the manager of a bookstore uses the equation s = p - 3.5 to find the price a student pays for books



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Answer:

So, higher electronegativity helps atoms take more control over shared electrons creating partial negative regions and partial positive regions which result in dipoles that cause polarity. The molecule's polarity will be determined on the negative and positive regions on the outer atoms in the molecule

Answer:    1.7x10^-5

Explanation:

pH + pOH = 14

14 - pH = pOH

14 - 9.23 = 4.77

pOH =4.77

[OH-] = 10^-pOH

         = 10^-4.77

         = 1.698243x10^-5

         = 1.7x10^-5

Answer:

three types of stimuli consists of

Mechanical,

thermal,

and chemical.

Explanation:

I really hope this helps have an amazing day, dont forget YOU ARE WORTH IT

Answer:

coz would be equal so you would need co3 instead

Explanation:

Answer:

Explanation:

1. Shift towards products

- Decrease in no. of cars

- Decrease in no. of farms

2. Shift towards reactants

- Decrease in shellfish

- Loss of trees

- Increase in earth's temperature

Answer:

pinto beans!!

Explanation:

correct on edge

Answer: I believe it’s c

Explanation:

Because during fission the atom often splits into 2+

Answer: A) years on Earth are regular periods of three hundred sixty five days each

The criticism of the given idea is that there are  four seasons on Earth only because Earth is tilted at its axis and it goes around the sun.

A season is a division of the year based on changes in weather, ecology, and the number of daylight hours in a given region. On Earth, seasons are the result of the axial parallelism of Earth's tilted orbit around the Sun. In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface, variations of which may cause animals to undergo hibernation or to migrate, and plants to be dormant.

The Northern Hemisphere experiences most direct sunlight during May, June, and July, as the hemisphere faces the Sun. The same is true of the Southern Hemisphere in November, December, and January. It is Earth's axial tilt that causes the Sun to be higher in the sky during the summer months, which increases the solar flux.

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Answer:

Due to repulsion.

Explanation:

Repulsion among electrons is responsible for fly off the pie pans from the Van de Graaff generator. When the globe of the generator charges up, the charge will move to the top part of the pie tin. The top region of pie tin accumulates charge and since it is not fixed at one place like upper half of the globe itself, it will be repelled by electrostatic forces between electrons that leads to fly off so we can say that similar charge of electrons is responsible for this fly off.

Answer: B and E

Explanation:

The chemical reactions are all around us. Here for the given reaction the tablet completely disappeared and evidence of a chemical reaction includes the production of something new: a gas. The correct options are A and E.

A chemical reaction is defined as the reaction in which the bonds are broken within the reactant molecules and the new bonds are formed within the product molecules. In a chemical reaction the compounds interact to form new substances called products.

In a chemical reaction, a chemical change must occur which is generally observed with precipitation, heat formation, etc.

Thus the correct statements are options A and E.

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Answer:

Existence

Explanation:

Energy is required for anything to occur, without it there would be no 'causality' for things to change from one moment to the next.

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Answer:expert

Explanation:

Answer:

Is the balanced equations .

Answer:

3.2M HCl Solution

Explanation:

Molarity = moles of solute / volume of solution expressed in liters

moles of solute = 0.80 moles HCl

volume of solution = 250 ml = 0.250 Liter

Molarity (M) = 0.80 moles HCl / 0.250 Liters = 3.2M HCl Solution

Answer:

190k 100 on the test

Explanation:

Answer:

force ε: the increase in potential energy per unit charge provided by the chemical reactions in the battery. And the voltage difference across the light bulb is: ∆V = I R = (0.06 A)(20 Ω) = 1.2 V ▪If we measure the voltage difference across the battery or the light bulb, we will get 1.2 V.

Explanation:

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Answer:

Violet is scattered most by Earth's atmosphere, but the blue cones in our eyes aren't as sensitive to it. While our red cones aren't good at seeing blue or violet light, they are a bit more sensitive to violet than our green cones.

Explanation:

Answer:

11.0 dm³

Explanation:

From the question,

Applying

PV= nRT............... Equation 1

Where P = pressure of oxygen gas, V = volume of oxygen gas, n = number of moles of oxygen, R = molar constant, T = Temperature.

make V the subeject of the equation

V = nRT/P............. Equation 2

But,

Number of mole (n) = Mass of oxygen(m)/Molar mass of oxygen(m')

n = m/m'....................... Equation 3

Substitute equation 3 into equation 2

V = mRT/Pm'............. Equation 4

Given: T = 28°C = (28+273) = 301 K, P = 0.998 torr = (0.998×0.00131579) = 1.3132 atm, m = 18.4 g

Constant: R = 0.082 atm.dm³/K.mol, m' = 32 g/mol.

Substitute these values into equation 4

V = (301×18.4×0.082)/(32×1.3132)

V = 454.1488/42.0224

V = 10.81 dm³

V = 11.0 dm³

Answer:

b the delocalized

Explanation:

it could be the right answer

Answer: Hmmmmm that's crazy....

