How does a catalyst increase the rate of a reaction?
A) It decreases the enthalpy change of the reaction.
B) It lowers the potential energy of the reactants.
C) It provides a lower activation energy for the reaction.
D) It raises the potential energy of the products.
Answers
Answer:
C) It provides a lower activation energy for the reaction is the correct answer.
Explanation:
A catalyst increases the rate of the chemical reaction by lowering the activation energy for a reaction.Catalyst is used to increase the reaction rate, it remains unchanged in the chemical reaction and it does not change the equilibrium constant.Activation energy is a minimum amount of energy required to initiate the reaction.Related Questions
how many total carbon atoms are in 4AI2(CO3)3
Answers
Answer:
There are only 12 carbon atoms in that, don't use the other person's answer.
Explanation:
A praying mantis eats a bee.
Tell which type of relationship it is: mutualism, predation, parasitism, competition, or commensalism. Give details on why.
Try for 2 sentences:
I think a praying mantis eating a bee is an example of....
I think this because...
Answers
Answer:
I think a praying mantis eating a bee is an example of predation. I think this because the praying mantis stealthily hunts its preys, like the bee, in order to kill eat for food.
Explanation:
"Predation" refers to the killing of another living organism in order to prolong the life of the "predator" (hunter) and to end the reproductive life of the "prey" (the one being consumed). The praying mantis is popularly known for being a deadly predator because it feeds on several insects (as its prey), including the bees. They are said to also feed on wasps, moths, mice, frogs, rodents and even snakes.
It kills the bees in order to consume them so it can prolong its reproductive life. It then stops the reproductive life of the bees. Clearly, the type of relationship here is "predation."
I think a praying mantis eating a bee is an example of predation.
I think this is because the praying mantis which is a predator consume the prey which is the bee most times in a defensive manner.
Predation is a biological relationship in which a predator kills or consume it's prey.
It's occur majorly in canivorous animals that consume flesh or other animals.
The predators consume the prey as food and as a form of defensive means from been attacked by the prey.
In this relationship, energy is transfered from the prey which is the bee to the praying mantis.
Therefore, the relationship that occur between praying mantis and bee is predation.
Match each letter with the part of the wave it represents in the diagram below.
Answers
See diagram attached
Answer:
A-wavelength, B=amplitude, C=crest, D=trough
Explanation:
Photosynthesis begins when chlorophyll molecules in the plant absorb light energy from the sun. Along with sunlight, CARBON DIOXIDE (CO2)/OXYGEN (O2) and HYDROGEN (H)/WATER (H2O) are also taken in by the plant. Light energy from the sun FUSES/SPLITS water molecules (H2O) into hydrogen (H) atoms and oxygen (O) atoms. Pairs of oxygen atoms combine to form oxygen gas (O2). The oxygen gas (O2) leaves the plant as a WASTE/SUGAR product. The carbon dioxide (CO2) and hydrogen (H) molecules are made into WASTE/SUGARS, which are used by the plant to make energy. Also during this process, light energy from the sun transforms into THERMAL/CHEMICAL energy that is stored in sugars.
Answers
Answer:
The digramatic representation is above
Answer:
I don't see any questions, all I see is a description on Photosynthesis.
Explanation:
What is the identity of the atom shown?
A). Fluorine
B). Neon
C).nitrogen
D).potassium
Answers
Answer:
Option A
Explanation:
The answer to this question is the first option or "fluorine." You can find the amount of protons, neutrons, and electrons by looking at the elements atomic number and mass number. In this case we have the first option fluorine which it's atomic number is nine which is why the element has nine protons, and electrons, and nine neutrons because of it's mass number.
Hope this helps.
Please help me por favor :'(
Answers
Which human activity contributes to the formation of acid rain
Answers
(C) burning fossil fuels such as coal and gasoline.
It also contributes to the formation of smog.
Burning fossil fuels such as coal and gasoline
We know that burning fossil fuels, such as coal and gasoline, is a significant human activity that contributes to the formation of acid rain.
