Why is ethane rarely used as a fuel?

Answer:

37.84 Liters

Explanation:

(see picture)

Answer:

0.2m/s

Explanation:

speed =d/t

10/55= 0.181

approximately 0.2m/s

Answer: it is b.

Explanation: Average Speed = Total Distance  

                                                      Total Time

= 10m/5s

=2m/s

Hope this helps!!

Answer:

The “I” and “II” in copper oxide represents the number of electrons that the metal has provided when copper oxide is brought into contact with metal. Some uses for copper oxide are: Building copper-based structures. These structures gradually change color due to oxidation.

36368.16J heat is required to convert 12. 0 g of ice at -10. 0 ºc to steam at 100. 0 ºc.

What is steam ?

The online store Steam is where you can buy, play, make, and discuss PC games. It is run by the game developer Valve. The platform contains thousands of games from both well-known and independent game companies, as well as DLC and user-generated features known as "mods." Steam was initially released for the macOS operating system in 2010 and the Linux operating system in 2012. In 2012, the first iOS and Android mobile apps to access online Steam features were made available. The portal also provides additional digital products like productivity tools, game soundtracks, films, and VR headsets like the Valve Index as well as Valve gaming hardware. According to IHS Screen Digest, the service held an estimated 75% of the market share for digital PC game distribution in 2013.

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The percentage of offspring that could be born short (tt) and light-skinned (bb) from this cross is 6.25%.

To further explain, when a tall (Tt) dark-skinned person (Bb) is crossed with another tall (Tt) dark-skinned person (Bb), we can use a Punnett square to determine the possible outcomes. Each parent can contribute one of two alleles for each trait to their offspring, so there are four possible combinations for each trait. For height, the possible combinations are TT, Tt, tT, and tt. For skin color, the possible combinations are BB, Bb, bB, and bb.

By calculating the probability of each outcome, we find that:
- TT or Tt (tall): 75%
- tt (short): 25%
- BB or Bb (dark-skinned): 75%
- bb (light-skinned): 25%

To find the probability of having both short (tt) and light-skinned (bb) offspring, we multiply the probabilities of the individual traits: 25% (short) x 25% (light-skinned) = 6.25%. Therefore, the chance of having short (tt) and light-skinned (bb) offspring from this cross is 6.25%.

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The humanistic perspective represents a reaction to both the (psychodynamic) and the (behaviorist) perspectives.

The humanistic perspective emerged as a response to the dominant psychodynamic and behaviorist approaches in psychology. The psychodynamic perspective, developed by Sigmund Freud, emphasized the role of unconscious desires and conflicts in shaping human behavior. It focused on the significance of early childhood experiences and the influence of the unconscious mind on personality development. On the other hand, the behaviorist perspective, championed by figures like B.F. Skinner, emphasized the role of external stimuli and reinforcement in shaping behavior. It focused on observable behaviors and rejected the notion of the unconscious mind.

In contrast to these perspectives, the humanistic approach emphasized the unique qualities of human beings, such as free will, personal growth, and self-actualization. It sought to understand individuals as whole persons rather than reducing them to unconscious drives or observable behaviors. Humanistic psychologists, such as Abraham Maslow and Carl Rogers, emphasized the importance of subjective experiences, self-perception, and personal choice. They believed that individuals have an innate drive towards personal growth and self-fulfillment.

The humanistic perspective offered a more optimistic and human-centered view of psychology, focusing on the positive aspects of human nature and the potential for personal growth and self-improvement. It emphasized the importance of individual subjective experiences, personal agency, and the pursuit of meaningful goals. By reacting against the deterministic and reductionistic views of the psychodynamic and behaviorist perspectives, the humanistic approach provided a holistic and person-centered understanding of human behavior and psychological well-being.

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The humanistic perspective in psychology emerged as a reaction to both the behaviorism and psychoanalytic perspectives. Unlike these deterministic theories, humanistic psychology, championed by individuals like Abraham Maslow and Carl Rogers, views humans as inherently good and having free will, focusing on their potential for growth and self-fulfillment.

