How much heat would need to be removed to
cool 215.1 g of water from 25.6°C to -10.7°C?

The mass of carbon dioxide produced by the complete combustion of 48.0g of hexane is 147.35g.

The mass of a substance can be calculated by using the stoichiometry approach.

The balanced equation of the complete combustion of hexane is as follows:

2C6H14(g) + 19O2(g) → 12CO2(g) + 14H2O(g)

48g of hexane to moles is calculated as:

48g ÷ 86g/mol = 0.56 mol

2 moles of hexane produces 12 moles of CO2

0.56 mol of hexane will produce 0.56 × 12/2 = 3.35 mol

Next, we convert 3.35 moles of CO2 to mass as follows:

3.35 moles × 44g/mol = 147.35g

Therefore, the mass of carbon dioxide produced by the complete combustion of 48.0g of hexane is 147.35g.

Learn more about mass at: https://brainly.com/question/19694949

#SPJ1

Solar energy is a non-pollutant, which means it doesn't pollute the environment. so therefore A is the correct answer.

This is an exercise in the General Combined Gas Law.

To start solving this exercise, we obtain the following data:

We apply the following formula:

Where:

We clear for final pressure (P2)

[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{P_{1}V_{1}T_{2}}{V_{2}T_{1}} \ \ \to \ \ \ Formula \end{gathered}$}[/tex]

We substitute our data into the formula:

[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{(365 \ mmHg)(4.00 \not{l})(303 \not{K})}{(2.80 \not{l})(293\not{K})} \end{gathered}$}[/tex]

[tex]\large\displaystyle\text{$\begin{gathered}\sf P_{2}=\frac{442380 \ mmHg}{ 820.4 } \end{gathered}$}[/tex]

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf P_{2}=539.224 \ mmHg \end{gathered}$}}[/tex]

Answer: The new canister pressure is 539.224 mmHg.

The theoretical yield of [tex]SnS_2[/tex] will be 4.20 grams while the percent yield will be 7.93%

From the equation of the reaction, the mole ratio of [tex]SnBr_4[/tex] to [tex]Na_2S[/tex] is 1:2.

Mole of 48.1 mL, 0.478 M  [tex]SnBr_4[/tex] = 0.478 x 48.1/100 = 0.023 mols

Mole of 48.8 mL, 0.160 M   [tex]Na_2S[/tex] = 0.160 x 48.8/1000 = 0.0078 moles

[tex]SnBr_4[/tex][tex]Na_2S[/tex] is the limiting reactant.

Mole ratio of  [tex]SnBr_4[/tex]  and [tex]SnS_2[/tex] = 1:1

Equivalent mole of  [tex]SnS_2[/tex] = 0.023 moles

Mass of 0.023 noles [tex]SnS_2[/tex]= 0.023 x 182.81 = 4.20 grams

With 0.0333 g of [tex]SnS_2[/tex] recovered, percent yield = 0.333/4.2 x 100 = 7.93%

More on yields of reactions can be found here: https://brainly.com/question/17042787

#SPJ1

Tin(IV) sulfide, SnS2, a yellow pigment, can be produced using the following reaction.

SnBr4(aq)+2Na2S(aq)⟶4NaBr(aq)+SnS2(s)

Suppose a student adds 48.1 mL of a 0.478 M solution of SnBr4 to 48.8 mL of a 0.160 M solution of Na2S.

1) Calculate the theoretical yield of SnS2. ;

2) The student recovers 0.333 g of SnS2. Calculate the percent yield of SnS2 that the student obtained.

Oil drops do not spread across hot water because the surface tension of hot water is lower than that of oil. The water molecules cannot share intermolecular forces with the oil molecules. Thus the correct option is C.

Oil has a higher surface tension than hot soup. It prevents an oil drop from spreading over the heated soup. The surface tension of oil is lower than that of soup when the soup's temperature drops. As a result, the oil drop begins to spread across the soup.

The cohesive force between oil molecules is less than the adhesive force between oil and water molecules. As a result, water molecules and oil molecules do not mix.

Thus the correct option is C.

To know more about surface tension, visit;

https://brainly.com/question/571207

#SPJ7

Answer:

Explanation:

If you are looking for a weak acid then answer should be b. 6

pH scale goes from 0-14. 0-6 being acid, 7 being neutral, 8-14 being base.

Strong acids are typically low pH like 0-1, since 6 is not in that range it is weak acid.

Option A and C describe base since they are above 7.

