Create a model using images that would show what would happen to the igneous rock when it is exposed to different energy sources.

Answer: Both the hydrogen atoms present in carbonic acid are replaceable and thus the maximum no of H atoms can be removed is 2.

Explanation:

Hydrogen is not bonded to another hydrogen in carbonic acid. Although the shorthand formula is H2CO3 which must be the reason behind the question, the structure is actually:

Meaning that each of the hydrogen atoms is in resonance with an oxygen. Since the oxygens are by themselves very electronegative, meaning they attract the hydrogen electron very strongly and stably, they can easily loose the hydrogen proton.

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Answer:

1.)3.33045

2.)0.02550535714

3.)53.21

4.)26.56

5.)6.72672

6.)3.351

7.)843750

8.)227376.25

9.)0.00172776

10.)8.9577346e+33

Explanation:

1s22s22p63s^13p^3 is correct electron configuration for SI atomic number.

What is electron configuration?
The distribution of electrons in an element's atomic orbitals is described by the element's electron configuration. Atomic electron configurations adhere to a standard notation in which all atomic subshells that contain electrons are arranged in a sequence with the number of electrons they each hold written in superscript. For instance, sodium's electron configuration is 1s22s22p63s1. Long electron configurations are frequently produced by the standard notation. In these circumstances, a shortened or condensed version of the standard notation may be used. The sequence of fully filled subshells that represent the electronic configuration of a noble gas are replaced in the abbreviated notation by the symbol for that noble gas enclosed in square brackets.

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The percent yield of SiC is 76.6% if 79.1 grams of carbon reacts with an excess of silicon dioxide and 67.4 g of silicon carbide is actually recovered.

The first step is to balance the equation that is given. On balancing we get,

SiO2 + 3C  → SiC +  2CO                                            

In the Next step, we need to Determine the theoretical amount of silicon carbide produced (if all carbon reacted).

"Excess silicon dioxide" in the question can be interpreted that carbon being the limiting reactant, and thus the amount of silicon carbide produced depends on how much carbon is available to react in the reaction.

From the balanced equation, it could be understood that for every 3 moles of carbon reacted, 1-mole silicon carbide is produced. Therefore,

Molar mass carbon = 12.01 g/mol

Molar mass silicon carbide = 28.09 g + 12.01 g

Molar mass silicon carbide = 40.1 g/mol

Then,

Theoretical yield = 79.1 g x (1 mol / 12.01 g) x (1 mol / 3 mol) x (40.1 g / 1 mol)

Theoretical yield = 88.04 g SiC

Therefore the theoretical yield is 88.04g

From the given values the percent yield can be computed as,

Percent yield = (actual yield of SiC / theoretical yield of SiC) x 100%

                  = (67.4 / 88.04) x 100%

                  = 0.766 x 100%

% yield of SiC = 76.6%

Therefore, the percent yield of SiC is 76.6%

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Answer:

Graph D.

Explanation:

Explanation:

We have to find the net charge of a polyatomic ion that contains 49 protons and 50 electrons.

n° of protons = 49 n° of electrons = 50

The charge of each electron is -1 and the charge of each proton is +1.

charge of electron = -1 charge of proton = +1

Finally the net charge will be:

Net charge = n° of electrons * charge of electron + n° of protons * charge of proton

Net charge = 50 * (-1) + 49 * (+1)

Net charge = -1

Answer: C) -1

We are given the liters and molarity of the solution. To find grams we must take into account the definition of molarity. Molarity is defined as:

Now, we find the moles of solute:

Now, to convert these moles to grams we must multiply the moles by the molar mass of Ca(NO3)2. Molar mass Ca(NO3)2 is 164.10g/mol.

So, the grams will be:

Answer: There are present 394grams of Ca(NO3)2

Answer & Procedure

To solve this problem you will need to transform all the concentrations to the equivalence of ppm, which is 1 mg of solute per 1 L of solution.

Calcium: There are 43 μg of calcium in a total volume of 87 mL.

Caffeine: There is 0.91 mg of caffeine in a total volume of 105 mL.

Trace particles: There is 0.47 mg of trace particles in a total volume of 95 dL.

