What happens to the carbon in natural gas when the gas burns in a badly fitted gas fire? Explain your answer
Answers
Explanation:
Fuels such as natural gas and petrol contain hydrocarbons. These are compounds of hydrogen and carbon only. When they burn completely: the carbon oxidises to carbon dioxide
Related Questions
According to the department of transportation, hazardous materials are defined as a megerial that can pose an unreasonable risk to
Answers
According to the Department of Transportation (DOT), hazardous materials are defined as materials that can pose an unreasonable risk to health, safety, or property during transportation.
These materials can include explosives, flammable gases and liquids, toxic substances, radioactive materials, and more. The DOT has specific regulations in place for the transportation of these materials to ensure that they are handled and transported safely to minimize the risk of accidents or harm.
These regulations include:
Requirements for labeling, packaging, and transporting hazardous materials, as well as training for individuals involved in the transportation process.It is important to follow these regulations to prevent accidents and protect the health and safety of those involved in the transportation of hazardous materials.
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Mark as brainliest if you answer it right.
Samantha noticed her hands get colder in winter than other exposed parts of her body such as her face and neck.
Answers
Explain the main concept behind the VSEPR theory of molecular shape. How do both number and type of electron pairs influence the shape of a molecule
Answers
According to the VSEPR hypothesis, each atom in a molecule will develop a shape that reduces the repulsion between its valence shell electrons.
What is the basis of VSEPR theory?According to the valence-shell electron pair repulsion model, or VSEPR model, a molecule will modify its structure to maintain the greatest feasible distance between the valence electron pairs (based on the repulsive behavior of electron pairs). Given that negatively charged electrons repel one another, this makes sense.
How do both the number and type of electron pairs influence the shape of a molecule?Electron pairings resemble groups of individuals who don't get along. They "like" to keep a safe distance between one another. Because carbon has only two electron domains, the molecular geometry of carbon dioxide is linear.
They consequently position themselves in the molecule as far apart as they can. This is how the molecule geometry is influenced by the number of electron domains.
Sulfur tetrafluoride is a trigonal bipyramidal molecule with four bonded and one non-bonding electron pair, or domain. The "shared" region between the two atoms is where the electrons in a covalent bond are most likely to be located. They become high electron density, compact zones as a result.
On the other hand, non-bonding electrons in a molecule's electron cloud are more "free" to "spread out." As a result, they are less dense and occupy a greater volume than bonding domains.
Therefore, what affects the geometry in a molecule is the "size" of a domain and the "desire" for electrons to be as far apart as feasible.
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Is it correct to say that the net chemical result of an electrochemical cell is a redox reaction? Explain.
Answers
It is true that a redox reaction is the electrochemical cell's overall chemical outcome. An electrochemical cell is made up of two half-cells connected by an external circuit: an anode (where oxidation takes place) and a cathode (where reduction takes place).
The movement of electrons from the anode to the cathode through the external circuit causes the redox reaction to happen.
Oxidation, in which a species loses electrons and is oxidized, occurs at the anode half-cell. This causes the release of positively charged ions (cations) into the solution.
Reduction occurs in the cathode half-cell, where a species acquires electrons and is reduced. This causes the amount of positively charged ions (cations) in the solution to decrease.
In its entirety, the process involves moving electrons from the anode to the cathode, which is made possible by the current flowing through the external circuit. To balance the charge, the electrolyte's ions move in tandem with this transfer of electrons. To keep the cell's charge neutrality, the redox reaction happens simultaneously at the anode and the cathode.
Because both oxidation and reduction reactions take place concurrently at the anode and cathode, respectively, the net chemical outcome of an electrochemical cell is therefore a redox reaction.
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Which word describes the way a writer chooses to write their piece?
Answers
The word that describes the way a writer chooses to write their piece is called diction (option A).
What is diction?Diction is the choice and use of words, especially with regard to effective communication. It is also regarded as the effectiveness and degree of clarity of word choice and expression.
Diction refers to the linguistic choices a writer makes to effectively convey an idea, a point of view, or tell a story. In literature, the words used by an author can help establish a distinct voice and style.
Authors use dictions for the careful selection of words to communicate a message or establish a particular voice or writing style. For example, flowy, figurative language creates colorful prose, while a more formal vocabulary with concise and direct language can help drive home a point.
