HELP PLEASE ! Where do oil and natural gas come from? Make sure to include information about
the rock cycle, the history of life on Earth, fossils, and how fossils form.
Answers
Natural gas is found in rock formations deep below the surface of the Earth. Petroleum, or oil, is often found in the same areas.
Related Questions
Would you expect higher or lower conductivity from a solute that does not dissolve well in solution?
Answers
It will be lower conductivity from a solute that does not dissolve well in solution.
The conductivity of the solution will be lower than that of entirely dissociating compounds if an ionic compound does not completely dissociate.Ions are created when an ionic substance dissociates in water and dissolves. As is well knowledge, the degree of an ionic compound's dissociation directly relates to the conductivity of an ionic solution. An ionic compound's conductivity will be high if it dissociates more.The compound's conductivity will be lower if it dissociates less.The ionic compound with less dissociation would thus have lower conductivity, as may be deduced.To know more about conductivity visit : https://brainly.com/question/1336689
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which is the best unit of measurement for the volume of a liquid in science?
gallons
liters
feet
meters
Answers
Answer - Cubic meter (aka the meters)
Explanation - The SI unit of volume is the cubic meter (m3), which is a derived unit. Liter (L) is a special name for the cubic decimeter (dm3).
In the laboratory, a student dilutes 29.0 ml of a 7.71 m hydroiodic acid solution to a total volume of 200.0 ml. what is the concentration of the diluted solution?
Answers
The concentration of the diluted solution is 1.11M , using formula M1V1=M2V2 (whereM = molarity , V = volume).
The formula M1V1=M2V2 is the most widely used.
You must ensure that M stands for Molarity and V for Volume in Liters in this formula. You must divide 29.0 mL by 1,000 in order to convert this problem's mL to L units (mL =.0290 L).
M1 is the specified molarity (7.71M), and V1 is the specified molarity's volume (.0290 L).
The final molarity M2 is what we are looking for, and the final volume V2 equals 1000 L. (remember to convert the 200.0 mL to L)
Fill in the formula with your numbers.
(X) × (0.2000 L) = (7.71M) × (0.0290 L)
(7.71M) × (0.0290 L) / (0.2000 L) = (X)
1.11M = X
Given that we maintained the same number of moles in the solution, this makes sense.
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Write equation for the following acid-base reaction.
f3ccoona + br3ccooh
express your answer as a chemical equation.
Answers
[tex]Br_{3} CCOOH[/tex]+[tex]F_{3} CCOONa[/tex] → [tex]F_{3} CCOONaH + Br_{3} CCOO^{-}[/tex]
What is the significance of chemical equations?Chemical equations show us the products of reactions as well as how they form. They can be used to predict the outcomes of a reaction. We can predict what will happen if magnesium (a metal) reacts with hydrochloric acid (an acid, of course!) using this rule.When one or more chemicals are converted into one or more other chemicals, a chemical reaction occurs. Examples include iron and oxygen reacting to form rust, and vinegar and baking soda reacting to form sodium acetate, carbon dioxide, and water.A chemical equation is a symbolic representation of a chemical reaction in the form of symbols and formulae, with the reactant entities on the left and the product entities on the right, with a plus sign between the entities in both the reactants and the products and an arrow pointing towards the products and indicating the direction of the reaction. The absolute values of the stoichiometric numbers are represented by the coefficients next to the symbols and formulae of entities. Jean Beguin drew the first chemical equation in 1615.
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PLEASE HELP ME IM ALMOST DONE WITH MY TEST
Which of the following statements about polyatomic ions is false?
Select one:
a. Polyatomic ions act like a single atom.
b. Each polyatomic ion has a single oxidation number.
c. Polyatomic ions are found in nature.
d. Polyatomic ions do not combine with ions of the opposite charge to form chemical compounds.
Answers
Answer:
D
Explanation:
Opposite charge
why is it important and be able to identify chemical and physical changes
Answers
Answer: because without them we can't produce any type of substances as for producing new products physical or chemical change is necessary
Explanation:
What would happen to the
Moon if the Earth's mass
increased?
Answers
When the Earth's mass is increased moon would spiral toward Earth.
