Question 4 of 25
What is a pattern in nature?
A. A set of measurements that answers a scientific question
OB. An event that occurs over and over
OC. A collection of scientific theories that helps scientists understand
the world
OD. An arrangement of objects that are in predictable places
Answers
The pattern in nature is option B. An event that occurs over and over.
The pattern in nature is seen in regularities of shapes found inside the natural international. these styles recur in exceptional contexts and can now and again be modeled mathematically. natural styles include symmetries, timber, spirals, meanders, waves, foams, tessellations, cracks, and stripes.
Patterns are normal and intelligible bureaucracies or sequences that may be observed at some stage in nature. clinical questions may be generated whilst scientists have a look at a pattern of activities or while something does now not healthy a longtime sample. Scientists can use patterns to classify gadgets or phenomena into corporations.
Learn more about nature here:-https://brainly.com/question/24514288
#SPJ9
Related Questions
NaBr (aq) + _H3PO4 (aq) → _Na3PO4(aq) + _HBr (aq)
3,1,1,3
1,2,3,1
3,1,3,1
1,1,3,3
Answers
Answer:
A 3,1,1,3
Explanation:
hope the picture help u to understand :)
I
A chemical blank
occurs when some substances
change chemically to other substances
Answers
Answer:
its a chemical Reaction
Explanation:
Which is the correct chemical symbol for this atom of helium?
Answers
100 POINTS PLS HELP MUST SHOW WORK
4. . A common laboratory technique is to collect gas from a chemical reaction by what is called water
displacement. In water displacement, the volume of the gas collected is equal to the volume of
water that is displaced from the container. Unfortunately, the gas collected is not entirely limited
to the gas released from the reaction. Because of the presence of water, a small amount of water
vapor contaminates the gas sample. What is the pressure of the gas produced in the reaction if the
atmospheric pressure at 25°C is 775 mmHg?
Answers
Answer: Because the gas is collected over water, it is not pure but is mixed with vapor from the evaporation of the water. Dalton’s law can be used to calculate the amount of the desired gas by subtracting the contribution of the water vapor.
In order to solve a problem, it is necessary to know the vapor pressure of water at the temperature of the reaction (see Table below). The sample problem illustrates the use of Dalton’s law when a gas is collected over water.
Vapor Pressure of Water (mmHg) at Selected Temperatures (°C)
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70
4.58 6.54 9.21 12.79 17.54 23.76 31.82 42.18 55.32 71.88 92.51 118.04 149.38 187.54 233.7
Sample Problem: Gas Collected by Water Displacement
A certain experiment generates 2.58 L of hydrogen gas, which is collected over water. The temperature is 20°C and the atmospheric pressure is 98.60 kPa. Find the volume that the dry hydrogen would occupy at STP.
Step 1: List the known quantities and plan the problem.
Known
Unknown
The atmospheric pressure is converted from kPa to mmHg in order to match units with the table. The sum of the pressures of the hydrogen and the water vapor is equal to the atmospheric pressure. The pressure of the hydrogen is found by subtraction. Then, the volume of the gas at STP can be calculated by using the combined gas law.
Step 2: Solve.
Now the combined gas law is used, solving for
, the volume of hydrogen at STP.
Step 3: Think about your result.
If the hydrogen gas were to be collected at STP and without the presence of the water vapor, its volume would be 2.28 L. This is less than the actual collected volume because some of that is water vapor. The conversion using STP is useful for stoichiometry purposes.
Summary
The vapor pressure due to water in a sample can be corrected for in order to get the true value for the pressure of the gas.
Review
Why is gas collected over water not pure?
Why would we want to correct for water vapor?
In a lab, 2.20 L of gas is collected over water at a temperature of 30°C and a total pressure of 735.43 mmHg. Find the volume that the dry nitrogen of gas would occupy at STP.
Explore More
Use the resource below to answer the questions that follow.
What process is used to refine aluminum from its ore bauxite?