The options to the incomplete question are as follows:
A) Diction
B) Syntax
C) Tone
D) Sentence
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Balance the following equation: H2O(l) → H2 (g) + O2 (g)
Answers
Answer:
2 H2O(l) → 2 H2(g) + O2(g)
Explanation:
H2O(l) → H2 (g) + O2 (g)
Add 2 to both sides:
Reactants: Products:
H: 2+2=4 H: 2+2=4
O: 1+1=2 O:2
2 H2O(l) → 2 H2(g) + O2(g)
Therefore it is balanced, hope this helps.
PLEASE HELP WILL GIVE BRAINLIEST ANSWER!
58.5 grams of NaCl is dissolved in 0.5 liters of water. The molarity of the solution is _____.
b. 2 M
c. 29.25 M
d. 117 M
Answers
Molar mass of NaCl = (23 g/mol) + (35.5 g/mol) = 58.5 g/mol
Moles of
NaCl
dissolved
=
10 g
58.5 g/mol
=
117 mol
58.5 grams of NaCl is dissolved in 0.5 liters of water, then the molarity of the solution is 2M.
What is molarity?Molarity of any solution is define as the number of moles of solute present in per liter of solution and it is represented as:
M = n/V, where
V = volume of solution = 0.5 L
n is moles and will be calculated as:
n = W/M, where
W = given mass of NaCl = 58.5g
M = molar mass of NaCl = 58.44 g/mol
n = 58.5/58.44 = 1 mole
Molarity will be represented as:
M = 1/0.5 = 2 M
Hence required molarity of NaCl is 2M.
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How much of a 20% solution can be made from 45g of NaCl?
Group of answer choices
22.5 mL
40.2 mL
32.0 mL
225 mL
Answers
A 20% solution can be made from 45g of NaCl by:
d. 225 mL
To determine how much of a 20% solution can be made from 45g of NaCl, we need to calculate the volume of the solution.
First, we need to understand that a 20% solution refers to 20 grams of NaCl dissolved in 100 milliliters of solution. This means that in every 100 mL of the solution, 20 grams of NaCl is present.
To find out the volume of the solution that can be made from 45g of NaCl, we can set up a proportion:
20 grams / 100 mL = 45 grams / X mL
Cross-multiplying the values, we get:
20 grams * X mL = 45 grams * 100 mL
Simplifying the equation:
20X = 4500
Dividing both sides by 20:
X = 4500 / 20
X = 225
Therefore, the volume of a 20% NaCl solution that can be made from 45g of NaCl is 225 mL.
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Identify which properties are common to each of the following chemical families
(a) alkali metals
(b) alkaline earth metals
(c) halogens
(d) noble gases
Answers
The noble gases have a full outer shell of valence electrons, making them stable and unreactive. They are colorless, odorless gases at room temperature and have very low boiling points. Their lack of reactivity makes them useful in a variety of applications, including lighting and welding.
The properties that are common to each of the following chemical families include:
(a) Alkali metals The alkali metals have a single valence electron in their outermost shell, which is easily lost to form an ion with a charge of +1. They are the most reactive metals, reacting with water and air to produce hydrogen gas and an oxide layer, respectively. They are silvery-white and have a soft texture.
(b) Alkaline earth metals The alkaline earth metals have two valence electrons in their outermost shell, which they readily lose to form ions with a charge of +2. They are less reactive than the alkali metals, but they still react with oxygen to form an oxide layer on their surface. They are also silvery-white in color and have a harder texture than the alkali metals.
(c) Halogens The halogens have seven valence electrons in their outermost shell, making them highly reactive nonmetals. They readily form ions with a charge of -1 by gaining an electron. They are diatomic molecules at room temperature and can be found in a variety of colors and states of matter.
(d) Noble gases The noble gases have a full outer shell of valence electrons, making them stable and unreactive. They are colorless, odorless gases at room temperature and have very low boiling points. Their lack of reactivity makes them useful in a variety of applications, including lighting and welding. These properties are common to each of the following chemical families.
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C. Multiple Choice: Highlight or underline the letter and answer which best matches the question. 1. Which is the method that is used to separate and recover the parts of a liquid solution? a) Condensation b) Distillation c) Evaporation d) Saturation 2. Which of the following is an example of a solution?