The humanistic perspective in psychology represents a reaction to both the behaviorism and the psychoanalytic perspectives. Behaviorism asserts that all human behavior is strictly influenced by genetics and environment, while psychoanalytic theory emphasizes the role of unconscious processes and unresolved past conflicts. These deterministic viewpoints led to dissatisfaction among many psychologists, fostering the development of humanistic psychology.

Humanistic psychology, associated with psychologists like Abraham Maslow and Carl Rogers, emphasizes the potential of all people for good, a viewpoint which advocates that humans have free will and the capacity for self-fulfillment. It hence proposes an optimistic perspective of human nature, focusing on the growth potential in individuals and their innate capacity for self-determination and self-actualization.

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HCl is an acid, \(C_5H_5N\) is a base, Cl is an acid, and \(HC_5H_5N\) is an acid.

Acid-base reactions are the chemical reactions that occur when acids and bases are mixed together.

The reaction of acid and base is considered a neutralization reaction. In this chemical reaction, the acid reacts with a base to form salt and water.

Hence, HCl is an acid, \(C_5H_5N\) is a base, Cl is an acid, and \(HC_5H_5N\) is an acid.

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Answer:

The speed of sound in air is 333.33 m/s

Explanation:

The parameters given are the time it takes for the sound to male it to the cliff and back = 30 times in 9 seconds

Distance to the cliff = 50 meters

Therefore, the sound covers a distance of 30 × 100 = 3000 meters in 9 seconds

Which give the speed of sound in air using the formula for speed = Distance/Time

Therefore, the speed of sound in air = 3000/9 = 333.33 m/s.

If the natural abundance of chlorine-35 is 75.8% and that of chlorine-37 is 24.2%, then the average atomic mass of chlorine will be 35.44 amu.

Chlorine exists in two isomeric forms which are the chlorine-35 and chlorine-37. The atomic mass of the chlorine elements is basically the average atomic mass of its isotopes depending upon their abundance in nature.

The atomic mass of chlorine-35 is 34.97amu and a natural abundance equal to 75.8 %. The atomic mass of chlorine-37 is equal to 36.97 amu with an abundance of 24.2%.

To calculate the average atomic mass of chlorine,

The abundance of chlorine-35 = 75.8% = 0.758

The abundance of chlorine-37 = 24.2% = 0.242

⇒ Average atomic mass = 34.97 × 0.758 + 36.97 × 0.242

⇒ Average atomic mass = 26.50 + 8.94

⇒ Average atomic mass = 35.44 amu  

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The galaxy is defined as a system of stars, gases, dust, and other matter that orbits a common center of gravity. Thus the correct option is C.

A galaxy is generally defined as the massive collection of billions of stars with their solar systems, gas and dust all guarded together by the center of gravity.

It is in the planet earth which is the part of our solar system we all live. The solar system is found to be the part of the galaxy called Milky Way. Our milky way galaxy also contains a supermassive black hole in the center.

There are several types of galaxies which are present in different shapes. Some of them are found to be in spiral shape and some other galaxies are seen as oval shaped and they are known as elliptical galaxies.

There are also some galaxies with irregular shapes and they are seen as blobs. It is the stars that are present inside each galaxies produces light and this massive system comprising of stars, dust gases and the matter are held by the gravity.

Thus the correct option is C- galaxy.

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The value of E° for the reaction: Ti²⁺(aq) + Zn(s) → Ti(s) + Zn²⁺(aq) is -0.87 V, using the given standard reduction potentials.

We know that E° for Zn²⁺(aq) = -0.76 V and E° for Ti²⁺(aq) = -1.63 V. Now, to determine E° for the reaction: Ti²⁺(aq) + Zn(s) → Ti(s) + Zn²⁺(aq), using the given standard reduction potentials we need to:-

1. Identify the oxidation and reduction half-reactions:-
  Oxidation: Zn(s) → Zn²⁺(aq) + 2e⁻ (Zn loses electrons)
  Reduction: Ti²⁺(aq) + 2e⁻ → Ti(s) (Ti gains electrons)

2. Use the given standard reduction potentials to find the corresponding standard oxidation potentials:-
  E° for Zn(s) → Zn²⁺(aq) = -(-0.76 V) = 0.76 V
  E° for Ti²⁺(aq) + 2e⁻ → Ti(s) = -1.63 V

3. Add the standard oxidation and reduction potentials to find the overall E° for the reaction:-
  E° = E°(oxidation) + E°(reduction)
  E° = 0.76 V + (-1.63 V)
  E° = -0.87 V

Therefore, the E° for the reaction Ti²⁺(aq) + Zn(s) → Ti(s) + Zn²⁺(aq) is -0.87 V.

