Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 5.50 mL of butane (d = 0.579 g/mL). (b) How many moles of H₂O form when all the butane burns?

Answer: A an apple has the mass of 86.5g

Explanation:

Quantitative measurements are those that deal with a quantity, for example:

Mass of as sample

Length of a piece of wire

Molecules in a mole

Volume of a gas

Temperature of a sample

Taking into account the definition of density, the volume of cyclohexane should be 23.13 mL.

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space and allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is:

density= mass÷ volume

In this case, you know that:

Replacing in the definition of density:

0.7781 g/mL= 18 g÷ volume

Solving:

0.7781 g/mL ×volume= 18 g

volume= 18 g÷ 0.7781 g/mL

volume= 23.13 mL

In summary, the volume of cyclohexane should be 23.13 mL.

Learn more about density:

brainly.com/question/952755

brainly.com/question/1462554

#SPJ1

Answer:

3.91 on Acellus

Explanation:

1.88 g potassium would be have been used to produce 10.32 g K2S, meaning that 6.41 g S would be left over.

The chemical element with the atomic number 19 and the letter K is potassium. Potassium is a silvery-white metal that may be easily and gently sliced with a knife. Within seconds of exposure, potassium metal quickly combines with air oxygen to produce flaky, white potassium peroxide.

Potassium can be obtained as a dietary supplement and naturally in many foods. Its primary function in the body is to support the maintenance of regular fluid levels inside our cells. It's opposite, sodium, keeps fluid levels within cells normal. Additionally, potassium supports proper blood pressure and aids in the contraction of muscles.

2K + S → K₂S

two moles K react with one mol S

6.41 g S react with K to formed 10.32g of K₂S

stoichiometric ratio of K:S is 2.44

reaction conditions your supplied ratio of K:S is 1.28

Therefore, sulfur is in excess and potassium is the limiting reagent.

The reaction of 6.41 g S would produce 10.32g K2S

The reaction of  6.41 g S would produce  6.41 (10.32/78.2) = 6.47 g K2S

Thus, 1.88 g K would be have been used to produce 10.32   g K2S, meaning that 6.41 g S would be left over.

To learn more about potassium, follow the link;

https://brainly.com/question/13321031

#SPJ2

Answer:

They have like charges

Explanation:

Like charges repel, opposite charges attract

The most likely reason the comb is able to repel the balloon is that, the balloon and the comb have the same electrical charge.

The question is incomplete, the complete question is;

One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?

A.The balloon has a positive charge and the comb is neutral.

B. The balloon and the comb have the same electrical charge.

C. The balloon has a negative charge and the comb is neutral.

D. The balloon and the comb have opposite electrical charges

When the student rubs a balloon against his hair several times or another student passes a comb through her hair several times, static charges are built up on the balloon and the comb.

One of the ways by which a neutral object can be charged is by friction. That is, rubbing it against another object repeatedly.

The fact that when the students place the comb near the balloon and observe that the comb repels the balloon means that both the comb and the balloon acquired the same kind of charge after friction.

Therefore, the balloon and the comb have the same electrical charge.

Learn more: https://brainly.com/question/12240595

592.0 mL of carbon dioxide gas will be produced at 78°C and 45.5 psi pressure with 900.0 mL of 3.00M phosphoric acid and 235 grams of iron (III) carbonate.

The balanced chemical equation for the reaction of phosphoric acid and iron (III) carbonate is:

2H3PO4(aq) + Fe2(CO3)3(s) → 2FePO4(s) + 3CO2(g) + 3H2O(l)

The molar mass of phosphoric acid is 98.00 g/mol and the molar mass of iron (III) carbonate is 231.53 g/mol. The number of moles of phosphoric acid in 900.0 mL of 3.00M solution is:

n = M * V = 3.00 mol/L * 900.0 mL = 2700.0 mol

The number of moles of iron (III) carbonate in 235 grams is:

n = m / M = 235 g / 231.53 g/mol = 1.02 mol

The limiting reagent is the reactant that is present in the smallest amount. In this case, the limiting reagent is iron (III) carbonate. The number of moles of carbon dioxide gas produced is equal to the number of moles of iron (III) carbonate reacted. The volume of carbon dioxide gas at 78°C and 45.5 psi pressure can be calculated using the ideal gas law:

PV = nRT

where:

P = pressure (45.5 psi)

V = volume (mL)

n = number of moles (1.02 mol)

R = ideal gas constant (0.08206 L * atm / mol * K)

T = temperature (78°C = 361 K)

Solving for V, we get:

V = nRT / P = 1.02 mol * 0.08206 L * atm / mol * K * 361 K / 45.5 psi = 592.0 mL

For such more questions on pressure

https://brainly.com/question/29525868

#SPJ8

Answer:

Yes

Explanation:

A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.

Triacylglycerols are the major form of stored energy instead of glucose because they have a higher energy density due to their hydrophobic nature, they can be easily transported in the blood serum, and they yield more energy per carbon upon oxidation compared to glucose.

Triacylglycerols are more advantageous as a stored energy form compared to glucose for multiple reasons. Firstly, triacylglycerols have a higher energy density because of their hydrophobic nature. They are not solvated by water and therefore have less mass per unit volume, allowing for more energy to be stored in the same volume.

Secondly, triacylglycerols are highly soluble in blood serum, enabling efficient transportation to different parts of the body where energy is needed. This solubility facilitates the mobilization and delivery of stored energy to meet metabolic demands.

Lastly, the fatty acids in triacylglycerols are at a higher reduction state compared to glucose. This higher reduction state means that fatty acids yield more energy per carbon upon oxidation. Thus, the oxidation of fatty acids in triacylglycerols provides a greater amount of energy compared to the oxidation of glucose, making them an efficient energy source for the body.

Overall, the combination of higher energy density, easy transportability, and greater energy yield per carbon make triacylglycerols the preferred form of stored energy in the body compared to glucose.

To learn more about Triacylglycerols click here : brainly.com/question/31609332

#SPJ11

The concentration of the H2SO4 solution is 1.00 mol/dm³ or 0.08 cm³/mol. Option D.

The balanced chemical equation for the reaction between Na2CO3 and H2SO4 is:

Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2

From the equation, we can see that 1 mole of Na2CO3 reacts with 1 mole of H2SO4. Therefore, the number of moles of H2SO4 used in the reaction is:

moles of H2SO4 = 25.00/1000 × C

where C is the concentration of the H2SO4 solution in mol/dm³.

The number of moles of Na2CO3 in the solution is:

Since 20.00 cm³ of the solution contains the above amount of Na2CO3, then 100 cm³ of the solution contains:

Since the reaction between Na2CO3 and H2SO4 is a neutralization reaction, the number of moles of H2SO4 used in the reaction is equal to the number of moles of Na2CO3 in the solution. Therefore:

0.025 mol H2SO4 = 0.005 mol Na2CO3

Substituting the expression for moles of H2SO4 above, we get:

Therefore, the concentration of the H2SO4 solution is 1.00 mol/dm³ or 0.08 cm³/mol.

More on stoichiometric calculations can be found here: https://brainly.com/question/27287858

#SPJ1

Answer:

Boron B

Explanation:

According to the periodic table, Boron is the element with atomic mass of approximately 11 [i.e 10.81]

To calculate Neutrons

Neutrons = Mass number - Protons

Number of protons in Boron is same as atomic number which is 5

Thus, N = 11 - 5 = 6

Ionic bonds are formed by I and V

Ionic bonds are formed between two atoms or ions with opposite charges. One atom or ion donates one or more electrons to the other atom or ion, which accepts the electrons, resulting in the formation of an ionic compound.

Ionic bonding typically occurs between a metal and a non-metal, although there are exceptions. Metals tend to lose one or more electrons to become positively charged cations, while non-metals tend to gain one or more electrons to become negatively charged anions.

Learn more about Ionic bonds:https://brainly.com/question/11527546

#SPJ1

The organic product formed when 1−hexyne is treated with the H₂O, H₂SO₄ and HgSO₄ is 2 - hexanone.