Answers
Answer:
Mam Mayank is joined....
Answer:
Which is the method that is used to separate and recover the parts of a liquid solution-Destillation.
Which of the following is an example of an element? a water b air c sugar d oxygen
Answers
Answer:
d. Oxygen
Explanation:
- Water is not an element but a compound made of hydrogen and oxygen elements
- Air is a compound made of gases such as oxygen, nitrogen, rare gases and carbondioxide...
- Sugar is an organic compound (sucrose) made of carbonyl carbons and hydrocarbons
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Relative humidity is described as: Group of answer choices a basically unused concept when it comes to weather topics. the amount of water vapor in the air at a given temperature expressed as a percentage of the water vapor capacity of the air. the amount of water vapor in the air compared to the normal amount. the amount of moisture in the air relative to your own sensible feelings.
Answers
Correct answer:
The relative humidity is best described as the amount of water vapor in the air at a given temperature expressed as a percentage of the water vapor capacity of the air.
What is relative humidity?
The ratio of the current absolute humidity to the highest absolute humidity is known as relative humidity (which depends on the current air temperature).
Water vapor is also measured by relative humidity, which is stated as a percentage but RELATIVE to the air's temperature. In other words, it is a comparison between the amount of water vapor that is actually present in the air and the maximum amount of vapor that is possible for the air at the current temperature.
With the same quantity of absolute/specific humidity, air will have a HIGHER relative humidity if it is cooler and a LOWER relative humidity if it is warmer because warm air may contain more water vapor (moisture) than cold air. The actual amount of moisture (absolute humidity) in the air is what we "feel" outside.
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what is the pH of a solution with [H+] = 1.25 x 10^-10M?
Answers
pH = -log[H+]
Given [H+] = 1.25 x 10^-10 M:
pH = -log(1.25 x 10^-10)
pH = -log(1.25) + log(10^-10)
pH ≈ -9 + (-10)
pH ≈ -19
Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately -19.
Answer:
9.90
Explanation:
Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:
pH = -log10([H+])
pH = -log10(1.25 x 10^-10)
Using logarithmic properties:
pH = -log10(1.25) - log10(10^-10)
Since log10(10^-10) is equal to -10:
pH = -log10(1.25) - (-10)
pH = -log10(1.25) + 10
Now, evaluating the logarithm using a calculator:
pH = -0.0969 + 10
pH = 9.9031
Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.
Need help!! plssss
what is the amount of 12.5 molar acid needed to create a 250.0 mL of a 3.0 molar solution
Answers
The amount or initial volume of the acid required is determined as 60 mL.
What is the amount of the acid required?The amount of 12.5 molar acid required to create a 250.0 mL solution is calculated by using the following formula
C₁V₁ = C₂V₂
Where
C₁ is the Initial concentration of the acidV₁ is the Initial volume of the acidC₂ is the Final concentration of the acidV₂ is the Final volume of the acidThe given parameters include;
Initial concentration of the acid, C₁ = 12.5 M
Final concentration of the acid, C₂ = 3.0 M
Final volume of the acid, V₂ = 250.0 mL
V₁ = ?
The amount or initial volume of the acid required is calculated as;
12.5 (V1) = 3 x 250
V₁ = (3 x 250 ) / 12.5
V₁ = 60.0 mL
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Think of an everyday situation in which two objects interact and exert a force on each other. Explain how the interaction can cause energy to be transferred from one object to the other
Answers
Answer:
It's explained below.
Explanation:
An everyday situation is when we raise an object.
Now, when we raise an object, energy is transferred to the Earth object system and thus the gravitational field energy of the system will increase.
Now, this energy is usually released when the object falls. The mechanism of this release is known as gravitational force.
In the same manner, two magnetic and electrically charged objects that are interacting at a distance will exert forces on each other and this can lead to transfer of energy between the interacting objects.
Help me pleeaseee!!!!
Answers
describe how to identify the smell of gas in the laboratory
Answers
Answer:
When you are in the laboratory and take a direct sniff the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When its necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air towards your face.
Gas is a naturally odourless substance, but the completely harmless artificial smell is added to make it more detectable. The substance is called mercaptan and gives off a strong sulphur like smell.