When fossil fuels are burned, they release pollutants into the atmosphere, including sulfur dioxide (SO2) and nitrogen oxides (NOx).
These pollutants can react with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid (H2SO4) and nitric acid (HNO3), which are major components of acid rain.
Therefore the correct answer is
Burning fossil fuels such as coal and gasoline
Our solar system consits of eight planets. Which phrase correctly describes a planet?
A. a large celestial body that is composed of gas and emits light
B. any one of the primary bodies that orbit a star
C. many stars held together by gravity
D. space and all the matter and energy in it
Answers
B. (twenty characters blah blah blah) Have a great day/night!
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
Students were asked to place a mint in their mouths and determine how long it took for the mint to dissolve. The condition of the mint varied in each student group. One group of students were asked to leave a whole mint in their mouth, not moving it around, and let it dissolve. Another group swirled a mint, while the other groups used mints broken into smaller pieces. See the chart for all of the manipulated variable.
Answers
Answer:
The time is likely between 40-80 seconds.
Explanation:
youre welcome
Answer:
The time is likely between 40-80 seconds.
Explanation:
By swirling the mint, this is agitating and creating a higher frequency of collisions between the saliva particles and mint particles, increasing the rate of dissolution. Therefore, the time is likely to be less than the mint cut in half but probably more than the mint when it is in small pieces.
I WILL GIVE YOU BRAINLIST PLS DOOOOOO
Which of these is a characteristic of index fossils?
Found in the topmost rock layer
Found in many layers of the same rock
Have already established relative age
Are limited to a particular geographic location
Answers
Answer: It is the third one.
Explanation:
An index fossil is something that a human can estimate the age of the fossil by looking at it.
Index fossils are distinct in nature and recognisable. It is also widely present across the world. It is abundant and found everywhere.
People use hot air balloons to rise high above the ground and be pushed by air currents from one place to another. The diagram shows a hot air balloon.
A type of chemical reaction, called combustion, takes place between propane and oxygen in the burners.
a. Describe a likely result of this chemical reaction that allows a hot air balloon to rise.
b. Describe a design feature the distance a hot air balloon can travel. Explain your reasoning.
Answers
Fueled by propane cylinders, gas jets produce the hot air that fills the envelope (similar to ones you might use on a portable camping stove).
WorkingSince heated air rises, hot air balloons are functional. with the rest. As though it were floating in water, the balloon rises as a result of this. The balloon naturally starts to slowly deflate if the air is allowed to cool.The molecules in the air start to migrate and spread out as the air within the balloon is heated, which results in a decrease in the air's density. The heated air is pushed below the cooler, surrounding air. the warm air is pushed upward as a result of this.For more information on hot air balloon kindly visit to
https://brainly.com/question/11178349
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Write a summary of what you have learned about how incoming forces and outgoing forces are related (newton's cradle)
Answers
The relationship between incoming and outgoing forces in Newton's Cradle can be understood through the following concepts:
Conservation of Momentum: In a closed system with no external forces, the total momentum before a collision is equal to the total momentum after the collision. In Newton's Cradle, the momentum of the incoming ball is transferred through the stationary balls and eventually to the last ball, which swings outward with a momentum equal to the initial ball's momentum.
Conservation of Energy: Similarly, the total mechanical energy (kinetic and potential) in a closed system remains constant. In the context of Newton's Cradle, the kinetic energy of the incoming ball is transferred through the stationary balls, and eventually to the last ball, which swings outward with kinetic energy equal to that of the incoming ball. Potential energy is also involved as the balls swing and momentarily come to rest at their highest points.
Elastic Collisions: Newton's Cradle demonstrates nearly perfect elastic collisions, wherein both momentum and kinetic energy are conserved. In reality, some energy is lost to heat and sound, making the collisions slightly inelastic. However, the demonstration is still a useful approximation for understanding the transfer of forces.
Force Transfer: The incoming force exerted by the first ball is transmitted through the intervening balls to the last ball without causing any significant movement of the middle balls. This occurs because the balls are very close together and the time taken for the force to be transferred is minimal, allowing the middle balls to remain nearly stationary.