A. Electrolysis
B. Electrolytic oxidation
C. Voltaic cell processing
D. Smelting
Answers
The correct option for the process used to refine aluminum from its bauxite ore is option D.
D. Smelting
The reason why smelting is the correct choice is as follows;
Bauxite is the aluminum ore from which alumina, also known as aluminum
oxide, Al₂O₃, is produced. Bauxite is extracted from the topsoil regions of
some subtropical and tropical regions, and the Bayer process is primarily
then used to produce alumina from the bauxite.
Aluminum is produced from the alumina by an aluminum smelting process
known as the Hall—Heroult electrolytic process which involves the use of a
carbon anode and direct current to produce aluminum by reducing the
aluminum oxide
Learn more about smelting process here:
https://brainly.com/question/3444206
A 5.35 kg block of magnesium is used to offer cathodic protection to a steel pipeline. It is determined that a
constant current of 0.75 A flows from this magnesium sacrificial anode to the pipeline, preventing oxidation of
iron in the steel. In other words, the steel won't rust so long as the more reactive magnesium metal
preferentially gives up electrons.
The relevant oxidative half-reaction is Mg(s) = Mg^+2 (aq) + 2e-
Based on this mass and this constant current, how many days will this magnesium block offer cathodic
protection of the pipeline? Please round your answer to a whole number of days.
Answers
The time (in days) required for the magnesium block to offer cathodic protection of the pipeline is 656 days
How do i determine the time?First, we shall obtain the charge for 5.35 Kg of magnesium, Mg. Details below:
Mg²⁺ + 2e —> Mg
Molar mass of Mg = 24.3 g/mol Mass of Mg from the balanced equation = 1 × 24.3 = 24.3 gNumber of faraday = 2 F = 2 × 96500 = 193000 CFrom the balanced equation above,
24.3 g of magnesium, Mg required 193000 C of electricity
Therefore,
5.35 Kg (i.e 5350 g) of magnesium, Mg will require = (5350 × 193000) / 24.3 = 42491769.55 C of electricity
Now, we shall determine the time required. This can be obtained as follow:
Quantity of electricity (Q) = 42491769.55 CCurrent (I) = 0.75 ATime required (t) = ?Q = It
42491769.55 = 0.75 × t
Divide both side by 0.75
t = 42491769.55 / 0.75
t = 56655692.73 s
Divide by 86400 to express in days
t = 56655692.73 / 86400
t = 656 days
Thus, the time required is 656 days
Learn more about time:
https://brainly.com/question/24185898
#SPJ1
List all possible values of the angular momentum quantum number l for an electron in the L(n=2) shell of an atom.
Answers
In quantum mechanics, the angular momentum quantum number "l" defines the shape of the atomic orbital. The l value is an integer ranging from 0 to (n-1) where n is the principal quantum number.
Therefore, for an electron in the L(n=2) shell of an atom, the possible values of the angular momentum quantum number l would range from 0 to 1, since n=2.
This is because the L shell is the second shell, which has n=2. Therefore, it can have subshells with l=0 and l=1, also known as the s and p subshells respectively.
The angular momentum quantum number also has an effect on the energy of the electron, with higher l values having higher energy.
Thus, the possible values of the angular momentum quantum number l for an electron in the L(n=2) shell of an atom are l=0 and l=1.
To know more about quantum mechanics refer here: https://brainly.com/question/23780112#
#SPJ11
At a temperature of 273K, a 400 mL gas sample has a pressure of 760 mm Hg. If the pressure is changed to 380 mmHg, at which temperature will this gas have a volume of 551mL?
Answers
Answer: The correct answer is 188.03K.
Explanation:
As a result, the gas sample will have a volume of 551mL at a temperature of 188.03K.
Why Leaves Change Color in the Fall
Answers
Answer:
Chlorophyll Breaks Down
Explanation:
But in the fall, because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves part of their fall splendor.
