A car rental agency currently has 44 cars available, 28 of which have a GPS navigation system. One of the 44 cars is selected at random. Find the probability that this car a) has a GPS navigation system b) does not have a GPS navigation system

Answer:

d = 9.5× 10⁻⁴ Kg/cm³

Explanation:

Given data:

Length of cube = 1.02 cm

Mass of cube = 0.001012 Kg

Density of cube = ?

Solution:

The length , height and width of cube is always same. Thus the volume of cube is,

Volume = length × height× width

Volume = 1.02 cm × 1.02 cm × 1.02 cm

Volume = 1.06 cm³

Density of cube:

d = 0.001012 Kg /1.06 cm³

d = 9.5× 10⁻⁴ Kg/cm³

Answer:

kinetic energy

Explanation:

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Answer:

Entropy,mass and volume.... I think

Mass is the extensive property of a sample of aluminum. Therefore, option (A) is correct.

The extensive property can be described as a physical property of matter that changes with a change in the size and shape of the matter. Therefore, the extensive property of any substance varies directly with the mass.

Extensive properties are the value of the property of the system that must be equal to the sum of the values of different parts of the system. These properties depend on the amount of matter contained in the system.

Examples of Extensive properties are temperature, pressure, density, boiling point, etc. The ratio of the two extensive properties is an intensive property such as density.

The mass of a sample of aluminum is an example of extensive property as it depends on the amount of aluminum in the given sample. This property of the sample is proportional to the size of the system.

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Your question is incomplete, most probably the complete question was,

Which of the following is an extensive property of a sample of aluminum?

A) Mass

B) Temperature

C) Pressure

D) Density

It covers 6 elements, from boron to neon. Boron is in group 13, carbon in group 14, nitrogen in group 15, oxygen in group 16, fluorine in group 17 and neon in group 18. Subshell is being filled while moving across these elements is p subshell with maximum number of electrons this subshell can hold to 6 electrons

Different subshells hold a different maximum number of electrons. Any s subshell can hold up to 2 electrons; p subshell up to 6 electrons; d subshell up to 10; and f subshell up to 14.

The atomic number of boron is 5. Here is the electronic configuration:

B₅ = 1s² 2s² 2p¹

The atomic number of carbon is 6. Here is the electronic configuration:

C₆ = 1s² 2s² 2p²

The atomic number of nitrogen is 7. Here is the electronic configuration:

N₇ = 1s² 2s² 2p³

The atomic number of oxygen is 8. Here is the electronic configuration:

O₈ = 1s² 2s² 2p⁴

The atomic number of fluorine is 9. Here is the electronic configuration:

F₉ = 1s² 2s² 2p⁵

The atomic number of neon is 10. Here is the electronic configuration:

Ne₁₀ = 1s² 2s² 2p⁶

It can be seen that each electron configuration is embedded with a 2p subshell with maximum number of electrons this subshell can hold to 6 electrons.

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The pH scale ranges from 0 to 14, with values below 7 considered acidic, 7 being neutral, and values above 7 being alkaline. Hair and scalp have a slightly acidic pH, and using a pH-balanced shampoo helps maintain the natural balance.

The characteristic that identifies a pH-balanced shampoo is having a pH level close to the natural pH level of the hair and scalp, which is around 4.5 to 5.5. Therefore, a pH-balanced shampoo will have a pH level in the acidic to neutral range, typically between 4.5 and 5.5, to avoid causing damage or disrupting the natural pH balance of the hair and scalp.

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A pH-balanced shampoo should have a pH between 4.5 and 5.5, contain mild acids or bases, and help to keep the hair and scalp's natural pH level balanced.

A pH-balanced shampoo is important because it prevents the scalp from becoming too dry or too oily. It ensures that the hair cuticle is closed, reducing frizz and improving shine. Using a pH-balanced shampoo can also help maintain the effectiveness of other hair products.

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The property of benzene that is a result of delocalisation of electrons in the benzene ring is the stability of the benzene ring.

Benzene is a colorless, highly flammable liquid with a pleasant odor. It's an important starting material for a variety of chemical products, including plastics, resins, synthetic fibers, rubber additives, and dyes. Its molecular formula is C6H6, and its structure is a hexagonal ring of carbon atoms, with a hydrogen atom bonded to each carbon atom. Each carbon atom also has a delocalized pi electron that interacts with the pi electrons of the other carbon atoms in the ring.

Delocalization is a general term for describing the movement of electrons away from a single atom or a pair of atoms. When the pi electrons in a benzene ring are delocalized, they move freely around the ring, creating a cloud of electron density above and below the ring. Because the electrons are free to move around, they don't belong to any single carbon atom in the ring but instead belong to the entire ring. As a result of the delocalization of electrons in the benzene ring, it has a high degree of stability, making it a common feature in organic compounds.

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Explanation:

B. Recycles slowly

And it also depends on the organism

The percent yield shows the extent to which the reactants are converetd into products . The limiting reactant is used up in the reaction.

