The bond line formula,
represents the molecular formula
B
A
C8H18
C8H15

Taking into account the reaction stoichiometry, 5 moles of CO₂ can be formed from 1.25 mol butane and excess oxygen.

In first place, the balanced reaction is:

2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 2 moles of C₄H₁₀ form 8 moles of CO₂, 1.25 moles of C₄H₁₀ form how many moles of CO₂?

[tex]moles of CO_{2} =\frac{1.25 moles of C_{4} H_{10}x8 moles of CO_{2}}{2 moles of C_{4} H_{10}}[/tex]

moles of CO₂= 5 moles

Then, 5 moles of CO₂ can be formed from 1.25 mol butane and excess oxygen.

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Answer:

to build a house you need land and people

Explanation:

The properties of ammonium lauryl sulfate that make it a feasible surfactant is its solubility and being able to disrupt hydrogen bonding in water.

They are used as detergents and emulsifiers through to their ability to reduce surface tension between substances.

Hydrogen bonds are the primary contributor to the high surface tension of water which is why their ability to disrupt it makes it to be a good surfactant.

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Explanation:

Electron is negative in charge

Proton is positive in charge

Neutron has no charge

Take the given weight (28.2 g) and divide it by the atomic weight of sodium.

The atomic mass can be found under the element symbol on the periodic table. The atomic mass for sodium is 22.98 g.

28.2/22.98 = 1.23 moles

Therefore, there are 1.23 moles in sodium.

Answer: Ti and Ni

Explanation:

Answer:

5.8

Explanation:

Answer:

D. is the Answer. ✅

Explanation:

The Moon is 1/4 the size of Earth.

A is not right because Moon isn't a dwarf planet.❌

B is not right because the Moon isn't 1/2 the size of Earth.❌

C is not right because the Moon is no where near as large as Earth.❌

Answer:

D

Explanation:

The moon is not as nearly as large as the Earth so C is out

The diameter of the moon is not about 1/2 of Earth so B would cancel out

The moon is not a dwarf planet so A would cancel out

D is the answer. Hope this helps!

Taking into account the definition of calorimetry, the energy released is 2283.93 J.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

In this way, between heat and temperature there is a direct proportional relationship. the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where:

In this case, you know:

Replacing in the definition of calorimetry:

Q = 0.3845 [tex]\frac{J}{gC}[/tex]× 26.4 g× (-225 C)

Solving:

Q= -2283.93 J

Finally, the energy released is 2283.93 J.

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Answer:

The first one is on google

Explanation:

Answer:

m = 19 grams

Explanation:

Given that,

No. of moles, n = 0.8

The molar mass of magnesium, M = 24.305 u

We need to find the mass of 0.80 moles of Mg. We know that given mass to the molar mass is equal to no of moles. Let the mass is m. So,

[tex]n=\dfrac{m}{M}\\\\m=n\times M\\\\m=0.8\times 24.305 \\\\m=19.444\ \text{grams}[/tex]

or

m = 19 grams

So, the mass of 0.8 moles of Mg is 19 grams.

Answer:

See explanation below

Explanation:

In this case, you just need to apply the following expression:

Pc = Patm + h + d1/d2

Where:

Pc: Pressure of container

Patm: Atmospherical pressure

h: height of the arm of manometer

d1: density of gas

d2: density of mercury

You are not providing the density of the gas which is filled the container, so, let's assume we are filling this with hexane (d = 0.65 g/mL)

We have all in mm Hg so we just need to apply the above expression:

Pc = 757.1 + 203.3 * (0.65/13.546)

Pc = 757.1 + 9.7553

Pc = 766.8553 mmHg

Answer:

A. 2,3-dimethylpentane

Explanation:

edge 2022

Hydrocarbons are the simplest compound containing carbon and hydrogen in their molecular structure. 2, 3 dimethyl pentane is correct.

Hydrocarbons are the simplest compound containing carbon and hydrogen in their molecular structure. There are four types of hydrocarbon as follows

Alkanes, alkenes, alkynes and aromatic hydrocarbons. Alkane contai carbon carbon single bond in their structure .Alkene containing carbon carbon double bond in their structure while alkynes contain carbon carbon triple bond in their structure.