The reaction of the 1−hexyne is treated with the H₂O, H₂SO₄ and HgSO₄ is given as :

CH₃- CH₂ - CH₂ - CH₂ - C ≡ CH   + H₂O / H₂SO₄ / HgSO₄ ----->

1 - hexyne                                                    CH₃- CH₂ - CH₂ - CH₂ - CO - CH₃  

                                                                                     2 - hexanone

Thus, the when the 1 - hexyne react with the   H₂O, H₂SO₄ and HgSO₄ is 2 - hexanone the product is formed is known as the 2 - hexanone.    the above is the reaction for the formation of 2 - hexanone.

To learn more about 1 - hexyne here

https://brainly.com/question/19558515

#SPJ4

The volume of calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point is 87.5 mL.

In the given case, we have to calculate the volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point.

The chemical equation for the reaction of phosphoric acid with calcium hydroxide is given below:

H₃PO₄ + Ca(OH)₂ → Ca(H₂PO₄)₂ + 2H₂O

Molar mass of H₃PO₄ = 3(1.008) + 1(30.974) + 4(15.999)

                                    = 98.0 g/mol

Molar mass of Ca(OH)₂ = 1(40.078) + 2(15.999)

                                         = 74.1 g/mol

Number of moles of H₃PO₄ in 35.0 mL of 0.440 M

phosphoric acid= Molarity × Volume(in liters)

= 0.440 × (35.0/1000)

= 0.0154 mol

Number of moles of Ca(OH)₂ required to react completely with 0.0154 mol of H₃PO₄= 0.0154 mol

Number of moles of Ca(OH)₂ present in the solution

= Molarity × Volume(in liters)

= 0.530 × Volume

Calcium hydroxide will react with phosphoric acid until the third equivalence point is reached.

Ca(OH)₂ + 2H₃PO₄ → Ca(H₂PO₄)₂ + 2H₂O(moles)

0.0154         0.031                0.0464

(Molarity) 0.53              0.53              0.53

(Volume)    V₁                   V₂                         V₃

Equivalence point is the point where the number of moles of two reactants is equal to each other.The number of moles of H₃PO₄ is equal to the number of moles of Ca(OH)₂ at the third equivalence point,

So, 0.0464 mol of Ca(OH)₂ is required to react completely with 0.0154 mol of H₃PO₄  .

Volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point

= (0.0464 mol)/(0.530 mol/L)

= 0.0875

L= 87.5 mL (rounded to three significant figures)

Therefore, the volume of 0.530 M calcium hydroxide solution required to titrate 35.0 mL of 0.440 M phosphoric acid to the third equivalence point is 87.5 mL.

Learn more about equivalence point :

brainly.com/question/31484109

#SPJ11

The number of electrons allowed in each of the following:

a. fourth principal energy level: The fourth principal energy level can hold up to 8 electrons.

b. any d sublevel: The d sublevels can hold up to 18 electrons each.

c. a 2p orbital: The 2p orbital can hold up to 6 electrons.

The d sublevels are specific energy levels within the fourth principal energy level that are occupied by electrons with specific values of angular momentum (also known as spin). These sublevels are numbered in order of increasing energy, with the lowest energy sublevel being the s sublevel and the highest energy sublevel being the f sublevel. The d sublevels can hold up to 18 electrons each.

Therefore, the maximum number of electrons allowed in each of the given options are:

a. fourth principal energy level: 8

b. any d sublevel: 18

c. a 2p orbital: 6  

Learn more about electrons Visit: brainly.com/question/26084288

#SPJ4

a. Yes, a chemical reaction occurs:

  Cu(s) + Pb(NO3)2(aq) → Cu(NO3)2(aq) + Pb(s)

b. No, no chemical reaction occurs.

When a strip of solid copper metal is placed in a beaker containing 0.088 M Pb(NO3)2 solution, a chemical reaction ensues.

Copper displaces lead from the lead(II) nitrate solution, resulting in copper(II) nitrate and solid lead production.

This reaction's chemical equation is Cu(s) + Pb(NO3)2(aq) Cu(NO3)2(aq) + Pb(s).

The equation's balance and the physical state symbols (s for solid and aq for aqueous solution) should be noted.

In the second scenario, adding a strip of solid lead metal to a beaker containing 0.050 M Cu(NO3)2 solution does not cause a chemical reaction.