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Answer:

2C8H18 + 25O2 → 16CO2 + 18H2O

Explanation:

Understanding physical properties of matter is essential in everyday life for a variety of purposes, from cooking to choosing materials.

Knowledge of physical properties of matter is extremely important in everyday life as it helps us understand the nature of substances we come into contact with. One example is the use of boiling points in cooking. Different substances have different boiling points which determine the temperature at which they boil. This information is crucial in determining cooking times and ensuring that food is cooked properly.

For instance, water boils at 100 degrees Celsius, while sugar syrup boils at a much higher temperature. If the wrong temperature is used, food may be undercooked or overcooked, leading to undesired outcomes. Knowledge of physical properties also helps in choosing the right materials for different purposes, such as choosing heat-resistant materials for cooking.

In conclusion, understanding physical properties of matter is essential in everyday life for a variety of purposes, from cooking to choosing materials.

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Using the equation H=cpmT and the water specific heat, the amount of heat received is determined. 4. At 100oC, water vaporizes into vapour.

The fact that it requires a lot of energy to boil water is one of its most important characteristics. To be precise, one calorie of heat must be absorbed by 4,184 Joules of water for one degree Celsius of temperature rise. To provide some context, 1 kilogram of copper can be heated to 1°C with just 385 Joules of heat.

Water takes energy during the freezing, evaporation, and sublimation processes. The water molecules alter their bonding structure and transition to a higher energy state as a result of the energy received. This energy must be provided by the atmosphere in the Earth system.

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The mass of the iron (Fe) sample that contains the same number of moles as a 14.0 g sample of Ar is 55.8 g.

To solve this problem, we must first determine the number of moles of Ar in the given 14.0 g sample. Ar's molar mass is 39.95 g/mol, according to the periodic table. Therefore, 14.0 g of Ar (1 mol Ar/39.95 g) = 0.350 mol Ar.

So the sample's Fe mass, which contains the same number of moles, is determined using the molar mass of iron (Fe) from the periodic table. Iron's molar mass is 55.8 g/mol. Therefore, the mass of the Fe sample is as follows:0.350 mol Fe x 55.8 g/mol = 19.53 g Fe. So, there are 19.53 grams of Fe in a sample of Fe that contains the same number of moles as a 14.0 g sample of Ar.

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Answer:

An atom has a nucleus, made up protons and neutrons, which is surrounded by a cloud of electrons.

Explanation:

An atom is the smallest indivisible part of any element that takes place in a chemical reactions.

These are the fundamental building blocks of every element and even compounds.

Both protons and neutrons are located within the tiny space called nucleus at the center of an atom.

Electrons moves round in orbitals at the spaces outside of the nucleus.

Answer:

A polar covalent bond will have the electrons shifted more towards one side or the other; a nonpolar bond will have evenly distributed electrons.

Explanation:

  The basis for a polar bond is that the electrons are shared unevenly. Some elements are more electronegative than others; that is, they pull harder on the electrons and tend to have more electrons around them. Following the periodic trends, Fluorine is the most electronegative element, so it will likely have the most dense area of electrons in a molecule. All this means that in a polar molecule, the electrons will be spread out unevenly along the lengths of the bonds as some elements will pull on them more than others will.

  Nonpolar molecules do not have to worry about differences in electronegativity, and so the electron density will be pretty evenly distributed along the entire molecule.

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The black deposit formed on the magnesium wire indicates a displacement reaction has occurred, in which the magnesium has displaced the lead from the lead (II) nitrate solution. Therefore, it can be concluded that magnesium is more reactive than lead.