A limiting reactant is the reactant that is in the least amount in the system.  Now;

Number of moles of Fe =  12.21 g/56 g/mol = 0.22 moles

Number of moles of O2 = 13.54 g/32 g/mol = 0.42 moles

Balanced reaction equation;

3Fe(s) + 2 O2(g) = Fe3O4(s)

If 3 moles of Fe reacts with 2 mole of O2

0.22 moles of Fe reacts with  0.22 moles * 2 mole/3 moles = 0.15 moles

Hence, Fe is the limiting reactant

If 3 mole of Fe produces 1 mole of  Fe3O4(s)

 0.22 moles  of O2   produces   0.22 moles * 1 mole/3 moles of  Fe3O4(s) = 0.1073 moles

Mass of  Fe3O4(s) =0.1073 moles  * 232 g/mol =16.9 g

Number of moles of excess reactant = 0.42 moles - 0.15 moles = 0.27 moles

Mass of excess reactant = 0.27 moles * 32 g/mol = 8.64 g

percent yield = 15.88 g/16.9 g * 100/1

= 93.4%

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Answer:

the answer is D

Explanation:

i hope it's rite.

Answer:

B - Poor crop production

Explanation:

I just did the quiz on Edge 2021

Answer:

b

Explanation:

The true statements about the spacecraft’s journey are: The weight of the spacecraft keeps changing. The mass of the spacecraft remains the same.

Mass is simply defined as the quantity of matter present in an object. The mass of an object is constant irrespective of the location of the object.

Weight is simply defined as the gravitational pull on an object. The weight of an object varies from place to place due to gravity.

Relationship between mass and weight

Mass and weight are related according to the following equation

Weight (W) = mass (m) × Acceleration due to gravity (g)

W = mg

With the above information in mind, we can conclude that the true statements of the spacecraft journey are:

The weight of the spacecraft keeps changing.

The mass of the spacecraft remains the same.

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To produce one molecule of glucose, 6 molecules of carbon dioxide (\(CO_{2}\)), 18 molecules of adenosine triphosphate (ATP), and 12 molecules of nicotinamide adenine dinucleotide phosphate (NADPH) are required.

Glucose, a six-carbon sugar, is synthesized through the process of photosynthesis in plants. It involves the Calvin cycle, which incorporates carbon dioxide, ATP, and NADPH to produce glucose. For each molecule of glucose formed, 6 molecules of carbon dioxide are required.

The energy needed for glucose synthesis is provided by ATP, which is an energy-rich molecule. In the Calvin cycle, the synthesis of one glucose molecule requires 18 molecules of ATP.

NADPH, a coenzyme involved in energy transfer reactions, is required for the reduction of carbon dioxide during the Calvin cycle. In the process, 12 molecules of NADPH are utilized to produce one molecule of glucose. These components play crucial roles in capturing and storing energy, as well as providing carbon atoms for the formation of glucose, which serves as a vital energy source for organisms.

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Answer:
3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O

Explanation:

In this equation, copper (Cu) reacts with trioxonitrate(V) (HNO3) to produce copper(II) nitrate (Cu(NO3)2), nitrogen monoxide (NO), and water (H2O).

During the reaction, the copper atoms are oxidized by the nitrate ions in nitric acid to form copper(II) ions (Cu2+), while the nitrate ions are reduced to nitrogen monoxide (NO). The water molecules are produced as a byproduct of the reaction.

Overall, the reaction between copper and trioxonitrate(V) is a redox reaction, where oxidation and reduction occur simultaneously. This reaction is commonly used in the laboratory for the preparation of copper(II) nitrate.

58.44 g/mol. One mole of sodium chloride weighs 58.44 g. (6.02 x 1023 formulas).  To put it another way, it provides the grams of a substance per mole.

A molar mass A chemical compound's mass M is equal to the molecular weight (M) of the substance. MB = m/nB, where m is the total mass of a sample of a pure substance and nB is the amount of substance B expressed in moles, is the formula for this equation. Pure substance falls under the definition. You can find out how much a compound weighs in moles by looking at its molar mass. To put it another way, it provides the grams of a substance per mole.

58.44 g/mol

The mass of a mole of sodium chloride is 6.02 x 1023 formulae.

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The rf value for a spot in a chromatography experiment if the solvent moved 13.1 cm and the spot moved 9.5 cm from the origin is 0.73.

What is chromatography ?

Separating ingredients in a mixture using chromatography is a procedure. The mixture is dissolved in the mobile phase, which starts the process off, and then transports it through the stationary phase, which is the final phase.

What is experiment ?

A scientific experiment is a test carried out to ascertain what occurs to a subject under a given set of circumstances.

Therefore,  rf value for a spot in a chromatography experiment if the solvent moved 13.1 cm and the spot moved 9.5 cm from the origin is 0.73.

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According to the reaction, when 355 ml of 1.65 m Hydrochloric acid solution are combined with too much aluminum, 26.03 g of aluminum chloride is created.

