Define Magnetic force and Magnetic field

Answer:

La configuración electrónica del cloruro es 1s2 2s2 2p6 3s2 3p6.

Explanation:

Answer:

See below.

Explanation:

The children feel cold on touching the ice block as the temperature of it is much less than body temperature.

Answer:

1802

Explanation:

 Humphry Davy invented the first electric light

Answer:

1806

Explanation:

The very first light bulb was not invented by Thomas Edison, but by British inventor Humphry Davy in 1806. His devices created an arc of electricity between electrodes, creating a very bright light. While far too dangerous to use at home, they were used in public spaces and commercially.

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Answer:

6 liquids

Explanation:

because yea

Graduated cylinder is used for accuracy

Answer:

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

From the question

velocity = 134 km/h

time = 7.5 hr

We have

distance = 134 × 7.5

We have the final answer as

Hope this helps you

Answer:

418.352441397 Liters

Explanation:

You start off with your equation of PV=nRt, where P= Pressure, V= Volume, n= The amount of moles, R= the gas constant which is 0.0821, and t= The temperature.

You are solving for volume so you would divide the left side by P so you can isolate the Volume. Now you have V=nRt/P.

Next you would fill in all of the variables. n=5.1169, R=0.0821, t=911K, and P=0.9148atm.

You would get the equation V=(5.1169*0.0821*911)/0.9148

Your final answer would be 418.352441397 Liters, or rounded to 418.35 Liters.

The volume of the container is 418.15 L

From the question, we are to determine the volume of the container

From the ideal gas equation, we have that

PV = nRT

Where P is the pressure

V is the volume

n is the number of moles

R is the gas constant ( R = 0.08206 L.atm.mol⁻¹.K⁻¹)

and T is the temperature

From the given information

P = 0.9148 atm

n = 5.1169 mol

T = 911 K

Putting the parameters into the formula, we get

0.9148 × V = 5.1169 × 0.08206 × 911

Then,

[tex]V = \frac{5.1169 \times 0.08206 \times 911}{0.9148}[/tex]

V = 418.15 L

Hence, the volume of the container is 418.15 L

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Taking into account the discriminant and quadratic formula:

Zeros or solutions of a function

The points where a polynomial function crosses the axis of the independent term (x) represent the so-called zeros of the function.

That is, the zeros represent the roots of the polynomial equation that is obtained by making f(x)=0.

In summary, the roots or zeros of the quadratic function are those values ​​of x for which the expression is equal to 0. Graphically, the roots correspond to the abscissa of the points where the parabola intersects the x-axis.

The function f(x) = ax²  + bx + c

with a, b, c real numbers and a ≠ 0, is a function  quadratic expressed in its polynomial form (It is so called because the function is expressed by a polynomial).

The following expression is called discriminant:

Δ= b²- 4×a×c

The discriminant determines the amount of roots or solutions of the function.

Then:

The function (x - 4)² - 28 =8 can be expressed as:

(x - 4)² - 28 -8= 0

(x - 4)² - 36= 0

x²- 8x + 16 - 36= 0

x²- 8x + 16 - 36= 0

x²- 8x - 20= 0

Being:

the amount of solutions are calculated as:

Δ= (-8)²- 4×1×(-20)

Δ= 144

As Δ> 0 the function has two real roots or solutions and its graph intersects the x-axis at two points.

In a quadratic function that has the form:

f(x)= ax² + bx + c

the zeros or solutions are calculated by:

[tex]x1,x2=\frac{-b+-\sqrt{b^{2}-4ac } }{2a}[/tex]

The function (x - 4)² - 28 =8 can be expressed as x²- 8x - 20= 0

Being:

the solutions of the function are calculated as:

[tex]x1=\frac{-(-8)+\sqrt{(-8)^{2}-4x1x(-20) } }{2x1}[/tex]

[tex]x1=\frac{-(-8)+\sqrt{144 } }{2x1}[/tex]

[tex]x1=\frac{8+\sqrt{144 } }{2}[/tex]

[tex]x1=\frac{8+12 }{2}[/tex]

[tex]x1=\frac{20}{2}[/tex]

x1= 10

and

[tex]x2=\frac{-(-8)-\sqrt{(-8)^{2}-4x1x(-20) } }{2x1}[/tex]

[tex]x2=\frac{-(-8)-\sqrt{144 } }{2x1}[/tex]

[tex]x2=\frac{8-\sqrt{144 } }{2}[/tex]

[tex]x2=\frac{8-12}{2}[/tex]

[tex]x2=\frac{-4}{2}[/tex]

x1= -2

Finally, the quadratic function (x - 4)² - 28 =8 has two solutions and the solutions are x1= 10 and x2= -2.

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The heat released : -110560.632 J

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

m =465 g

c water = 4.186 J/gram °C

∆T = temperature difference = 18.2 - 75 = - 56.8 °C

Then the heat :

[tex]\tt Q=m.c.\Delta T\\\\Q=465\times 4.186\times -56.8\\\\Q=\boxed{\bold{-110560.632~J}}\rightarrow -=exothermic[/tex]

Answer:

Molarity I believe

Answer:wont

Explanation:

Answer:

photon

Explanation:

Energy usually travel in a discrete quantities which are very indivisible, this quantity is known as Photons.

Therefore, photon is an elementary particle.

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Answer:

natural gas

Explanation:

natural gas is formed deep beneath Earth's surface which primarily consist of methane.

methane is considered cleanest burning fuel.

Answer:False

False

Explanation:acid concentration and acid strength are two completely different

it is false..hope it helps you

Answer:

Sulfuric acid has a higher density than water, which causes the acid formed at the plates during charging to flow downward and collect at the bottom of the battery.

