Which process is MOST similar to the development of fossil fuels?

The temperature changes for the water and the metal can be calculated by subtracting their initial temperatures from the final temperature.

AT (water) = √°C - °℃

AT (metal) = √°C - °℃

The above equations give the temperature changes for the water and the metal, respectively. The specific values of the temperatures and the final temperature are not provided, so the actual temperature changes cannot be determined without knowing these values.

In general, the temperature change of a substance is given by the difference between the final and initial temperatures. When a warmer object comes into contact with a cooler one, heat energy is transferred from the warmer object to the cooler one until they reach thermal equilibrium, where their temperatures become equal.

The magnitude of the temperature change depends on factors such as the specific heat capacity of the substances involved and the amount of heat exchanged between them.

To accurately calculate the temperature changes, the specific heat capacities of water and the metal would be needed. Additionally, the masses or quantities of the substances would be necessary to determine the amount of heat exchanged. Without these specific values, it is not possible to provide a precise numerical answer.

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When the pressure decreases from left to right, the acceleration also decreases.

This is defined as the rate at which velocity changes with time and it has a direct relationship with pressure.

This however means that when pressure decreases there will be a corresponding decrease in acceleration and vice versa.

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The percent yield is 86.1%.

The percent yield is a measure of the efficiency of a chemical reaction and is calculated by comparing the actual yield of a reaction to the theoretical yield that could be obtained based on stoichiometry. The percent yield is expressed as a percentage and is calculated using the following formula:

Percent yield = (Actual yield ÷ Theoretical yield) x 100%

We can see;

Number of moles of octane = 3.05 * 10^1/114 g/mol

= 0.27 moles

Then  from the reaction equation;

2 moles of octane produces 16 moles of CO2

0.27 moles of octane would produce 0.27 * 16/2

= 2.16 moles

Theoretical yield of the product =  2.16 moles * 44 g/mol

= 95 g

Thus we have that;

% yield = 8.179 * 10^1 g/95 g * 100/1

= 86.1%

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Answer: There are 0.307 moles of molecules in 35 g of octane.

Explanation: You start by finding the molar mass of octane,(C8H18)This is 114 grams, because there are eight moles of carbon atoms and eighteen moles of hydrogen atoms in each mole of octane molecules.So, we total up 8 x 12 (for the carbon) and 18 x 1 (for the hydrogen).35g÷114 9g. That's it! This answer is the number of moles of octane molecules contained in the 35 grams of the compound.

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mol

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5.05×10²⁴ particles are in 8.4 mole of octane.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

number of atoms/molecules/particles=number of moles × 6.022×10²³(Avogadro number)

number of moles of octane= 8.4 moles

Substituting all the given values in the above equation, we get

number of atoms/molecules=8.4 × 6.022×10²³

number of atoms/molecules=5.05×10²⁴ particles

Therefore, 5.05×10²⁴ particles are in 8.4 mole of octane.

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Answer:

Explanation:

Answer:

1.solar energy drives the cycle by evaporating water from its source and water moves from plants by the process of transpiration

2. in precipitation because the water falls from the sky

3.liquid and gas

Answer:

C6H12O6

Explanation:

C6H12O6

Answer:

The answer is D

Explanation:

Non metals are:

Hydrogen (H)

Sulphur (S)

Phosphorus (P)

Carbon (C)

Fluorine (F)

Oxygen (O)

Nitrogen (N)

Chlorine (Cl)

Bromine (Br)

Helium (He)

Argon (Ar)

Iodine (I)

Neon (Ne)

Krypton (Kr)

Radon (Rn)

Selenium (Se)

Xenon (Xe)

The molarity of 150 mL solution containing 5g of copper (1) chlorate is 0.0051 M

We'll begin by obtaining the number of mole in 5 g of copper (i) chlorate. This is shown below:

Mole = mass / molar mass

Mole of copper (i) chlorate = 5 / 147

Mole of copper (i) chlorate = 0.034 mole

Now, we shall determine the molarity of the solution. Details below:

Molarity of solution = mole / volume

Molarity of solution = 0.034 / 0.15

Molarity of solution = 0.0051 M

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The mass of HCl is:

0.75×36.5/1000 ×25=0.684g.

​

1 mole of calcium carbonate reacts with 2 moles of HCl.

Hence, the mass of calcium carbonate that will react completely with 0.684 g of HCl is

100/2×36.5 ×0.684=0.937g.

What is mole?

Mole, symbol Mole is a unit of quantity of matter in the International System of Units (SI). Amount of matter is a measure of how much a given elementary unit of matter is contained in an object or sample. A mole is defined to contain exactly 6.02214076 × 1023 base units. Depending on the substance in question, the basic entities can be subatomic particles such as atoms, molecules, ions, ion pairs, or electrons. For example, 10 moles of water (a compound) and 10 moles of mercury (a chemical element) contain the same amount of matter, and mercury contains exactly one atom per molecule of water, The two volumes and masses are different.

The number of base units in one mole is known as Avogadro's number and represents the approximate number of nucleons (protons or neutrons) in one gram of ordinary matter. The previous definition of mole was the number of elemental units equal to 12 grams of carbon-12, the most common isotope of carbon.

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Answer:

  -172.6 °C

Explanation:

You want to know the Celsius equivalent of the temperature 100.6 K.

The relation is ...

  C = K - 273.15

  C = 100.6 -273.15 = -172.55

The temperature is -172.55 °C, about -172.6 °C.

__

Additional comment

We have rounded to tenths, because that is precision of the temperature given. If you use 273 as the conversion constant, you will get -172.4.