The next level of organization is the _____.
Answers
Answer:
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
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Calcium has a density of 2.72 g/ml. What is the mass of 24.9 ml of calcium?
Answers
for the experiment, an initial concentrated solution of sodium chloride will be made with ~30 grams of sodium chloride and ~100 ml of water. determine the weight percentages of sodium chloride and water in the solution. using the linear equation, determine the theoretical density of the initial concentrated solution.
Answers
The weight percentages of sodium chloride is 23.1 % and water is 76.9 % in the solution. The theoretical density of the initial concentrated solution is 0.30 g/mL.
The mass of the sodium chloride = 30 g
The mass of the water = 100 mL = 100 g
The total mass = 30 + 100
= 130 g
The mass percentage of sodium chloride = (30 / 130 ) × 100 %
= 23.1 %
The weight percentage of the water = ( 100 / 130 ) × 100 %
= 76.9 %
The density of the solution = mass / volume
= 30 / 100
= 0.30 g/mL
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Which substance is a type of biomolecule that can be used for energy storage and insulation? O A. Nucleic acid O B. Carbon dioxide O C. Lipid D. Protein
Answers
Answer:
Protein
Explanation:
Protein is used to make insulation (like fat) and is used to store energy taken form food (please tell me if this works)
Protein which is made up of amino acids is a type of biomolecule that can be used for energy storage and insulation.
What are amino acids?Amino acids are defined as the substances which are considered to be the monomers of proteins.Every amino acid has the same structure consisting of a central carbon which is bonded to an amino group , carboxyl group and a hydrogen.
Each amino acid also has another atom or a group of atoms bonded to the alpha carbon which are also known as the R group or the variable group of the side chain.There are 20 common amino acids present in natural proteins and each amino acid has the same backbone.
The sequence and number of amino acids determines protein's shape,size and also its function. Each amino acid is attached to the other by a covalent bond formed by a dehydration reaction.
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Magnetite has the chemical formula, Fe3O4. Which class of minerals would magnetite be placed?
sulfates
oxides
silicates
sulfides
carbonates
Answers
Magnetite, with the chemical formula Fe3O4, belongs to the class of minerals known as oxides.
Oxides are minerals that consist primarily of oxygen combined with one or more metal elements. They are formed when metals combine with oxygen during the process of oxidation. In the case of magnetite, it is composed of iron (Fe) and oxygen (O), with three iron atoms and four oxygen atoms, giving it the chemical formula Fe3O4.
Magnetite is a well-known and important magnetic mineral. It is one of the main sources of iron ore and is widely used in various industrial applications, including steel production and as a catalyst. Its strong magnetic properties make it useful in magnetic storage devices such as hard drives and audio speakers. Being classified as an oxide, magnetite is part of the diverse group of minerals that share similar characteristics and compositions, characterized by the presence of oxygen combined with metal elements.
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If scientists want to determine if a skin cream is effective against fighting acne, what would be the independent variable?
Answers
Answer:skin cream
Explanation:
the independent variable is the variable that is always changed or manipulated. in this case the skin cream is the independent variable.
3000.0 J of thermal energy is added to a 250.0 g block of metal and thetemperature is increased by 37.5 °C. Based on the values in the followingtable of specific heats, which is the most likely identity of this metal
Answers
ANSWER
\(\begin{gathered} \text{ The specific heat of the metal block is 0.32 J/g}\degree C \\ \text{ The metal is Germanium} \end{gathered}\)EXPLANATION
Given information
The thermal energy added is 3000 J
The mass of the metal block is 250.0 grams
The temperature change is 37.5 degrees Celcius
Firstly, we need to find the specific heat capacity of the metal block
To find the specific heat capacity of the metal block, follow the steps below
Step 1: Write the formula for calculating the heat of a substance
\(\begin{gathered} \text{ q = mc}\Delta\theta \\ \text{ Where} \\ q\text{ = heat energy} \\ m\text{ = mass} \\ c\text{ = specific heat capacity} \\ \Delta\theta=\text{ increase in temperature} \end{gathered}\)Step 2: Substitute the given data into the formula in step 1 to find c
\(\begin{gathered} q\text{ = mc}\Delta\theta \\ \text{ make c the subject of the formula} \\ \text{ c = }\frac{q}{m\Delta\theta} \\ \text{ c = }\frac{3000}{250\text{ }\times37.5} \\ c\text{ = }\frac{3000}{9375} \\ c\text{ = 0.32 J/g}\degree C \end{gathered}\)Hence, the specific heat capacity of the metal block is 0.32 J/g degrees Celcius
According to the table of specific heats, the metal that has the above specific heats is Germanium
Nuclear fission occurs when _______________ a. TNT and plutonium are combined, causing the molecules to separate. b. a nucleus breaks up into two equal fragments that release and separate more atoms. c. like atoms collide to create double nuclei. d. trinitite is created by multiple molecules that form a single atom.