Answer GREEN CHLOPHYL GOES AWAY
Explanation:
THE RDS, YELLOW, BROWNS, AND PURPLES OF FALL LEAVES ARE TIN THE LEAVES ALL SPRING AND SUMMER. IN THE FALL, THE GREEN CHLOROPHYL WHCIH HAS COVERED THE OTHER COLORS, GOES AWAY AND WE SEE THE OTHER COLORS THAT WERE ALWAYS PRESENT
The constant composition of sugar, a compound containing carbon, hydrogen and oxygen, is 40.0% carbon and 6.67% hydrogen. what is the percentage of oxygen?
Answers
Answer:53.33
Explanation:100-(40.0+6.67)
53.3%
HELLLLLLPPPPP
What type of circuit does this figure represent?
an open series circuit
an open parallel circuit
a closed parallel circuit
a closed series circuit
Electricity and magnetism
Answers
Answer:
a closed series circuit
Answer:
An open series circuit
Explanation:
I'm late but for future people...
I took the test.
In the illustration, which solute will dissolve first?
00.0
00.0
tanka
tank
Solute in Tanks A and B will dissolve at equal rates.
Solute in Tonk Awill dissolve first
Soluten Tork B wil dissolves
Answers
The first to dissolve is the solute in tank B. The amount of a substance that dissolves in a specific solvent concentration at a specific temperature is known as its solubility.
Which phase of the dissolving process is the first?The introduction of a solute to a solvent is the first stage in the dissolving process. The molecules of these two substances begin to interact, causing the solute molecules to disperse and become encircled by solvent molecules.
Which of the following three compounds dissolves in water?In water, salt, sugar, and coffee all dissolve. They disintegrate quickly. They typically dissolve more rapidly and completely in hot or warm water. Even very hot water won't be able to dissolve sand or pepper.
To know more about temperature visit:
https://brainly.com/question/14633960
#SPJ1
Question 6 of 10 What is the function of mitochondria? O
A. The mitochondria use sugars as fuel to produce energy.
B. The mitochondria direct the cell's activities and hold its DNA.
C. The mitochondria surround the cell and control which materials come into and out of the cell.
D. The mitochondria use sunlight to produce sugars. SUBE
Answers
Answer:
A. The mitochondria use sugars as fuel to produce energy.Explanation:
The most prominent function of mitochondria is to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP), through respiration and using sugar as fuel, and to regulate cellular metabolism .
Which of the following processes are spontaneous? (Select all that apply.)
a. Average car prices increasing.
b. A soft-boiled egg becoming raw.
c. A satellite falling to Earth.
d. Water decomposing to H
2
and O
2
at 298
K
and 1
a
t
m
.
Answers
To determine whether a process is spontaneous or not, we can consider the concept of Gibbs free energy (ΔG). A process is spontaneous if the Gibbs free energy change (ΔG) is negative, indicating a tendency for the process to occur spontaneously without the need for external influence.
Average car prices increasing:
This process is not spontaneous as it goes against the common understanding of market dynamics. The increase in car prices would require external factors or influences, such as inflation, changes in supply and demand, or other economic factors.
A soft-boiled egg becoming raw:
This process is not spontaneous as it would require external influences or interventions to change the state of the egg from soft-boiled to raw. It involves reversing a previous cooking process, which is not a natural tendency.
A satellite falling to Earth:
This process is spontaneous. The falling of a satellite towards Earth is a result of the force of gravity, and objects falling under the influence of gravity is a natural tendency. This process does not require any external intervention to occur.
Water decomposing to H2 and O2 at 298 K and 1 atm:
This process is not spontaneous under standard conditions. The decomposition of water into hydrogen gas (H2) and oxygen gas (O2) requires an input of energy, typically in the form of electrolysis or high temperatures. It does not occur spontaneously at standard conditions.
Learn more about Gibbs free energy here ;
https://brainly.com/question/13795204
#SPJ11
(c) Write a chemical equation for the reaction between sodium and fluorine.
Answers
The chemical reaction will be NaF
Answer:
2Na + F_2
Here Sodium is taken in solid form and Fluorine is taken as gaseus
After what part of the cell cyle does the cell begin interphase?