An oxidizing agent is required. In c), there's no extrude withinside the oxidation numbers, so nor is required. Indicate whether or not every of the subsequent chemical conversions REQUIRES an oxidizing agent (O), a decreasing agent (R), or neither (N).

a) NO31- NH3

b) PO33- PO43-

c) AgCl Ag1+ + Cl1-

a) NO3- --> NH3 Requires a decreasing agent

b) PO33- --> PO43- Requires an oxidizing agent

c. AgCl --> Ag+ + Cl- There isn't any extrude in oxidation wide variety.

You discern this out with the aid of using searching on the oxidation numbers of factors withinside the equations. In the primary one, the oxidation wide variety of N decreases. Since that is a reduction, a decreasing agent is required. In b), the oxidation wide variety of P increases. Since that is an oxidation, an oxidizing agent is required. In c), there's no extrude withinside the oxidation numbers, so nor is required.

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The frequency of a wave 2.8 x 10³ Hertz is then the wavelength of these gamma rays is 107 nm

Wavelength is the the distance between two successive crests or troughs of a wave

Here given data is

Frequency = 2.8 x 10³ Hertz

Velocity of gamma rays = 3×10⁸m/s

We have to calculate wavelength of these gamma rays?

So, wavelength = velocity/frequency

λ = v/f

λ = 3×10⁸m/s/2.8 x 10³ Hertz

λ = 107 nm

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The heat energy teaspoon of boiling water and a swimming pool full of room temperature water then swimming pool have more heat energy than the teaspoon of boiling water

Heat energy is the result of movement of tiny particles called as atom, molecule, or ion in solid liquid and gases and heat energy is the transfer from one object to the another and in Celsius scale water freezes at 0°C and boil at 100°C to 90°C however the swimming pool contains a lot more water therefore the pool has more thermal energy than the cup of tea even though the tea is hotter than the water in the pool that's why heat energy is more in the swimming pool then in teaspoon of boiling water

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Answer:

Seven waves make up the electromagnetic spectrum.

Explanation:

Radio Waves

Used in television and radio broadcasts

Microwaves

Used for satellite communications and heating up food

Infrared radiations

Used in electric heaters and other heating devices.

Visible light

used for fibre optic communications

Ultraviolet rays

used in energy-efficient lamps, sun tanning

X-rays

Medical imaging and treatments

Gamma rays

used for sterilizing and disinfecting

Wavelengths down the spectrum increase as the frequency decreases.

55,035.5 Joules

Heat of vaporisation is the amount of energy required to transform a mole of liquid water into gas at constant temperature.

Given the following parameters:

Mass of water = 24.40 grams

ΔHvap = 40.6 kJ/mol

Determine the moles of water

Mole = mass/molar mass

Mole = 24.40/18

Mole of water = 1.356moles

Determine the required heat required

Q = mole of water * ΔHvap

Q = 1.356moles * 40.6kJ/mole

Q = 55.0355kJ

Q = 55.0355 * 1000

Q = 55,035.5 Joules

Hence joules of heat needed to completely vaporise 24.40 grams of water at its boiling point is 55,035.5 Joules

When aluminum is reacts copper (II) chloride then it will form aluminum chloride and Copper.

Aluminum as well as copper(II) chloride combine very vigorously, causing the reaction mixture to become extremely hot as heat was produced, the aluminum foil to breakdown, a reddish brown solid to appear, as well as gas bubbles to be released.

The chemical reaction can be written as:

2Al + 3CuCl2 → 3Cu + 2AlCl3

Therefore, Copper and aluminum chloride will be formed after the reaction as a product.

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Answer: C.  Waves don't move matter, just energy.

Explanation:

The pH of the solution after addition of 50.0ml is 0.1003

pH is known as the negative logarithm of the hydrogen ion concentration in a solution.

 In the given condition we have 100 ml of sample of 0.18 molar of HclO4 titrated with 0.27m LioH.

   pH = log[H+]

        = log [Hclo4]

Mole of Hclo4 0.1 L * 0.18 m = 0.018 M

mol LiOH = 0.1 L * 0.27 m = 0.027 M

total volume = 0.1L + 0.1L = 0.2L

HClO4] = (0.018-0.0081) /0.2 L

= -1.26 billion

PH = -㏒ -1.26

= 0.1003

So, the pH of the solution after adding 100 ml of liquid is 0.1003

An ionic bond is also called an electrovalent bond. It is formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Answer: charge attraction.

Power is an objects' change in energy over a specific time.