Based on your observation of a black deposit forming on the magnesium wire when dipped into a solution of lead (II) nitrate, we can conclude that a chemical reaction has occurred between magnesium and lead (II) nitrate. This reaction involves a displacement process, where magnesium, being more reactive, displaces lead from the solution, resulting in the formation of a black deposit of lead and the formation of magnesium nitrate in solution.

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The most likely reason why the potato chunks gained mass is that water entered the potato cells.

The process of Osmosis allows water to pass through the semi-permeable membrane of potato cells.

This happens when the potato cells have less water than the material around them which then leads to water entering the cells to balance the water concentration.

The potato cells will expand and have more mass as a result.

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Answer:

The periodic table will say it underneath the symbol.

Explanation:

I don't know how else to describe it but I hope this helps. :)

Answer:

Because of the gravity of the Earth

To solve this question we will assume that the moles of gas do not change and that the gas behaves like an ideal gas.

For an ideal gas we have that its behavior will be according to the following equation:

Where,

P is the pressure of the gas, in atm

V is the volume of the gas, in liters

n are the moles of the gas

T is the temperature of the gas, in Kelvin

R is a constant, 0.08206 atm.L/mol.K

We have for this gas two states, an initial state (1) and a final state (2), so for each state we can apply the ideal gas law, we will have:

Initial state:

Final state:

Since nR are constants, we can equate both equations:

For each state the conditions of pressure, volume and temperature will be:

P1=1.00atm

V1=195mL = 0.195L

T1=20°c = 293.15K

P2= 600mmHg=0.79atm

T2=60°C=333.15K

V2=Unknown

We clear V2 and replace the known data:

Answer: The final volume of the gas will be 280mL

Answer:

Sr(C₂H₃O₂)₂(aq) ----------> Sr^2+(aq) + 2C₂H₃O₂^-(aq)

Explanation:

When an ionic compound is dissolved in water, ions are formed. The number of ions formed us proportional to the number of ions that combine to form the compound.

For Sr(C₂H₃O₂)₂, two ions make up the compound; Sr^2+ and C₂H₃O₂^-. The dissociation of the compound in water yields;

Sr(C₂H₃O₂)₂(aq) ----------> Sr^2+(aq) + 2C₂H₃O₂^-(aq)

Hence two ions are formed.

According to the information of the graph we can infer that if the water were cooled to 5°C the reaction time would be close to 30 seconds.

To establish what would the reaction time be if the water were cooled to 5°C we have to analyze the information of the graph specially the trend. In this case, we have to take into account where are located the point that relate time and temperature.

In this case, the trend is more time with less temperature. So if the water were colled to 5°C, the time would be close to 30 seconds.

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Answer:

20

Explanation:

Answer:

1.09 mL

Explanation:

Density is a measure of a substance's mass over its volume.

d = m/v

We can rearrange the equation to solve for volume, using algebra.

v = d/m

Therefore v = 6.35/5.80 = 1.09 mL

ANSWER

The final pressure of the gas is 342.31 torr

EXPLANATION

Given that;

The initial pressure of the gas is 767.7 torr

The initial volume of the container is 58.1 mL

The final volume of the container is 130.3mL

Follow the steps below to find the final pressure of the gas

In the given data, the temperature of the gas is fixed, therefore, we can apply Boyle's law to find the volume

Step 1; States Boyle's law

Boyle's law states that the volume of a given mass is inversely proportional to its applied pressure provided that the temperature of the gas remains constant.

Mathematically

Step 2; Substitute the given data into the above formula

Therefore, the final pressure of the gas is 342.31 torr

we are given the mass of NH4Br as 14.g and the volume of the solution as 150mL

we are require to find the molarity of the solution

we first need to fin the mols of NH4Br in 14.g we can do this using the formula

n = m/M

where n is the molsm m is the mass and M is the molar mass of NH4Br

so;

n = 14.0/97.94

= 0.143 mols

now that we have the mols of NH4Br, we can find the molarity by simply using the formula

C = n/V

where

C = Concentration or molarity

n = number of mols

v = volume of the solution in L

therefore;

C = 0.143/ 0.150

= 0.953 M

therefore b is the correct option

Answer:

Ionization energy

Explanation:

Ionization energy can be defined as the energy needed to remove an electron from the outermost she'll.