A.anaphase
B.prophase
C.cytokinesis
Answers
Explanation:
The prefix inter- means between, reflecting that interphase takes place between one mitotic (M) phase and the next. Image of the cell cycle. Interphase is composed of the G1 phase (cell growth), followed by the S phase (DNA synthesis), followed by the G2 phase (cell growth).
Read the excerpt from A History of Women’s Suffrage by Stanton, Anthony, and Gage.
Another writer asserts that the tyranny of man over woman has its roots, after all, in his nobler feelings; his love, his chivalry, and his desire to protect woman in the barbarous periods of pillage, lust, and war. But wherever the roots may be traced, the results at this hour are equally disastrous to woman. Her best interests and happiness do not seem to have been consulted in the arrangements made for her protection. She has been bought and sold, caressed and crucified at the will and pleasure of her master. But if a chivalrous desire to protect woman has always been the mainspring of man's dominion over her, it should have prompted him to place in her hands the same weapons of defense he has found to be most effective against wrong and oppression.
Which statement paraphrases the authors’ argument?
Throughout history, men have strived to protect women through chivalrous action and guardianship.
Women have always been subservient to men because they have needed protection during war and pillage.
Men have not been successful protecting women because they have not given women the power to protect themselves.
During times of war, men and women rely on one another for defense, and they each have weapons for battle.
Answers
Answer:
C
Explanation:
Took the test
In her book A Vindication of the Rights of Women, British author Mary Wollstonecraft advocated that women should be treated with the same respect and decency as men, particularly when it comes to education. Thus, option C is correct.
What Women’s Suffrage by Stanton, Anthony, and Gage?A Vindication of the Rights of Woman (1792), a groundbreaking feminist text, asserts that girls should be given the same privileges as males.
So that they might become outstanding husbands, mothers, and laborers in addition to being educated to be frivolous and inept by the educational system.
Women should be given the same opportunities as men, and women share the same capacity for reasoning at birth. Women should have the same rights to influence, expertise, and power in society as men do.
Therefore, Men have failed in their attempts to safeguard women because they have not given them the means to do so.
Learn more about Women’s here:
https://brainly.com/question/2975708
#SPJ6
In an exothermic the change in enthalpy is usually
Positive, because the potential energy of the reactants is higher than the potential energy of the products
Neutral, because the potential energy of the products and reactants cancel each other out.
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Positive, because the potential energy of the reactants is lower than the potential energy of the products
Answers
Answer:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Explanation:
Exothermic reaction is a reaction in which heat is released to surrounding. This is due to the fact that the heat content of the reactant is higher than the heat content of product thus producing a negative enthalpy change (ΔH) i.e
Enthalpy change = Heat of product – Heat of reactant
ΔH = Hp – Hr = negative
Considering the options given in the question above, the correct answer is:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone. Use the information from the diagram to answer. In which crash did the cone experience a stronger force? How do you know?
Answers
The crash where the cone experience a stronger force is option D because: Crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Does it take a stronger force to slow something down?The ball is drawn back to Earth by gravitational force. The ball returns to Earth as a result of friction. The ball is forced back toward Earth by magnetic force.
A puck's velocity changes when a player makes contact with it when it is still. He causes the puck to speed up, in other terms. The hockey stick's force, which causes the acceleration, is responsible. The velocity grows as long as this force is in motion.
Therefore, the force applied to an object must be larger than what is required for a progressive slowing down if the object must be slowed down quickly. For instance, a bicycle's brakes will slow or stop it more quickly the more force is given to it.
Learn more about Force from
https://brainly.com/question/12785175
#SPJ1
See full question below
After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone.
Use the information from the diagram to answer.
In which crash did the cone experience a stronger force? How do you know?
answer choices
There was no force on the cone. In both crashes, only the hockey puck experienced a force.
The diagram doesn’t tell you anything about the force on the cone. It only gives information about the force on the pucks.
It was the same force in both crashes; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.