Since lead ranks lower in the reactivity series than copper, it does not displace copper from the copper(II) nitrate solution. There is therefore no reaction and no chemical equation that can be written that is balanced.

To know more about "Chemical reaction" refer here:

https://brainly.com/question/713901#

#SPJ11

The pressure inside a container of gas increases if more gas is added to the container due to the increase in the number of molecules striking the walls of the container per unit time and the increase in the force of the collisions between the molecules and the walls of the container.

Pressure is defined as force per unit area and is usually measured in atmospheres (atm), millimeters of mercury (mmHg), or kilopascals (kPa).The molecules of gas in a container are in constant motion and collide with the walls of the container. When more gas is added to the container, the molecules have less space to move around and collide with the walls more frequently.

This leads to an increase in the number of collisions per unit time and therefore an increase in the force per unit area exerted on the walls of the container. This increase in force leads to an increase in pressure inside the container.In summary, the pressure inside a container of gas increases if more gas is added to the container due to an increase in the number of collisions and the force of the collisions between the molecules and the walls of the container.

Know more about  pressure   here:

https://brainly.com/question/24719118

#SPJ8

Answer:

Explanation:

the formula for Iron(I) nitride is  : Fe2N

the formula for tin(II) bromide ; SnBr₂

Answer:

Weather includes such conditions as air pressure, wind, temperature , and moisture in the air.

The value of Keq for this reaction is \(\bold{1.8 \times 10^-^5}\)

The correct option is (A).

Acetic acid is an organic compound also called ethanoic acid. It is a colorless liquid with a chemical formula   \((CH_3COOH)\).

It has antibacterial and antifungal properties.

When acetic acid is reacted with water, it completely dissolves in it.

Thus, the correct option is A, \(\bold{1.8 \times 10^-^5}\).

Learn more about acetic acid, here:

https://brainly.com/question/12924347

Convert the mass of anhydrate to moles: Mass of anhydrate / Molar mass anhydrate =120.4g / 120.4g/mol = 1 mole MgSO4.

One of a body's fundamental properties is its mass. In spite of having the same amount of matter in theory, different atoms and elementary particles have been found to have different masses.

In modern physics, there are a number of conceptually distinct but physically equivalent conceptions of mass. Experimentally, the body's resistance to acceleration (change in velocity) in the presence of a net force can be quantified as mass, which is the same as inertia. The mass of the object affects the gravitational pull it exerts on other bodies.

To know more about the mass, click the link given below:

https://brainly.com/question/19694949

#SPJ1

\(\qquad\qquad\huge\underline{{\sf Answer}}\)

Cations are ions that has a positive charge on it, and since it's a positive charge, it means that the ion has more protons than the number of electrons.

On the same contray, Anions are negatively charged particles having more electrons than protons in it, and hence bearing a negative charge.

property : non - alike ions attract each other by electrostatic force.

Answer:

Cations are positively-charged ions.

Anions are negatively-charged ions.

Answer:

Explanation:

To find the number of moles of a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2.50 × 10²¹ atoms of silicon

So we have

\(n = \frac{2.50 \times {10}^{21} }{6.02 \times {10}^{23} } \\ = 0.0041528239...\)

We have the final answer as

Hope this helps you

Answer:

6

Explanation:

Answer: 6

Explanation:

I just took this thang

The area of the oleic acid molecule is 6h².

The area of a given shape is the total space taken up by a place surface.

Area usually apply to shape or two dimensions of a solid object.

A cube is a three dimensional object that has six faces that which have equal areas.

The total area of a cube is calculate by adding the results of all the area of the six faces.

Total surface area of a cube = 6 * a²

Where a is the area of any of the six faces.

Given that oleic acid molecules are cubic in shape where a side of the cube is the height of the monolayer.

Let the height of the oleic acid be h

The area of a molecule of oleic will be obtained by multiplying the square of the height of the molecule by six.

Area of the oleic acid molecule 6 * h².

Learn more about area of cube at: https://brainly.com/question/410493

#SPJ1

Answer:

Molecules of H2O

Explanation:

Frost is condensed vapour and vapour is gaseous water. So, their particles are made up of same particles as water, i.e., H2O.