Aromatic hydrocarbon contain benzene ring in their structure. Benzene is the example of aromatic hydrocarbon. Aromatic hydrocarbons are used as paint removal and are also used as a solvents.

Thus, 2, 3 dimethyl pentane is correct . It is a hydrocarbon containing carbon and hydrogen in their structure.

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an explanation of why particular events happen in the natural world

Answer:

a) 2KOH -> K2O + H20

Explanation:

The second one I dont know. but for the 1st part I'm sure 100%

Answer:

0.028%

Explanation:

From the question given above, the following data were obtained:

Accepted value = 4.6026 g

Measured value = 4.6013 g.

Percentage error =..?

Thus, we can obtain the percentage error in the student's reading as follow:

Percentage error = |measured value – accepted value|/accepted value × 100

Percentage error = |4.6013 – 4.6026| / 4.6026 × 100

Percentage error = 0.0013 / 4.6026 × 100

Percentage error = 0.13/4.6026

Percentage error = 0.028%

Therefore, the percentage error in the student's reading is 0.028%

According to the forces of attraction, to  “see” the spaces in matter, add one cup of alcohol.The total volume is less than two cups, since alcohol has a lot of spaces   between molecules, where water molecules can fill.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

The theory of Biological Evolution makes two very bold claims about living creatures: First: All living things on earth are related. They evolved from a common ancestor. Second: The evolution of living things is powered by natural processes. Things which can be studied and understood

Explanation:

Answer:

Photosynthesis !

Explanation:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Based on the data provided, the electric circuit is completed when the key is closed.

An electric circuit is a complete path through which electric current flows

An electric circuit can either be:

An electric circuit consists of :

Therefore, an electric circuit is completed when all the components are connected and the key closed.

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Answer:

Explanation: HAVE A GREAT DAY EVERYONE <3

Answer:

C8H18

Explanation:

The end carbons have 3 hydrogen atoms each and the ones in the middle have 1 hydrogen atom each which gives. (3 x 5) + (1 x 3) = 18 hydrogen atoms

Answer:

4. The question needs to focus more on a relationship instead of just numbers.

Explanation:

One of the characteristic of a good research questions that the answer to that question should be able to be used to make a certain decision. Without this, the question would be considered as useless.

The answer to the question "How many alligators live in the Everglades National Park?"  will not provide you with any useful information. Only non-useful fact. We need to make a little adjustment to make the answer becomes useful.

For example,  Let's say that we alter the question to;

"How littering contribute to the number of Alligators that live in the Everglades National Park?'

The answer to that question will provide us with something that we can use to make a decision. Let's say we find out that littering lead to decreasing number of alligators. We can use this data to convince the legislators to increase the budget to clean up the national park.

Explanation:

What is the best method for separating food dyes

Answer:

Ionic

Covalent

ionic.............

Answer:

explanation

Explanation:

Magnesium-

a. Solid

b. Metal

c. Natural

d. Mg

e. Alkaline earth metals

Ill answer the rest if you can mark brainliest

Answer:

You would weigh less on Uranus than on Earth because Uranus is far less mass-ive and dense than the Earth. This means that there is less gravity. Therefore, you would weigh less.

Explanation:

Even though Uranus is bigger, it is less massive; that is, there is less mass that makes up the planet. The volume of the planet might be larger, but the actual amount of mass isn't.

By the way, you couldn't stand on Uranus. It's made of gas!

Answer:

i think its B

Explanation:

When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well. This makes them bump into more nearby air molecules. This “chain reaction” movement, called sound waves, keeps going until the molecules run out of energy

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 95.8mL

density = 13.6g/mL

We have

mass = 13.6 × 95.8 = 1302.88

We have the final answer as

Hope this helps you

The new temperature of the balloon if the volume is decreased to the given amount is 338.5K.

Charles's law states  that the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex]

Given the data in the question;

Final Temperature; [tex]T_2 = \ ?[/tex]

To determine the new temperature as the volume is decrease, we substitute our given values into the expression above.

[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}\\\\V_1T_2 = V_2T_1\\\\261L * T_2 = 176L * 502K\\\\261L * T_2 = 88352L.K\\\\T_2 = \frac{88352L.K}{261L}\\ \\T_2 = 338.5K[/tex]

Therefore, the new temperature of the balloon if the volume is decreased to the given amount is 338.5K.

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