Crash 1; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Calculate the maximum β - energy in the decay of
14
C to
14
N. The mass of
14
C is 14.003241u; the mass of
14
N is 14.003074u
Answers
Question id : 33544103
Answer:
To calculate the maximum β-energy in the decay of carbon-14 (14C) to nitrogen-14 (14N), we need to use the mass difference between the initial and final nuclei. The β-decay process involves the conversion of a neutron into a proton, emitting a β-particle (electron) and an electron antineutrino.
The mass difference (∆m) between 14C and 14N is given by:
∆m = mass(14C) - mass(14N)
= 14.003241u - 14.003074u
= 0.000167u
The β-energy (Eβ) is related to the mass difference (∆m) by Einstein's mass-energy equivalence equation: E = ∆mc^2, where c is the speed of light.
Eβ = ∆m * c^2
Now, we need to convert the mass difference (∆m) from unified atomic mass units (u) to kilograms (kg) before using it in the equation. The conversion factor is approximately 1.66053906660 × 10^−27 kg/u.
∆m_kg = ∆m * (1.66053906660 × 10^−27 kg/u)
Next, we'll calculate the β-energy by substituting the values into the equation:
Eβ = ∆m_kg * c^2
The speed of light (c) is approximately 2.998 × 10^8 m/s.
Eβ = ∆m_kg * (2.998 × 10^8 m/s)^2
Let's perform the calculations:
∆m_kg = 0.000167u * (1.66053906660 × 10^−27 kg/u)
≈ 2.77273363362 × 10^−29 kg
Eβ = (2.77273363362 × 10^−29 kg) * (2.998 × 10^8 m/s)^2
≈ 2.49344368869 × 10^−13 J
The maximum β-energy in the decay of 14C to 14N is approximately 2.493 × 10^−13 Joules.
To know more about β - energy visit:
https://brainly.com/question/33544103
#SPJ11
1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed
over the opening. The bottle with the balloon is then placed in very hot water and the balloon inflated. Why
did the balloon inflate?
Answers
Answer:
hot air rises and expanded the balloon
Explanation:
thats it.
hi too all that read this sub 2 to jelly
Answers
Answer:
I already am
Explanation:
Which of the following statements regarding cytoskeletal filaments is FALSE? Microtubules will rapidly disassemble in response to a drop in the ATP concentration. G-actin monomers and alpha-tubulin/beta-tubulin dimers assemble into filaments in their ATP-bound and GTP-bound forms, respectively. Microtubules are stabilized by microtubule-binding proteins, such as Tau. Actin-binding proteins allow F-actin to assemble in cells in many different ways. Hydrolysis of ATP and GTP changes the conformation of the subunits once they are incorporated into actin filaments and microtubules, respectively. Which is NOT a general function of the cellular cytoskeleton? Regulation of intracellular transport Regulation of cell motility and cellular contraction Structural support for the cell Separation of the chromosomes during mitosis Assembly of DNA into chromatin
Answers
The first statement regarding the cytoskeletal filaments is False. This is due to the fact that the microtubules disassemble in response to the GTP drop. Regulation of intracellular transport is not a function of the cellular cytoskeleton. Option A is correct.
The Cytoskeleton is a large network made up of protein fibers and other molecules. It gives the body's cells their shape and structure. The Cytoskeleton also helps to form organelles inside the cell and other substances in the cell's fluid.
In addition to the microtubules, the cell’s cytoskeleton is composed of microfilaments, intermediate filaments, and microtubules. The network of microtubules is responsible for the growth and movement of cells.
To learn more about microtubules, refer to the link:
https://brainly.com/question/32228632
#SPJ4
the radiative balance between incoming and outgoing energy is moderated by the _____.
Answers
The radiative balance between incoming and outgoing energy is moderated by the Earth's atmosphere, particularly by the presence of greenhouse gases such as carbon dioxide, methane, and water vapor.
These gases trap outgoing radiation and prevent it from escaping into space, leading to a buildup of heat in the lower atmosphere and at the Earth's surface. This phenomenon is known as the greenhouse effect and is a major contributor to global warming.