There are a couple of equations one could use for this type of problem, but I find the following to be the easiest to use and to understand.

Fraction remaining (FR) = 0.5n

n = number of half lives that have elapsed

In this problem, we need to find n and are given the FR, which is 1.56% or 0.0156 (as a fraction).

0.0156 = 0.5n

log 0.0156 = n log 0.5

-1.81 = -0.301 n

n = 6.0 half lives have elapsed

Explanation:

Just wanted to help. Hopefully it's correct wouldn't want to waster your time ;)

Answer:

The lung

Explanation:

The model of the respiratory system made by Megan consists of two balloons. The first balloon stretched across the bottom of the bottle represents the diaphragm which contracts and relaxes to allow air in and out of the lungs. The balloon inside the bottle represents one lung.

Breathing in causes the balloon inside the bottle to be filled with air. This is preceded by the expansion of the diaphragm which makes the lungs to be filled with air. Breathing out causes a contraction of the diaphragm thus making the lungs to let out air.

Answer:

You're Lungs

Explanation:

When you breathe in, air flows into your lungs. When you breathe out, air flows out of your lungs. The balloon inside the bottle is like one of your lungs.

Answer:

Milk, cream, milk solids, sugars, modifying agents and flavourings are blended together in stainless steel vats.

The mix is homogenised to create a consistent texture.

The mix is pasteurised by heating at 82-85°C for 15 seconds then cooled to destroy bacteria.

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Answer:

HOPE I HELPED!

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Matter is composed of tiny particles called _Atoms and molecules_.

What is the difference between states of matter and phases of matter? -The difference between  states of matter and phases of matter is that the state of matter is the state of a particular compound in a physical system whereas phase is a set of states within such a system.

Solid: The solid state is one of the fundamental states of matter. Solids differ from liquids and gases by the characteristic of rigidity.

Liquid: The molecules in a liquid are closely packed due to weak intermolecular forces. These forces are weaker than solids but stronger than that of gases.

Gas: Molecules floating all over the place

What causes matter to change states? - Changing states of matter occur when matter loses or absorbs energy.

What is temperature? - The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

What instrument is used to measure temperature? - Thermometers

What happens when two substances of different temperatures come in contact with each other? - When two substances having different temperatures are introduced or kept together, heat energy flows from a substance at higher temperature to a substance at lower temperature.

What happens when a substance moves below its freezing point? - Evaporation can take place below the boiling point of a substance.

What happens when it moves above its boiling point? - Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point.

A change of state from solid to liquid is called _melting___.

What is the difference between vaporization and evaporation? - Vaporization is the process of conversion of solid or liquid into gaseous form while evaporation is the change of a liquid into gaseous form.

What is an example of sublimation? - Vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature.

What is an example of condensation? - Having a cold soda on a hot day, the can "sweats."

During a phase change, the temperature remains __constant__. After the change of state occurs, the temperature _can rise again_.

Describe the three methods of thermal energy transfer:

Conduction: For conduction to take place between two objects, they must be touching each other.

Convection: The circulatory motion that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity

Radiation: Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.

What are electromagnetic waves? - Composition of oscillating electric and magnetic fields.

What are some examples of conductors and insulators? - Many metals, such as copper, iron and steel, are good electrical conductors. That is why the parts of electrical objects that need to let electricity pass through are always made of metal.

What are the characteristics of conductors and insulators? -  

An electrical insulator is a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons whose internal electric charges do not flow freely; very little electric current will flow through it under the influence.  

In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electrical current) in one or more directions.

How does thermal energy affect different materials? - Thermal energy affects different materials by the movement of the tiny particles, which transfers from one object to another, aka heat.

Explanation:

Answer:

Explanation:

The final pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the final pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

98 kPa = 98,000 Pa

We have

[tex]P_2 = \frac{98000 \times 77.4}{60} = \frac{7585200}{60} \\ = 126420[/tex]

We have the final answer as

Hope this helps you

Answer:

scientists are uncertain of how long the resources will last.

Explanation:

It is hard to estimate how long certain natural resources will last because they are dependent upon the rate of consumption and other factors. There are many fields of studies going into alternative energy. Since the technology needed for some of these ideas will take time to be developed, alternative sources of energy must be found before the resources we already have run out.

Answer: A. scientists are uncertain of how long the resources will last.

Explanation:

We are looking into many other types such as: Solar, Nuclear, Water, Etc.

Answer:

when they have satisfied the octet rule naturally or through bonding to obtain full valence shells

Explanation:

Generally, most atoms of an element are unstable because they have a void in their electron shell to fill, hence, they need to react with other elements to fulfil this task of octet.

Octet rule states that atoms of elements engage in reactions to form compounds so they can have eight (8) valence electrons in their shell. Noble gases e.g argon, neon etc. are elements that have naturally satisfied this octet rule by possession of 8 valence electrons in their shell. Other elements that do not have this naturally becomes reactive and enter bonding with other atoms to obtain full valence shells.

Answer:

Instantaneous speed is the speed of an object at a specific moment in time