Answer:

Solubility refers to the maximum amount of solute that dissolves in a given amount of solvent at a particular temperature Factors Affecting Solubility 1. Effect of Temperature For some substances to dissolve in a given solvent, heat is absorbed. The reaction is endothermic. In this case, an increase in temperature increases solubility.

Explanation:

Solubility of a solution is affected by properties like temperature and pressure.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Answer:

There are 5 significant figures

There are five significant figures in the measurement 0.070020 meter.

Significant figures are the number of digits that add to the correctness of a value, frequently a measurement.

The first non-zero digit is where we start counting significant figures. Determine how many significant digits there are given a range of numbers.

The crucial or important digits that accurately represent the meaning of a certain number are known as the significant figures of that number. 6.658, for instance, has four significant digits. These huge amounts give the numbers accuracy.

In the given example there are five first non-zero digit are present.

Thus, There are five significant figures in the measurement 0.070020 meter.

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Answer:

A) acetic acid

Explanation:

Acetic acid most likely has the strongest intermolecular forces. Hence, option A is correct.

The boiling point of a substance is the point at which the vapour pressure of a liquid is equal to the surrounding pressure and water is 313k for absolute temperature and 212°F for Fahrenheit.

The intermolecular force of attraction depends on the strength or extent of Hydrogen bonding present in a substance.

Benzene and chloroform do not have hydrogen bonding being non-polar molecules.

Water has hydrogen bonding being polar.

However acetic acid being the most polar has the maximum hydrogen bonding.

Thus acetic acid has the strongest intermolecular forces of attraction.

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Answer: 1.788 volts.

Explanation:

To solve this problem we can combine battery cells to create higher voltages. Building more lemon batteries and connecting them with a metal wire from "+" to "-" adds the voltage from each cell. The two lemon batteries above, combine to produce a voltage of 1.788 volts.

Answer:

3 i think

Explanation:

The Earth is divided into three main layers. The dense, hot inner core (yellow), the molten outer core (orange), the mantle (red), and the thin crust (brown), which supports all life in the known universe. Earth's interior is generally divided into three major layers: the crust, the mantle, and the core.

The mass of NaOH present in the solution is, 0.0625 grams

The mass is defined as the quantity of the matter present in the solution or in any substance.  

Given that,

Mass % of NaOH in the solution= 25 %

Mass of solution = 0.250 g

The formula will be

[tex]\rm Mass\ percent=\dfrac{mass \ of\ NaOH}{Mass\ of\ solution} \times 100[/tex]

[tex]25=\dfrac{\rm Mass\ of \ NaOH}{0.250} \times 100[/tex]

Mass of NaOH=0.0625 gram

Thus the mass of NaOH present in the solution is, 0.0625 grams

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The mass of NaOH present 0.250 grams of solution is 0.0625 grams.

Mass of any substance present in any solution will be calculated by using their & mass as below:

Mass percent = (Mass of solute / Mass of solution) × 100

Given items according to the question,

% mass of NaOH = 25%

Mass of solution = 0.250g

Now e put these values on the above equation and we get,

Mass of NaOH = (5 × 0.250) / 100 = 0.0625 grams.

Hence, mass of NaOH is 0.0625 grams.

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The answer is D.

Activated complex

Answer:

ruby

Explanation:

Answer:

b

Explanation:

An ionic compound is a type of chemical compound composed of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic forces. The correct answer is:

[tex]K_3P[/tex] : potassium phosphide

[tex]AlI_3[/tex] : aluminum iodide

[tex]MgO[/tex] : magnesium oxide

Ionic compounds are formed through ionic bonding, which involves the transfer of electrons from one atom to another.

In an ionic compound, the cations and anions are attracted to each other due to their opposite charges, forming a crystal lattice structure. The cations are usually metal ions, while the anions are typically non-metal ions. The transfer of electrons creates ions with full outer electron shells, resulting in the formation of stable compounds.

Therefore, the correct answer is:

[tex]K_3P[/tex] : potassium phosphide

[tex]AlI_3[/tex] : aluminum iodide

[tex]MgO[/tex] : magnesium oxide

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Answer:

kinetic energy

potential energy

kinetic energy

kinetic energy

Explanation:

kinetic energy- energy associated with motion

potential energy- the energy that a piece of matter has because of its position or nature.

Answer:

An Olfactory Indicator is a chemical that changes it's scent. This depends on whether it is mixed with an acid or base solution. When mixed, it's called "olfactory titration."

Explanation:

Hope I helped :)

Answer:

Explanation:

The statement which explains the solubility of ionic substances in water is Water molecules are polar.

Ionic compounds contain ions and are held together by the attractive forces among the oppositely charged ions.

Most ionic compounds are soluble in water. Polar water molecules have a strong attraction for charged ions and the charged ions become solvated as they dissociate into the water and ionic compounds are soluble in water.

Break apart of ionic compounds into the ions that make them up through a process called dissociation. All ionic substances are dissociated in water but dissociation may vary.

Water is a polar covalent and all polar covalent substances dissolve in the water because polar water molecules form hydrogen bonds with ions which allow compounds to disperse in water.

Hence, option D is correct.

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The caloric content of the banana in nutritional calories per gram is :

934.4 cal/g

Given data :

mass of banana ( Mb ) = 3.05 g

mass of water ( Mw )= 500 g

change in temperature ( ΔT ) = 5.7°c

Cw =  1.00 cal/g･°c.

First step : calculate heat released

Qw = Mw* Cw * ΔT

      = 500 * 1 * 5.7

      = 2850 cal

Next step : Calculate the caloric content of the banana

caloric content = Qw / Mb

                         = 2850 cal / 3.05 g

                         = 934.4 cal/g

Hence we can conclude that The caloric content of the banana in nutritional calories per gram is : 934.4 cal/g

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