The Moon, the fifth-largest moon in the solar system, is the sole natural satellite of Earth. Our planet's wobble is lessened and our climate is moderated by the moon's existence. The Moon is approximately 240,000 miles away from Earth (385,000km). The exosphere, the Moon's extremely thin atmosphere,
Earth's gravitational pull is influenced by its mass. The moon would move towards earth if the mass increased since the gravitational force would likewise increase.Likewise,The moon would move farther away if the mass reduced since the gravitational force would likewise decrease.The moon is close to the earth and visible at night because of gravity.
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Enzymes are specific or picky. So the enzyme that works with a chemical reaction of triglycerides will.
Answers
Enzymes are specific or picky. So the enzyme that works with a chemical reaction of triglycerides will work with more triglycerides.
In living organisms, enzymes are kinds of proteins that work as catalysts and accelerate the rate of chemical reactions without consuming themselves.
Enzymes are essential ingredients for humans as they are responsible for respiration, nerve function, and food digestion.
Moreover, these proteins are also vital for catabolic and anabolic reactions as they build and break substances.
These are found in all living things and are synthesized naturally in the human body.
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John wants to prove that the paved area of the playground is hotter than the grassy area of the playground. He measures the temperature of each area at three different times of the school day and records the temperatures. He does this for five days in a row. Thomas wants to replicate John's experiment. Which statement describes a situation that could cause Thomas's data to vary from John's data?
Answers
The statement that describes a situation that could cause Thomas's data to vary from John's data is as follows: Thomas measures the temperatures only on the sunny days.
How is an experiment replicable?An experiment is usually conducted under controlled conditions to test a hypothesis or determine the validity of an existing truth.
According to this question, John wants to prove that the paved area of the playground is hotter than the grassy area of the same playground. He measures the temperature of each area at three different times of the school day and records the temperatures.
However, Thomas wants to replicate this experiment carried out by John. To get the same results after replication, one must ensure to control every variable that was initially controlled.
Therefore, this means that if Thomas measures the temperatures only on the sunny days, he will get a different data from John's data because John measured the temperature on three different times of school days.
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___________ is a dangerous concept because toxic chemicals concentrate as they pass up the food chain. group of answer choices
Answers
Biomagnification is a dangerous concept because toxic chemicals concentrate as they pass up the food chain. group of answer choices
What is biomagnification?
Biomagnification is defined as the accumulation of a particular substance in the body of the organisms at different trophic levels of a food chain. An example for biomagnification is the accumulation of insecticide DDT which gets accumulated in zooplanktons. Zooplanktons are those which consumes small fishes.In the entire food chain or in the predators, the chemical toxic will gets increased.It makes all the animals to get more impact and also it makes the food chain to the higher toxic.Biomagnification can be also known as the biological magnification.Also in plants, if a farmer sprays pesticides on the crops which enters the food chain from crops these pesticides enter into the organisms that feed on it.Learn more about Biomagnification,
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What is the major organic product that is obtained from the reaction at the right?
a) cyclohexanol
b) cyclohexene
c) 2-cyclohexene-1-one
d) cyclohexanone
e) 1,3-cyclohexanedione
Answers
The major organic product that is obtained from the reaction is (a) cyclohexanol.
What is a major product?
Chemical reactions take place all around us, including during food digestion in our bodies and the production of light from the sun. Before beginning any chemical processes, it is essential to comprehend physical and chemical changes. A burning candle serves as the best example of a physical and chemical transformation.
The main product of a reaction would be the one that is more stable and hence most likely to form. Propene added electrophilically to HBr would be one instance.
The major organic product that is obtained from the reaction is (a) cyclohexanol. The ketone is reduced to alcohol via proper reagents and conditions.
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Rubidium-86 (86Rb) undergoes beta decay. A 9.52 x 10^−5 mol sample of 86Rb emits 8.87 x 10^16 beta particles in one hour. Calculate the half-life (in hours) for 86Rb
Answers
The half-life (in hours) for 86Rb is mathematically given as
half-life= 447.1 hr
This is further explained below.