We define the term power as the rate of the change of energy with time. We know that the energy of a body has to do with the ability of the body to do work.

This implies that we can be able to write the formula of the power of a body as the following;

Power = Energy/ Time

Thus we can now see that power is the change in energy over a specific time. This is how we can be able to obtain the /power of an object under study.

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A state function only depends on the thermodynamic system's starting and current states.

A thermodynamic system is a collection of objects or a significant region of space. The surroundings or mass outside the system is referred to as such, and the border is the region separating the two.

For instance, if we are examining a car engine, the thermodynamic system is the gasoline burning inside the engine's cylinder, and the system's surrounds are the radiator, exhaust system, piston, and outside air. The inner surfaces of the cylinder and piston then form the boundary.

The cosmos is made up of the system and its surroundings. Thermodynamic systems can be classified as open, closed, or isolated. With its surroundings, an open system can interchange both matter and energy. Since heat and water vapor can be lost to the air, the stovetop example would be considered an open system.

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ANSWER

They are positively charged and move toward an anode

Option C

EXPLANATION

In electrochemical reaction, cation are positively charged. Since they are positively charged, they move toward negatively charged anode

There are two types of reaction which are oxidation and reduction reaction. At oxidation, the positively charged cations move towards the negatively charged anode.

Recall, that like charges attract and unlike charges repel.

Therefore, the correct answer is option C

Kilocalorie is a unit of measuring the amount of energy of a reaction, but this is not the only unit, we can also have Joules as a unit, and the conversion is:

1 Kcal = 4184 Joules

Therefore if we have 3.25 Kcal, we will have:

3.25 * 4184 = 13600 Joules of energy, therefore letter D

Answer:

spring

Explanation:

Answer

Ala-Ala-Thr-Ala-Thr

Procedure

We will use the genetic code in the table below to solve this question.

Every three consecutive letters need to be matched with the given code

A good strategy s to split the sequence as follows: GCC-GCG-ACC-GCU-ACU

After matching, we have:

Ala-Ala-Thr-Ala-Thr

According to the beer-lambert law when its concentration increases  so does the absorbance increase.

beer-lambert law states that the amount of energy absorbed or transferred by a solution is proportional to the molar absorptivity of the solution and the concentration of the solute.

This means that concentrated solutions absorb more light than dilute solutions.

so the According to the beer-lambert law concentration increases, so does the absorbance. Therefore, absorbance is directly proportional to concentration.

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Answer:

Explanation:

Magnification = 20  * 80

1600

Answer

c. Litmus Is red phenolphthalein is colorless

Explanation

A solution with a pH of 3 is acidic. The main use of litmus is to test whether a solution is acidic or basic, blue litmus turns red under acidic conditions, and red litmus turns blue under basic or alkaline conditions. Phenolphthalein is often used as an indicator in acid–base titrations. phenolphthalein, it turns colorless in acidic solutions and pink in basic solutions.

Therefore, the correct option for a solution with a pH of 3 is:

c. Litmus Is red phenolphthalein is colorless

Catalysts will increase the rate of polymerization and decrease the activation energy necessary for further polymerization.

Polymerization is a chemical reaction that involves the joining of simple molecules to generate long-chain molecules. Catalysts accelerate polymerization by decreasing the activation energy required for further polymerization. Catalysts can be light, heat, water, acids, or other compounds. Uncontrolled polymerization frequently results in a massive release of energy. In the blue and yellow portions of the ERG, materials that may undergo violent polymerization if exposed to heat or pollution are denoted with a P.

Inhibitors are compounds that are applied to easily polymerizing products to inhibit or avoid an undesirable reaction. Inhibitors increase the amount of activation energy required.

Therefore catalysts will increase the rate of polymerization and decrease the activation energy necessary for further polymerization.

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In this question we are given with the value of atmospheric pressure 764.7 torr.

And a sample of gas is placed in vessel attached to an open-end mercury manometer.

The level of mercury in the open-end arm of the monometer has a height of 136.4 mm and that in the arm that is in contact with the gas has a height 103.8 mm.

We know that,

h is the difference of heights of manometer and contact point

h = 136.4 - 103.8

h = 32.6 mm

On considering acceleration to the gravity, g =  10m/ss

Pressure inside the glass = dgh

So,

pressure of gas in atmosphere = 764.7 + 32.6 = 797.3

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