.0 + 273 = 297 K

We know: Ideal gas constant = 0.082 L.atm/K.mol

To find the number of moles of Xe gas, we use the ideal gas law:

Answer:

The number of moles of Xe gas present is 0.55 mol.

Taking into account the definition of Avogadro's number, 0.116 moles of acetic acid are in the sample.

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 6.023×10²³ atoms are contained in 1 mole of carbon, then 1.40×10²³ atoms are contained in how many moles of carbon?

amount of moles of carbon= (1.40×10²³ atoms × 1 mole)÷ 6.023×10²³ atoms

amount of moles of carbon= 0.232 moles

So, the amount of moles of carbon in acetic acid that contains 1.40×10²³ carbon atoms is 0.232 moles.

On the other side, the small subscripts placed to the right of some symbol indicate the number of moles of the element that are found in the compound.

So, in pure acetic acid, CH₃COOH, are present 2 moles of carbon in 1 mole of acetic acid.

Then you can apply the following rule of three: if 2 moles of carbon are present in 1 mole of acetic acid, then 0.232 moles of carbon are contained in how many moles of acetic acid?

\(amount of moles of acetic acid=\frac{0.232 moles of carbonx1 mole of acetic acid}{2 moles of carbon}\)

amount of moles of acetic acid= 0.116 moles

In summary, 0.116 moles of acetic acid are in the sample.

Learn more about Avogadro's Number:

brainly.com/question/1445383?referrer=searchResults

brainly.com/question/1528951?referrer=searchResults

D. a bond between two atoms that have equal electronegativities

Covalent bonds involve 2 atoms sharing electrons.

Covalent Bonds

There are 3 types of bonds: metallic, ionic, and covalent. Metallic bonds occur between 2 metals that exist in a "sea of electrons." Ionic bonds have high electronegativity differences and occur between a metal and a nonmetal. Finally, as stated above, covalent bonds occur when 2 atoms share their electrons. Covalent bonds usually occur between two nonmetals. However, there are 2 types of covalent bonds: polar and nonpolar.

Nonpolar Bonds

Both polar and nonpolar bonds involve the sharing of electrons; however, polar bonds share electrons unequally. This is caused by an electronegativity difference greater than 0.5. When two atoms have equal electronegativities, they share the electrons equally. This creates a nonpolar bond.  

Answer:

What? i think its an incomplete question

Explanation:

Answer:

Carbon alone forms the familiar substances graphite and diamond. Both graphite and diamond are made only of carbon atoms. Graphite is very soft and slippery. Diamond is the hardest substance known to man. If both are made only of carbon what gives them different properties?

The answer lies in the way the carbon atoms form bonds with each other.

Explanation:

The substance begins to boil at 2750⁰C, the substance begins to melt at 1500⁰C, the temperature at which the substance is both a liquid and a gas at 2750⁰C, temperature is the substance both a solid and a liquid​ at 1500⁰C.

Heating curves are the graphical correlations between heat added to a substance. When viewed from a cooling perspective, ie. loss of heat, it is the cooling curve.

The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature. The more heat is required to change the temperature of the substance, the slower it cools, so the smaller the gradient of the curve. The higher the thermal conductivity, the faster heat is transferred, so the faster the substance cools.

Learn more about Heating curve, here:

https://brainly.com/question/29592874

#SPJ1

Answer:

B) 10.1g

Explanation:

Answer:

10.1 g

Explanation:

Answer:

it cleans water and kills the germs

Answer:

If n = 4, then the possible values of 1 and m depend on the equation or expression being used. Without more information, it is impossible to determine what the possible values of 1 and m might be. Can you please provide more context or information about the problem you are trying to solve?

Though this question is a matter of opinion, I can provide a possible answer to help guide you in your writing, by choosing the ecology, atmospheric science and geological fields of earth science.

These fields of study or career paths are especially interesting since they often lead to new discoveries regarding the history of our planet, or insights into the possible future of the Earth. Allow me to offer some examples:

Therefore, we can conclude for the reasons listed above that these 3 career paths are some of the possible choices you can use when deciding your own three most interesting fields in Earth science.

To learn more about the Earth visit:

https://brainly.com/question/14042561?referrer=searchResults

#SPJ1

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.

In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.

Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Learn more about Chemical reaction, refer to the link:
https://brainly.com/question/22817140

#SPJ1

Explanation:

For this question, we need to know that:

Magnesium is Mg

Silver Nitrate is AgNO3

So the complete and balanced reaction is:

Mg + 2 AgNO3 → Mg(NO3)2 + 2 Ag

Also, we need to know that is it a single replacement equation.

Single replacement reactions are those that occur between a compound substance (made up of more than one chemical element) and a simple substance (made up of only one type of chemical element), giving rise to another simple substance and another compound.

Generically, we have:

A + CD → AC + D

This is the case of this reaction.

Answer:

Determine the reaction type

Single replacement.

Finish the word equation

Magnesium + Silver Nitrate → Magnesium nitrate + silver

Write a balanced chemical reaction

Mg + 2 AgNO3 → Mg(NO3)2 + 2 Ag

For single replacement state the transfer of electrons

Electrons are transferred from magnesium to silver.