What is the half-life (in hours) for 86Rb?Generally, the equation for k is mathematically given as
k = (1/t)ln(a/x)
Where
No of mol of Beta particle
β= (8.87*10^16/(6.023*10^23))
β = 1.47*10^-7 mol
Therefore
k = (9.52*10^-5)-(1.473*10^-7)
= 9.50527*10^-5 mol
Hence
k = (1/1)ln((9.52*10^-5)/(9.50527*10^-5))
k = 0.693/t0.5
t0.5=half lifetime
t0.5= 0.693/(0.00155)
half-life= 447.1 hr
In conclusion, the half-life (in hours) for 86Rb
half-life= 447.1 hr
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Describe (in words )the relationship between the distance and time2 as the duster accelerated down the slope (with its smooth surface in contact with the truck)
Answers
Distance and time have a direct relationship, meaning the value of one directly affects the value of the other.
Time and distance are directly related to one another. Direct relationship means that if one changes, the other changes as well. Conversely, if one changes, the other changes as well.
We can infer that there is a direct relationship between distance and time if it takes more time to travel a distance that is a huge amount, while it takes less time to travel a distance that is short.
When gravity is the only force affecting an object, freefall occurs. The length of time an object spends falling is proportionate to its distance since the acceleration of gravity on Earth is constant.
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7.39 mmol of base was used when titrating 432 mg of a monoamine monocarboxylic amino acid from ph 0.8 to 12.0. what is the name of the amino acid?
Answers
Answer:
Valine
Explanation:
what doed 2n2 denote ? Explain it with the help of two example.
Answers
The formula 2n^2 is used to find the number of electrons in a shell.
What does 2n^2?Atoms are composed of electrons in shells in addition to the protons and the neutrons in the nucleus. Electrons are known to be found in shells. The shells are arranged in order of increasing energy; KLMN. It is often important to find the number of electrons that could be found in a particular shell of an atom.
We can find the number of electrons in a shell or energy level by the use of the formula 2n^2. We know that the shells KLMN corresponds to 1, 2, 3, 4 ...
Using this model, the electrons in the K shell are 2(1)^2 = 2
Electrons in the L shell are; 2(2)^2 = 8 etc
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Calvin was being bullied by a coworker. That night, he dreamed that the coworker had a terrible accident. According to sigmund freud, his dream was most likely an example of?.
Answers
According to Sigmund Freud, his dream was most likely an example of wish fulfillment when he dreamt about the coworker having a terrible accident.
What is Wish fulfillment?This is defined as the process in which a desire is fulfilled through and involuntary thought process such as dreams etc.
Sigmund Freud is regarded as the father of psychoanalysis which was used to treat various types of mental illnesses and he was involved in the study of wish fulfillment.
Wish fulfillment is the process in which desire is fulfilled through involuntary process such as dream and in this scenario, Calvin was being bullied by a coworker and he night he dreamed that the coworker had a terrible accident which therefore means that he depicted wish fulfillment in this category.
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Explain in four sentences or less why menthone and isomenthone do not separate in capillary electrophoresis.
Answers
Capillary electrophoresis separates charged species according to their charge and size. Since menthone and isomenthone are stereoisomers, they have the same size and charge. As a result, they do not separate because they migrate at the same speed on electrophoresis.
Capillary electrophoresis is an analytical technique that separates ions based on their electrophoretic mobility using an applied voltage. Electrophoretic mobility depends on molecular charge, viscosity, and atomic radius.
Menthone is a mint-flavored monoterpene that is naturally present in many essential oils. l-Menthone is the most common of the four possible stereoisomers in nature, shown to the right. It is structurally related to menthol and has a secondary alcohol instead of a carbonyl.
Because of the same charge and size they do not separate through because they migrate at the same speed on electrophoresis.
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What is the net force and direction of the block?
Answers
Answer: The object moves downward towards gravity
Explanation:
Gravity exerts a force of 600 N which is greater than the force exerted by air which is 200 N. Hence the object moves in the direction of the greater force applied. The net force is 600- 200= 400N.
Ivr Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell
Answers
The levels of organization from largest to smallest are - organism, organ system, organ, tissue, and cell.
Therefore, option (D) is correct.
The cell is the basic or fundamental unit of life of an organism.
A Group of cells with similar shapes and functions combines to form tissues.
Then the tissues organize to form organs.
A group of organs with similar functions combine to form an organ system.
A group of organ systems organizes to form an organism.
Hence, the correct order of levels of organization from largest to smallest is - organism, organ system, organ, tissue, and cell.