An inorganic substance with the formula AlCl3 is aluminum chloride, also referred to as aluminum trichloride. It takes the form of [Al(H2O)6] hexahydrate. Aluminum chloride is ALCl3, which is composed of six water molecules. Aqueous hydrochloric acid, also referred to as muriatic acid, is a type of hydrochloric acid. It is a colourless solution with an overpowering odor. Strong acid is how it is categorized.

2 Al(s) + 6 HCl is the given reaction. ———-> 2 AlCl3 + 3H2

Using the provided data

The amount of HCl in moles is n= Volume * Concentration = 0.58575 mol (1.65 M * 355 ml)/1000 ml

based on the response,

It takes 6 mols of HCl. To neutralize 2 moles of aluminum, 0.58575 mol of hydrochloric acid must be used.

using the cross-multiplication method, 0.19525 moles are obtained by multiplying 0.58575% by 2/ 6.

Weight of the AlCl3 = 0.1952 moles * 133.340538 g/mol = 26.03 g

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To determine the limiting reactant, we need to compare the moles of each reactant and their stoichiometric coefficients in the balanced equation. The balanced equation for the reaction is:

C + SiO2 -> SiC + CO2

First, we convert the masses of carbon (C) and silicon dioxide (SiO2) to moles using their respective molar masses. The molar mass of carbon (C) is 12.01 g/mol, and the molar mass of silicon dioxide (SiO2) is 60.08 g/mol.

Moles of C = mass of C / molar mass of C = 2.50 g / 12.01 g/mol = 0.208 mol C

Moles of SiO2 = mass of SiO2 / molar mass of SiO2 = 2.50 g / 60.08 g/mol = 0.0416 mol SiO2

Next, we compare the moles of each reactant to their stoichiometric coefficients in the balanced equation:

From the balanced equation: 1 mol C reacts with 1 mol SiO2

Since the ratio of moles of C to moles of SiO2 is 0.208 mol C : 0.0416 mol SiO2, we can see that the mole ratio is 5:1. Therefore, for every 5 moles of carbon, 1 mole of SiO2 is required.

Since we have equal moles of carbon and silicon dioxide (0.208 mol C and 0.0416 mol SiO2), we can see that the limiting reactant is SiO2. It is the limiting reactant because there is not enough SiO2 to react completely with the available carbon.

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Answer:In the picture

Explanation: None

Answer:

The moles of potassium that you would need to prepare 1200 g of 5% potassium sulfate solution is 1.538 moles

Answer:

C

Explanation:

The AH value for the combustion of ethane, as represented by the given balanced chemical equation, is -1560.6 kJ/mol. The energy is absorbed during this reaction.

In the balanced chemical equation provided, 2 moles of ethane (C₂H6) react with 7 moles of oxygen gas (O2) to produce 4 moles of carbon dioxide (CO₂) and 6 moles of water vapor (H₂O). The AH value represents the change in enthalpy, or heat, during the reaction per mole of reactant.

To determine the AH value, we can look at the coefficients of the reactants and products in the balanced equation. In this case, 2 moles of ethane react to produce 4 moles of carbon dioxide and 6 moles of water vapor. The AH value is calculated per mole of reactant, so we can divide the AH value by the number of moles of ethane (2) to get the AH value per mole of ethane.

The given value of -84.7 kJ is the AH value per mole of ethane, so we need to multiply it by the number of moles of ethane in the balanced equation (2) to get the total AH value for the reaction. Therefore, the AH value is -84.7 kJ/mol × 2 mol = -169.4 kJ.

However, it's important to note that the given AH value (-84.7 kJ) appears to be incorrect in the question. The actual value for the combustion of ethane is around -1560.6 kJ/mol. This value represents the energy released or absorbed during the reaction. In this case, the negative sign indicates that energy is absorbed, meaning the reaction is endothermic.

In summary, the AH value for the combustion of ethane is -1560.6 kJ/mol, and the energy is absorbed during the reaction.

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Answer:

B) Kinetic

Explanation:

Kinetic Energy is energy relating to or resulting from motion. Therefore, the answer to this question is B.

Answer:

The answer is option B - Kinetic energy.

Explanation:

The Energy that a moving object has due to its motion is Kinetic Energy.

Answer:

2.9 * 10^23 atoms Au

Explanation:

(95 g Au) * (1 mol Au/196.96657) * (6.02 * 10^23 atoms Au / 1 Mol Au)

2.9 * 10^23 atoms Au

Explanation:

The Diatomic molecules include, Hydrogen, Oxygen, Fluorine, Bromine, Iodine, Nitrogen, and Chlorine. A way to remember them is HOFBRINCL which has the symbols of all Diatomic molecules.

The reaction will shift towards the products.

The focus will move to the products. This means that the reaction will favor the forward reaction, which means that it will favor the creation of CH4, and that the forward reaction rate will be greater than the reverse reaction rate.

The equilibrium constant expression is a mathematical formula that shows how product concentrations fluctuate with reactant concentrations. If K is greater than one, the products of the reaction are favored. If K is less than one, the reactants in the reaction are favored.

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Answer:

Explanation:

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Answer:

Answer:

Is a atom that has to much nuclear energy. Which makes it unstable