Answer:

[tex]D. \ \ \ \text{hydroxyl}[/tex]

Explanation:

Alcohols are organic compounds that are composed of the hydroxyl function group ([tex]-\text{OH}[/tex]), bonded to a carbon atom of an alkyl or a substituted alkyl group. Hence, the functional group of alcohols is the hydroxyl group ([tex]-\text{OH}[/tex]).

According to the International Union of Pure and Applied Chemistry (IUPAC) nomenclature, alcohols are named by changing the -e ending of the name of the parent alkane to the suffix -ol.

For example, the alcohol molecule in the figure demonstrates a hydroxyl group bonded to a methyl group. Therefore, the name of the alcohol is methanol.

13) The limiting reagent is water.

14) Oxyge is in excess by 1.15 mol

13) According to the equation of the reaction:

[tex]2Na + 2H_2O --- > 2NaOH + H_2[/tex]

The mole ratio of the reactants is 1:1.

But 3.10 mol of sodium and 4.17 mol of water were reacted. Thus, water is in excess while sodium is limiting.

14) [tex]2Ca + O_2 --- > 2CaO[/tex]

Mole ratio of reactants = 2:1

4.80 mol Ca and 3.55 mol oxygen were reacted. Thus, oxygen is in excess.

Excess oxygen = 3.55 - 4.80/2 = 1.15 mol

More on limiting reagents can be found here: https://brainly.com/question/11848702

#SPJ1

For 1 mole of S₂O₃²⁻  0.5 mole of S₂O₈²⁻  will be used.

A reaction in which the number of atoms in reactants is equal to the number of atoms in the products is called a balanced reaction.

The reaction given in the question is

S₂O₈²⁻   + 2I⁻      ⇄   2SO₄²⁻ + I₂

I₂ + 2S₂O₃²⁻ ⇄ 2I⁻ + S₄O₆²⁻

Adding the equation will give balance equation

S₂O₈²⁻  + 2I⁻  + 2S₂O₃²⁻   ⇄ 2SO₄²⁻  + 2I⁻ + S₄O₆²⁻

So x moles of S₂O₈²⁻ require 2x of S₂O₃²⁻

for 1 mole of S₂O₃²⁻  0.5 mole of S₂O₈²⁻  will be used.

To know more about Balanced Reaction

https://brainly.com/question/14280002

#SPJ1

Answer:

The ion will attract the substance because it has more electrons than protons.

The oxidizing and reducing agent in the above redox reaction are hydrogen sulphide (H2S) and Chlorine (Cl) respectively.

An oxidizing agent is any substance that oxidizes, or receives electrons from another substance and as a result, becoming reduced.

On the other hand, a reducing agent is any substance that reduces or donates electrons to another and as a result becomes oxidized.

According to this reaction; H2S(aq) + Cl2(g) -> S(s) + 2HCI (aq)

Therefore, the oxidizing and reducing agent in the above redox reaction are hydrogen sulphide (H2S) and Chlorine (Cl) respectively.

Learn more about oxidizing agent at: https://brainly.com/question/10547418

#SPJ1

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the correct option is option D that is low P, high T, high n. Ideal gas is a hypothetical gas.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Vanderwaal gas can behave as ideal gas at low pressure and high temperature.

Mathematically, the ideal gas equation can be written as

PV=nRT

where, the symbols have the following meaning

P = pressure of ideal gas

V= volume  of ideal gas

n =number of moles  of ideal gas

T =temperature  of ideal gas

R = Gas constant = 0.0821 L.atm/K.mol

The conditions of P, T, and n that are most ideal are low P, high T, high n.

Therefore, the correct option is option D that is low P, high T, high n.

To learn more about ideal gas equation, here:

https://brainly.com/question/14826347

#SPJ2

Answer:

18 moles O₂

Explanation:

To convert moles of Al₂O₃ to moles O₂, you first need to determine the balanced reaction. Using the reaction coefficients, you can multiply the starting value by the mole-to-mole ratio of the desired substances.

1 Al₂O₃ ---> 3 O₂ + 2 Al

6 moles Al₂O₃            3 moles O₂
-----------------------  x  -----------------------  =  18 moles O₂
                                   1 mole Al₂O₃

Based on the law of conservation of mass, the expected yield of the decomposition reaction is 100% which is equal to the mass of the reactant.

According to the law of conservation of mass, the mass of products formed when 1 mole of sodium bicarbonate is decomposed by heat will be equal to the mass of one mole of sodium bicarbonate.