Answer:

a. The Zn and HCl both retained their identity.

2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams. Density is the mass of a specific material per unit volume.

Density is the mass of a specific material per unit volume. Density is defined as d = M/V, in which d represents density, M is weight, as well as V is volume. Density is generally expressed in grams every cubic centimetre. Water, for example, has a density of 1 gram per square centimeter, but Earth has a density of 5.51 kilograms per cubic centimetre.

Density is sometimes measured in kilos per cubic centimeter (in metre-kilogram-second or SI units). The density of air, for example, is 1.2 kilos per cubic metre. 

density = mass / volume

            =53/ 20

            =2.65g/ml

Therefore, 2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams.

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The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

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Answer:

6.02×10^23atoms of au

Answer:

i think 3

Explanation:

Answer: a homogeneous mixture of two or more substances.

Explanation: water, sugar, flavor mixture (Coke). The substances are physically combined, not chemically combined or bonded to each other. ... The substance dissolved by the solvent.

Answer:

2.4

Explanation:

Answer:

A. The solution with a pH of 2 will turn the litmus paper red

B. The solution with a pH of 8 will turn the China rose indicator green

C. The solution with a Ph of 7 will not change the color of the blue litmus indicator or of the China rose indicator

Explanation:

Blue litmus paper will only change color if it is dipped into an acidic mixture which turns it red. It will not change color at all in a basic or neutral Ph solution.

China rose turns dark pink in an acidic solution and green in a basic solution. However it has no change in color with a neutral solution.

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

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Here are the answers for A and B.

Answer:

(a) 80% are metals.

(b) (1.) Metals are malleable and ductile. (2.) Metals are dense.

Explanation:

(a) If you look at the picture, there are faint lines dividing the circle into ten parts. Metals take up 8 sections and non-metals take up 2. This means that the number of metals on the periodic table takes up 80% and non-metals take up 20%.

(b) There are many physical properties of metals, but two of them are that metals are malleable & ductile (these relate to how metal can be shaped) and that metals are dense (density = mass ÷ volume).

Answer:

1. an incomplete octet is an valence shell that is not fully stable since it doesn't have 8 electrons

2.an odd electron molecule is a molecule that has an odd number of electrons but is still stable

3. there are extra electrons in an expanded octet because the molecules' central atoms make extra bonds that don't comply with the octet rule.

Explanation:

Answer:

Hey mate....

Explanation:

This is ur answer.....

A species considered to be facing a very high risk of extinction in the wild.

Hope it helps you,

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Answer:

It means when a species in the wildlife is in danger or close to being completely extinct.

When a strong acid or base is added to water, the pH will change dramatically.

A strong acid is one that is completely dissociated or ionized in an aqueous solution. This means it gives off the greatest number of hydrogen ions or protons when placed in a solution. Examples of strong acid are HCl, HBr, H2SO4, HNO4. These acids when placed in water, produces greatest amount of hydrogen ions. The pH value changes drastically. Any that has very high concentration of hydrogen and ion is acidic.

Also when base is added to water, the pH of water will increase above 7 and become basic. The pH of water is 7, but when base is added to it increases above 7.

Base is any solution that is slippery to touch in water solution, changes color, react with acid to form salt and change red litmus paper to blue.

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You would need to use 0.8 g of oxalic acid and 0.5 g of magnesium hydroxide to complete the reaction.

Reaction is a process in which one substance is changed into another due to a chemical reaction. In a chemical reaction, molecules interact with each other and form new molecules. It is an important process in nature and industry. During a reaction, energy is released or absorbed depending on the type of reaction taking place. In some cases, the reaction may be reversible, meaning that the products can be converted back into the original reactants. Reactions can be classified as either exothermic, in which energy is released, or endothermic, in which energy is absorbed.

The reaction of oxalic acid and magnesium hydroxide is as follows:
2H2C2O4 + Mg(OH)2 → 2H2O + MgC2O4
Therefore, you would need to use 0.8 g of oxalic acid and 0.5 g of magnesium hydroxide to complete the reaction.

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Answer:

it would go be in the middle where u put it

Explanation:

i hope this helps ^^

Answer:

Boiling - The process of a liquid changing to gas.

Boiling point - The temperature at which a liquid boils.

Condensing - The process of a gas changing to a liquid.

Distillate - The liquid collect from the condenser.

Residue - The liquid left behind in the distillation flask.

Vapour - Another name for gas.

Hope it helps :)

The mass of NaCl in 44mL of a 1.6M solution is 4.1grams.

The mass of NaCl can be calculated by using the following formula;

Molarity = no. of moles ÷ volume

Molarity is the concentration of a substance in solution, expressed as the number moles of solute per litre of solution.

no of moles = 1.6M × 0.044L = 0.07moles

The mass of the sodium chloride solution can be calculated by multiplying the molar mass of the salt by the number of moles present in the solution.

The molar mass of NaCl solution can be calculated as follows;

M.M = 23g/mol + 35.5g/mol = 58.5g/mol

mass of NaCl = 58.5 × 0.07 = 4.1grams.

Therefore, 4.1grams is the mass of NaCl solution.

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The six parts of DNA serially are A) adenine B) thymine C) Sugars D) Phosphate E) Guanine F) Cytosine.

DNA  is a hereditary material  which is present in human beings as well as all other living organisms.  Every cell which is present in an organism's body has DNA  which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.

Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.

DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule  and a phosphate group. A base, phosphate sugar are together called as nucleotides.

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