In summary, Newton's Cradle demonstrates the relationship between incoming and outgoing forces through the principles of conservation of momentum and energy, elastic collisions, and force transfer. The device provides a clear visual representation of these fundamental concepts in physics.
How do large storms and strong currents affect the coasts?
Storms and currents bring in warm weather in the coast.
Storms and currents can bring in sediments from other places.
Storms and currents attract animals to live by the coast.
Storms and currents are necessary to produce seashells.
HELPPP
Answers
ctrl c this than ctrl v it in a serch bar its a fun game :) http://agar.rip/play/ this is to https://evoworld.io/play?loc=EU
Draw Bohr diagrams for the following
Answers
example calculation for a.)
N = 39 - P
N = 39 - 19
N = 20
P = 19
How many independent variables can be tested in a controlled experiment? Please HELP!!
Answers
Answer:
One independent variable
Explanation:You should generally have one independent variable in an experiment. This is because it is the variable you are changing in order to observe the effects it has on the other variables.
Answer:
one independent variable
Do you think rayon when burnt will stick to the body like other synthetic fibers?
Answers
Electrical resistance is a measure of resistance to the flow of _?____
pleasee help
Answers
Answer:
Electrical resistance is a measure of resistance to the flow of electric current.
I Hope This Helps!
Part E
There is still some debate about how heat waves in the North are linked to climate change. What are two questions you would ask the researchers in this study about the data?
THIS IS SCIENCE
WILL MARK AS BRAINLIEST WHOEVER GIVES THE CORRECT ANSWER
Answers
2. What are the impacts of heat waves?
3. How does climate change and heat waves have the same signals/signs?
Answer:
Here are some questions that could be asked about the data:
Could the heat wave be attributed to other causes?
Are similar heat waves occurring in areas with similar climates?
How often are heat waves occurring compared to past periods?
Explanation:
Edmentum sample answer
Hope this helps :)
Also pls mark me brainliest
What is the answer to this one????
Answers
Answer:
A. 2-pentyne is the answer.
Before motorized vehicles were invented, what was one of the fastest ways to travel?
idrk why but its for my sci class
Answers
Answer:
horse and cart ig lol
Explanation:
char
I would like help. With this question thanks
Answers
A is incorrect because a solid is so closely packed that the atoms would not be able to move around.
B is incorrect because when atoms are in a liquid, it has enough room to move around in a container.
D is incorrect because gases move very fast and freely not slowly.
Hope this helps✨❤️
25 points! brainliest for correct answer!
what are TWO characteristics of a neutron?
A. found outside the nucleus
B. negative electric charge
C. no electric charge
D. found in the nucleus
Answers
Answer: Your answers are C and D.
Explanation:
Describe three abiotic and three biotic components of an ocean marine ecosystem.
Answers
Answer:
abiotic sand sunlight water currents
biotic fish bacteria jellyfish
pretty sure this is right
because biotic is living and abiotic is nonliving
Boric fish
Is Fossil Fuel OverUse threatening your health
by: Erin Cobb
Summary Paragraph (last sentence MUST conclude) Your first sentence must include the title/author of the article, verb, and central idea
Answers
Answer/Explanation:
Is Fossil Fuel Overuse threatening your health? Pollution that not only can harm health but also foster climate changes. The Overuse of fossil fuel damages our health. For Instance, Burning fossil Fuel increates a carbon dioxide; to much CO_2 is harmful to our health. This Proves that Fossil fuel can harm our health. Burning fossil fuels could lead to developmental delays in children. This tells us it can be very harmful for children. To much Co_2 can cause children to have adhd. In the text it states children exposed to air pollution from fossil fuels have a significantly greater chance of developmental.Fossil fuels burning cause global warning that makes it difficult to grow crops. This reveals that Fossil fuels can be harmful for the environment. Burning fossil fuels can cause extreme weather and it can cause people to lose their homes and lives.
~Lenvy~
Answer:
Ofc fossil fuel overuse threaten my health.