Answers
Nuclear fission occurs when a nucleus breaks up into two equal fragments that release and separate more atoms. The correct answer is option b.
In nuclear fission, a heavy nucleus, such as uranium-235 or plutonium-239, absorbs a neutron and becomes unstable. As a result, the nucleus splits into two smaller nuclei, releasing a large amount of energy. These smaller nuclei, called fission fragments, also release additional neutrons, which can go on to cause more fission reactions.
This process creates a chain reaction, where each fission event triggers more fission events, releasing an enormous amount of energy. This energy is harnessed in nuclear power plants to generate electricity. It is important to note that nuclear fission is different from nuclear fusion, which is the process of combining two light atomic nuclei to form a heavier nucleus, also releasing energy. Thus, the correct answer is option b.
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Write the correct ionic formula for the compound formed between the following:
A. Na⁺ and O²⁻
B. Br ⁻ and Al³⁺
Answers
A. The ionic formula for the compound formed between Na⁺ and O²⁻ is Na₂O.
B. The ionic formula for the compound formed between Br⁻ and Al³⁺ is AlBr₃.
What is an ionic formula?
Ionic formula, also known as chemical formula, is a representation of a chemical compound that shows the relative number and types of ions present in the compound. It is the shorthand notation that is used to describe the ionic compound in a simple and concise manner. Ionic compounds are composed of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic forces of attraction.
The ionic formula shows the ratio of ions in the compound, with the cation written first and the anion written second, using subscripts to indicate the number of each ion present. For example, the ionic formula for table salt (sodium chloride) is NaCl, which indicates that one sodium ion (Na+) is present for every one chloride ion (Cl-) in the compound. The ionic formula is essential in understanding the composition and properties of ionic compounds and is widely used in chemical nomenclature, chemical equations, and chemical reactions.
This is because sodium (Na⁺) has a valency of +1, while oxygen (O²⁻) has a valency of -2. To form a neutral compound, two sodium ions are needed for every one oxygen ion, resulting in the formula Na₂O.
This is because aluminum (Al³⁺) has a valency of +3, while bromine (Br⁻) has a valency of -1. To form a neutral compound, three bromine ions are needed for every one aluminum ion, resulting in the formula AlBr₃.
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8. A sample of CO2 experiences a change in pressure from 239.18 kPa to 442.6 kPa. During
this change, the temperature is also changed from 267.86 K to 399.29 *C. If its new volume is
7680.5 mL, what was its original volume in liters?
Answers
Answer:
v1=35,679.7 ml
Explanation:
p1v1/t1=p2v2/t2
v1=t1p2v2/p1t2
v1=672.44*442.6*7650ml/267.86*239.18
v1=35,679.7 ml
The pylons are made of steel.
The steel is mainly iron.
Iron is extracted from iron oxide, Fe₂O3.
In the production of the iron, carbon dioxide is also produced.
(i) Calculate the relative formula mass of carbon dioxide, CO2.
(relative atomic masses: C = 12, O = 16)
Answers
1. Which term identifies a factor that will shift a
chemical equilibrium?
A) atomic radius
B) catalyst
C) decay mode
D) temperature
Answers
Answer:
D) Temperature,
Explanation:
0.630 moles of sodium chloride are how many grams (with calculation)
Answers
Answer:
Heyaa!! Im Pinky and Im here to inform you that your answer is...
Explanation:
!!! 36.8189451 Grams !!!
Have an amazing day!!!
~Pinky~!!
Step by step explanation: 1 mole =114.818 grams, so you would multiply 114.81 by 0.630