The balanced equation of the reaction is given below:

Molar mass of NaHCO₃ = 84. 0 g/mol

Molar mass of Na₂CO₃ = 106 g/mol

Molar mass of H₂0 = 18 g/mol

Molar mass of CO₂ = 44 g/mol

Based on the mole ratio as given in the equation of reaction,

mass of Na₂CO₃ produced = 1/2 * 106 = 53 g

mass of H₂O produced = 1/2 * 18 = 9 g

Mass of CO₂ produced = 1/2 * 44 g/mol = 22 g

Total mass of products = 53 + 9 + 22 = 84.0 g

Therefore, the yield of the decomposition reaction is equal to the mass of the reactant.

Learn more about decomposition reaction at: https://brainly.com/question/27300160

#SPJ1

Answer:

3.1×10^13×917= 2842.7×10^13 kg

2842.7×10^13×334=949,461.8×10^13 KJ

Explanation:

First off you convert m³ to kg then convert Kg to Kj

The amount of heat required to melt the iceberg is [tex]9.58 * 10^{18}kJ[/tex]

Latent heat of fusion is the amount of heat required to melt an unit mass of ice.

Mass of iceberg is [tex]3.1*10^{13} m^{3} *917Kg =2.8427*10^{16} Kg[/tex]

Amount of heat required is calculated as:

[tex]2.8427* 10^{16} * 334 =9.58* 10^{18}kJ[/tex]

Hence, the amount of heat required to melt the iceberg is [tex]9.58*10^{18}kJ[/tex]

To know more about latent heat, visit:

https://brainly.com/question/23976436

#SPJ7

Answer:

Explanation:

Hope this helps

Answer:

Olefin production is a petrochemical process in which saturated hydrocarbons are broken down into smaller, regularly unsaturated ones

Answer: D

Explanation:

The false statement is that the reaction of 17 g of NH3 will produce 27 g of water. (Option D)

A balanced reaction equation is one in which the number of atoms of each element on the right hand side of the equation is equal to the number of atoms of the same element on the left and side of the reaction equation.

The equation of the reaction is 4 NH3 + 5 O2 → 4 NO + 6 H₂O. The number of atoms of each element on both sides are equal.

Hence, the statement that is false from the reaction equation is; "the reaction of 17 g of NH3 will produce 27 g of water".

Learn more about balanced reaction equation:https://brainly.com/question/22064431?

#SPJ1

Answer:

Mn

Explanation:

Looks like Mn   ( Manganese) from the Periodic Table of elements)

there are 25 electrons......25 protons  ....atomic number 25 = Mn

The element is Sodium with an atomic number of 11 and electrovalent bonding takes place when it comes near an atom having seven valence electrons.

This is also referred to as ionic bonding and involves the transfer of atoms of an element to another.

In order for both of them to achieve a stable octet configuration, sodium donates one atom to the element seven valence electrons.

Read more about Electrovalent bonding here https://brainly.com/question/1979431

#SPJ1

Answer: A single electron from the outermost shell of this element will move into the outermost shell of the atom with seven electrons.

Explanation:

Answer:

Some use them to mark their territory, while others use them as skunks do — as a defense mechanism to protect them from predators. Some animals are even named for their odor-producing ability.29 Mar 2021

Explanation:

Skunks have two glands, one on each side of the anus. These glands produce the skunk's spray, which is a mixture of sulfur-containing chemicals such as thiols (traditionally called mercaptans), which have an offensive odor. The thiols also make their spray highly flammable.

Answer:

Noble Metals are found as pure metals becuase they are nonreactive and don't conmbine with other elements to form compounds.

Explanation:

Hope it help :)

Answer:

Basic

Explanation:

The pH scale is measured from 0 to 14.

At the pH scale of 7, a solution is neutral.

Any solution above 7 is basic.

Any solution below 7 is acidic.

Because you have been given the hydronium concentration [H₃O⁺], you can find the pH of the solution using the following formula:

pH = -log[H₃O⁺]

pH = -log(6.0 x 10⁻¹²)

pH = 11.22

As you can see, the solution must be basic because the pH lies within the basic range.

Answer:

hydrogen

Explanation:

because it is my own ideal

Explanation:

Na2WO4 2Na+ + wo4 2-

2Au3+ + 3wo42- Au2(WO4)3

The balanced equation are as follows:

A chemical equation is said to be balanced when the number of moles of each element on both sides of the equation are equal.

According to this question, two equations are given to remove harmful NO and NO2 gases from jet exhaust.

The balanced chemical equations are given below:

Learn more about balanced equation at: https://brainly.com/question/8062886

#SPJ1