The radiative balance is a delicate and complex system that is influenced by many factors, including solar radiation, cloud cover, and land use changes, as well as human activities such as burning fossil fuels and deforestation.
Understanding and managing the radiative balance is essential for mitigating the impacts of climate change and ensuring a sustainable future for our planet.
To know more about radiative balance , refer
https://brainly.com/question/30296599
#SPJ11
Which is the stronger acid- sulfuric or ethanoic? What is the evidence for this?
Please answer quickly
Answers
Answer:
Sulfuric acid
Explanation:
Sulfuric acid is stronger than ethanoic acid because H+ ions or proton totally ionise in sulfuric acid (H2SO4) whereas in ethanoic acid (CH3COOH) H+ ion partially ionises. The resultant anion of sulfuric acid (HSO4-) is more stable than anion of ethanoic acid (CH3COO-).
So, ethanoic acid is a weak electrolyte and is less stronger than sulfuric acid.
Hence, the correct answer is sulfuric acid.
3. The hydroxide-ion, [OH-], concentration in a detergent solution is 1.0 x 10-3 M. What is [H+] concentration in the detergent solution?
A) 1.0 x 10^-11 M.
B) 1.0 x 10^-9 M.
C) 1.0 M
D) 0.001 M
Answers
Answer:
c
Explanation:
h
which of the following scenarios describe the appropriate effects on equilibrium price and quantity due to a decrease in supply while holding everything else constant?
Answers
When holding everything else constant, a decrease in supply has the following effects on equilibrium price and quantity:
Equilibrium price will riseEquilibrium quantity will fall.The law of supply states that as the price of a good or service rises, the quantity supplied rises, ceteris paribus, and vice versa. When there is a decrease in supply, it indicates that the supply curve has shifted leftward. This causes a decrease in the quantity supplied at each price level, resulting in a higher price for the given quantity of the good or service.
In conclusion, when there is a decrease in supply while everything else is constant, equilibrium price will increase and equilibrium quantity will decrease.
To know more about law of supply, refer to the link below:
https://brainly.com/question/33438816#
#SPJ11
Unpolarized light is passed through three successive Polaroid filters, each with its transmission axis at 45.0° to the preceding filter. What percentage of light gets through? (Give your answer with three significant figures).
Answers
The percentage of light that gets through Unpolarized light is 12.5%
A light wave that is vibrating in more than one plane is referred to as unpolarized light is called unpolarized light.
The General formula of unpolarized light is:
I transmitted = I0<cos2θ>all angles = ½I0.----------------(1)
Here we have to find I3/Io
Considering the I1 for the taking the value 0° and substitute in equation(1) we get
I1=1/2Io---------(2)
Next, we have to consider another value θ=45°, and substitute in equation(1) we get the I2 value.
I2=I1cos^2(45°-0)
I2=I1cos^2(45°)--------------(3)
Next, consider the last value θ=90° and the substitute in equation(1),we get:
I3=I2cos^2(90°-45°)
I3=I2cos^2(45°)-----------(4)
I3=I2cos^2(45°)
=I1cos^4(45°)
=1/2Iocos^4(45°)
I3/Io=0.125
I3/Io=12.5%
To know more about unpolarized light:
https://brainly.com/question/15286832
#SPJ4
Is USA in the North or South American Plate? I'll mark you as brainliest
Answers
Answer: USA is on the North plate American!
Explanation:
in addition to the distance between two particles what other factor determines the magnitude of the electric force between the particles?
Answers
In addition to the distance between two particles what the other factor that determines the magnitude of the electric force between the particles is the charge.
What is electric force?Electric force is described as repulsive or attractive interaction between any two charged bodies . Just like any other force, electric force impact and effects on any given body are described by Newton's laws of motion.
The electric force between the two particles are calculated through the equation,
F = kQ₁Q₂ / d²
where F is the force, k is a constant called Coulomb's law constant, Q₁ and Q₂ are the charges, and d is the distance. This equation is called the Coulomb's law.
Learn more about electric force at:
https://brainly.com/question/30236242
#SPJ1