Option (D) is correct.
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A molecule with 4 single bonds (and any number of lone pairs) could have which type of molecular geometry?
Answers
A molecule with 4 single bonds (and any number of lone pairs) could have the tetrahedral geometry.
For example carbon(IV) chloride (CCl₄). There are four single covalent bonds between one carbon atom and four chlorine atoms (see the picture below).
Carbon has sp3 hybridization (hybridize one s-orbital and three p-orbitals) and four chlorine atoms are positioned symmetrically as corners in a tetrahedral configuration. Because of symmetrical geometry, carbon tetrachloride is non-polar molecule.
Electron configuration of carbon: ₆C 1s² 2s² 2p².
Electron configuration of chlorine: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵.
The ammonium ion has exactly the same shape as methane, because it has exactly the same electronic arrangement, ammonium ion is tetrahedral (sp3 hybridized).
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The diameter of the he atom is approximately 0.10 nm. calculate the density of the he atom in g/cm3 (assuming that it is a sphere).
Answers
The density of the He atom is 12.69 g/cm³.
d(He) = 0.1 nm = 1 × 10⁻⁸ cm; a diameter of helium atom
V(He) = 1/6 × (1 × 10⁻⁸ cm)³ × 3.14
V(He) = 5.23 × 10⁻²⁵ cm³; volume of helium atom
m(He) = 4 amu; mass of helium atom
d(He) = m(He) / V(He)
d(He) = 4 × 1.66 × 10⁻²⁴ g / 5.23 × 10⁻²⁵ cm³
d(Cr) = 12.69 g/cm³; density of the helium atom
Volume of the helium is the measure of the amount of space occupied by the helium.
Diameter or the atomic radius of an atom is a measure of the size of that atom. It is distance from the center of the nucleus to the outermost isolated electron of an atom.
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calculate ionisation energy of hydrogen
Answers
2.18 x 10⁻¹⁸ J/atom is the ionisation energy of hydrogen.
The minimum energy required by an electron in an atom or ion to come out from the control of the nucleus is known as ionisation energy. It measures the capability of an element which can take part in a chemical reaction by accepting or donating electrons. It is expressed in electron volt (eV).
It will help in the understanding of the reactivity of the chemical compounds.
For Ionisation energy formula
1/λ =R[1/n₁²-1/n₂²]
n₁=1 n₂= ∞
R=1.0974 x10¹⁷m⁻¹
1/λ =1.0974 x10¹⁷m⁻¹x[1/1-0] ( 1/ ∞=0)
λ=9.116x10⁻⁸m
E=hc/λ
h=6.63x10⁻³⁴Js c=3x10⁸m/s λ = 9.116x10⁻⁸m
E=(6.63x10⁻³⁴Js x 3x10⁸m/s) ÷ 9.116x10⁻⁸m
E=2.18x10⁻¹⁸J/atom.
Ionisation energy of Hydrogen is 2.18x10⁻¹⁸J/atom.
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Law of Conservation of Mass Practice
1. 3Na + Cl₂ → 3NaCl
30g ? 76g
What is the mass of Cl₂?
What are the reactants?
What are the products?
Are the reactants elements or compounds?
Is the product an element or compound?
Answers
2. The reactants are Sodium, Na and Chlorine, Cl2
3. The product is just NaCl, or salt
4. The reactants both are just elements
5. The final product is sodium chloride, an ionic compound, this is also known as salt commonly.
What is the ph of a 0.0100 m sodium benzoate solution? kb (c7h5o2-) = 1.5 x 10-10
Answers
The pH of a 0.0100 M sodium benzoate solution is 8.09.
c(C₆H₅COONa) = 0.0100 M; concentration of the salt sodium benzoate.
Balanced chemical equation for reaction of benzoate ion (from the salt sodium benzoate) with water:
C₆H₅COO⁻(aq) + H₂O ⇄ C₆H₅COOH(aq) + OH⁻(aq)
Kb = 1.5 × 10⁻¹⁰; constant of base
Kb = c(C₆H₅COOH) × c(OH⁻) / c(C₆H₅COO⁻)
c(C₆H₅COOH) = c(OH⁻) = x
1.5 × 10⁻¹⁰ = x² ÷ 0.0100 M
x = c(OH⁻) = 1.225 × 10⁻⁶ M
pOH = -log c(OH⁻)
pOH = -log (1.225 × 10⁻⁶ M)
pOH = 5.91
pH = 14 - 5.91
pH = 8.09
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A theory:
a. Must be constantly tested and revised
b. Should not be consistent with pre-existing theories
c. Should never be tested
d. Both A and B
Answers
Answer:
a. Must be constantly tested and revised
Explanation:
theories should constantly be tested and revised.