Explanation:
Is Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your health. YESHHHHHHHH.
Please help me with this!
Information needed to answer:
A pharmaceutical spectroscopist places a sample of a pain reliever into a mass spectrometer and obtains data about different compounds within the sample. The image below shows a mass spectrograph of the data. The relative intensity, shown on the vertical axis, indicates the relative amount of each compound in the sample. The m/z (mass to charge) ratio, shown on the horizontal axis, is related to the molecular mass of each compound.
Question:
Describe two observations you can make from the graph. (Graph is below)
As usual, any non-answers will be reported. Thank you!
Answers
Answer:
Explanation:
How many protons are in an atom of oxygen?
6
8
16
24
Answers
Answer:
8 Protons
Explanation:
Answer:
8
Explanation:
You have seen that scientists use a unit called a light-year (l-y) to measure distances in space. One
light-year is equal to the distance light travels in one year. This distance is about 9.5 × 10 15 m.
Another unit, called an astronomical unit (AU), is used for smaller distances, such as distances to planets
in our solar system. One astronomical unit is equal to the distance between Earth and the sun. This
distance is about 1.5 × 10 11 m.
A third unit, called a parsec (pc), is used for distances to stars. The term parsec is based on parallax
and seconds. The seconds in parsec are not units of time. They are measurements of the angle used in
parallax to calculate the distance to a star. One parsec is equal to about 3.1 × 10 16 m.
The star Deneb has been estimated to be 1,500 l-y away from Earth. If you wanted to find out how
many meters away Deneb is, you would multiply the distance in light years by the number of meters in a
light year. To do this calculation in scientific notation, you must convert 1,500 to scientific notation.
1,500 l-y = 1.5 × 10 3 l-y Convert 1,500 to scientific notation.
(1.5 × 10 3 l-y) × (9.5 × 10 15 m/l-y) Multiply that number by the number of meters in a light year.
Next, analyze the units. Multiplying light years by meters per light year gives the unit meters, which is the
unit you are looking for.
(1.5 × 9.5) × (10 3 × 10 15 ) m Rearrange the numbers so that like numbers are grouped together.
(14) × (10 18 ) m Multiply within the parentheses.
1.4 × 10 19 m Rewrite in scientific notation.
1. Which of the three units described is the largest? How can you tell?
2. The nearest star to Earth is about 4.1 × 10 16 meters. Why is the
light-year a better unit than the astronomical unit for expressing
this distance?
3. Beta Centauris is 161 pc from Earth. How many meters is this?
PLS ANSWER ALL OF THESE QUICK LOL
Answers
Answer:
1. Parsec
2. (in explanation)
3. 4.9 x 10 ^18 m or (5 x 10 ^18 m *rounded*)
Explanation:
1. Parsec is the biggest unit of distance
A light year is 3.1 × 10 ^16 m.
A parsec is 3.1 × 10 ^16 m.
An Astronomical unit is 1.5 × 10 ^11 m
2. Light year is a better unit because Astronomical unit is too small of a measurement to calculate the star to earth, light year and parsec would be the most accurate to calculate the distance.
3. Beta Centauris is 161 parsec's away from earth
to calculate this multiply 161 to ( 3.1 × 10^16 m )
161 x 3.1 = 499.1
499.1 x 10 ^16 meters
bring up the exponent by moving the decimal up
4.9 x 10 ^18 m
You *could* round the answer to 5 x 10 ^18 m
help me with this I only have one more
1156 g/L
= ________ kg/mL
Answers
The Answer is 0.001156.
1156 g/L = 1.156 kg/L
Since 1 L is equal to 1000 mL, we can convert kg/L to kg/mL by dividing by 1000:
1.156 kg/L = 1.156/1000 kg/mL
1.156/1000 kg/mL = 0.001156 kg/mL
Therefore, 1156 g/L is equal to 0.001156 kg/mL.
Please help, I don't get what does this means
3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate:
Answers
Answer: hydrogen-carbonate.
Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.
I hope everyone finds this helpful