At a pressure of 476 kPa, the volume of a gas is 6.00cm3. Assuming the temperature remains constant, what will be the pressure when the volume is 3.50 cm3?
Answers
The pressure when the volume is 3.50 cm³ is 816 kPa
What is the relationship between the volume and pressure of a gas at constant temperature?Pressure and volume of a gas have an inverse relationship at constant temperature
The relationship between the volume and pressure of a gas at constant temperature is given by the equation of Boyle's law:
P₁V₁ = P₂V₂P₁ = 476 kPa
V₁ = 6.00 cm³
V₂ = 3.50 cm³
P₂ = P₁V₁/V₂
P₂ = 476 * 6 /3.50
P₂ = 816 kPa
In conclusion, pressure and volume are inversely related at constant temperature.
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Which quantity is held constant when working with Boyle's, Charles's, and Gay-Lussac's laws?
O volume
O moles
O pressure
O temperature
Answers
Answer:
moles
Explanation:
for these three principles, the volume, pressure and temperature of the particles will change whereas the moles will stay constant because the number of the particles does not change throughout the experiment.
Moles is held constant when working with Boyle's, Charles's, and Gay-Lussac's laws and the correct option is option 2.
What are Gas Laws?All gases generally show similar behaviour when the conditions are normal. But with a slight change in physical conditions like pressure, temperature or volume these show a deviation.
The gas laws are a group of laws that govern the behaviour of gases by providing relationships between the following:
The volume occupied by a gas.The pressure exerted by a gas on the walls of its container.The absolute temperature of the gas.The amount of gaseous substance (or) the number of moles of gas.Therefore, Moles is held constant when working with Boyle's, Charles's, and Gay-Lussac's laws and the correct option is option 2.
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A compound has an empirical formula of ch2o with a molar mass of 60.0 g/mol. what is the molecular formula of the compound?
Answers
The molecular formula becomes [tex]C_{2}H_{4}O_{2}[/tex]
A compound is a substance made of two or more elements in fixed proportions.
the empirical formula tells us the relative ratios of different atoms in a compound. The ratios hold true on the molar level as well. Thus, [tex]H_{2}O[/tex] is composed of two atoms of hydrogen and 1 atom of oxygen.
The empirical formula is [tex]C_{}H_{2}O[/tex]
Molar mass is 60 g/mol
x*C + 2x*H + x*O = 60
Where x is the number of atoms of the element
12*x + 2*x + 16*x =60
30*x = 60
x = 60 / 30
x= 2
Thus the molecular formula becomes C2H4O2
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The amount of energy that must be absorbed or lost to raise or lower the temperature of 1gram of liquid water by 1°c.
Answers
The amount of energy that must be absorbed or lost to raise or lower the temperature of 1 gram of liquid water by 1°C is 1 calorie.
A calorie (cal), or a small calorie, is the amount of energy needed to heat one gram of water by one degree Celsius. It is used to express the amount of energy released in a phase change or chemical reaction.
One small calorie is approximately 4.2 joules.
A calorie is a unit of energy.
A calorie was originally part of the metric system (SI), but now it is replaced with the joule (J).
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What happens to the pressure of an ideal gas if its volume is doubled and its kelvin temperature is halved, assuming the moles of gas does not change?
Answers
By ideal gas approximation, the final pressure is 4 times greater than the initial pressure.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
V2 = 2V1
T2 = 1/2 . T1
n1 = n2 = n
When the initial and final temperature is the same, we can use the ratio of pressure as
P1 / P2 = (n1 . R . T1 / V1) / (n2 . R . T2 / V2)
P1 / P2 = (n . R . T1 / V1) / (n . R . (1/2.T1) / 2V1)
P1 / P2 = 4
Hence, the final pressure is 4 times greater than the initial pressure.
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