Which of the following would most likely cause a chemical reaction to occur at a slower rate?
Answers
Answer:
D
Explanation: When you chill a substance when it is mixed with another substance, ( chilled vinegar mixed with sodium bicarbonate will react slower for instance) it reacts slower do to the molecules slowing down when chilled.
[tex]\huge\boxed{Option D}[/tex]
Solution:a liquid mixture in which the the solute which is in a smaller proportion is uniformly distributed within the the solvent which is the major component is called a solution.
_____________________________________Option AStirring the substance together vigorously:It increases the rate of reaction, because when we stir the solute in the solution, the mixed solute particles are distributed more further than when they are left stationary, making the environment (which surrounds the solute) less concentrated by the dissolved solute thus the rate increases and more solute is mixed.
Option BDissolving the reacting substance in water:No, A reacting substances in water are those which can react with water that are Ionic metal. Water is made of ions [tex]H^+ and OH^-[/tex]. Substances(solute), they mix or dissolve more because Solutes ions interact with the ions of a water(solvent), thus breaking the bonds between the solute and then ions of solute form bond with the ions of water. Thus the rate increases in water.
Option CIncreasing the temperature increases the rate of reaction:No, because by the increase in temperature, the kinetic energy of more molecules of a substance increase which results in reaching the threshold energy(minimum energy required by the molecules to change into product) of more molecules. So less molecules are left with low energy.
Option DDecreasing the temperature decrease the rate of reaction.Yes, the rate of reaction decreases because the molecules are slower and collide less. Less molecules make the effective collisions due to which the kinetic energy of molecules is less, so less molecules make up to the threshold energy. So decrease in temperature lowers the rate of the reaction.
_____________________________________Best Regards,'Borz'Related Questions
What kind of molecule can experience hydrogen bonding?
A. A nonpolar molecule containing a hydrogen atom
B. A molecule with hydrogen bonded to any nonmetal
C. A molecule with hydrogen bonded to O, N, or F
D. Any polar molecule containing a hydrogen atom
Answers
Answer:
Answer is C
Explanation:
C - A molecule with hydrogen bonded to O, N, or F
A molecule with hydrogen bonded to O, N, or F can experience hydrogen bonding. Therefore, the correct option is option C.
A hydrogen atom is attracted to another electronegative atom in a neighbouring molecule when it is connected to a strongly electronegative atom (O, N, or F). This attraction is more powerful than the usual dipole-dipole interactions between polar molecules.
The enormous electronegativity differential between hydrogen and the highly electronegative atom causes hydrogen bonding. The electronegative atom attracts the shared electrons in the covalent link, causing the hydrogen atom to gain a partial positive charge.
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How does the circulatory system work at the tissue level?
Answers
Answer:
Answer. Answer: The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.
Explanation:
Answer:
ME AND YOU HAVE THE SAMEEEE USER BUT LOOK
The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.
Explanation:
What is the molar mass of H2SO4?
Answers
Answer:
98.08g/mol is your answer
Explanation:
hope this helps
Which compound is
ionic?
Answers
Answer:
chemistry
Explanation:
Sunlight heating the sand on the beach on a hot summer day is an example of
a. conduction
b. convection
c. radiation
d. none of these
Answers
Answer:
c
Explanation:
Sunlight heating the sand on the beach on a hot summer day is an example of radiation which is electromagnetic radiation.
What is electromagnetic radiation?
The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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what are the similarities and differences between the crocodile , sheep , and gorilla digestive system?
Answers
Answer: Crocodile is a reptile whereas sheep and gorilla are the mammals.
Explanation:
Crocodile, sheep, and gorilla have alimentary canal in their digestive system. The urea is the common excretory waste.
Mouth is typically large in case of crocodile and comparatively small in sheep and gorilla.
In crocodile more sharp teeth are present as compared to sheep and gorilla for mastication of food and capturing the prey like fish or large animals like zebra.
The crocodile palate is more stronger than sheep and gorilla because it enable it to chew the bones of the prey.
What mass of ethanol will release 410.0 J of heat when it cools
from 32.2°C to 19.1°C?
The specific heat of ethanol is 2.44 J/gºC.
Answers
12.8 g
(Don’t have explanation but it is right on CK-12)
Mention any three ways of making salt. (please help me Asap)
Answers
Rock Salt Mining Method. Morton also uses the second oldest method of producing salt – underground mining. ...
Vacuum Evaporation Method.
8. The following system contains 20.0 psi each of gases A and B in the end bulbs with an evacuated bulb in the centre. Both stopcocks are opened at once. What is the new overall pressure in the system?
I literally have no idea how to even start this, I know that the answer is 13.3 psi, but I don't have any clue why or how to get there.
Answers
Answer:
13.3
Explanation:
Before opening the stopcocks you have 40psi in total.
After that, those 40psi will be divided into 3bulbs, so 40/3=13.3psi for the system.
What is one danger associated with the use of hydrogen gas
Answers
Answer:
Topping the list of concerns is hydrogen burns. In the presence of an oxidizer -- oxygen is a good one -- hydrogen can catch fire, sometimes explosively, and it burns more easily than gasoline does.
Answer:
hydrogen burns
hope it helps
what are chiral carbon
Answers
Answer:
A chiral carbon is a carbon bonded to four different groups ( four groups as carbon forms four bonds). The molecules formed are non superimposible on its mirror image.
A gas is produced when 25 g of substance X is mixed into 60 g of solution Z in a beaker. The mass of the solution in the beaker after the reaction is 75 g. What is the mass of the gas released?
(X + Z -> gas + solution)
Answers
mass of the gas = 10 g
Further explanationThe law of conservation of mass :
In a closed / isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.
Reaction
[tex]\tt X+Z\rightarrow gas+solution[/tex]
mass before reaction=mass after reaction
[tex]\tt 25+60=gas+75\\\\gas=25+60-75=10~g[/tex]
A large rift valley can be found along the east coast of Africa. It has been slowly widening over time, and it is now wide enough to contain many large lakes.
Which of these best explains the slow widening of this rift valley over time?
Group of answer choices
Earth's rotation
wind and water erosion
the Moon's gravitational pull
lithospheric plate movement
Answers
Answer:
wind and water erosion
Answer:
C is the answer
Match the term with the definition.
Condensation
Evaporation
Sublimation
Freezing
A) A phase change from a gas to a liquid
B) A phase change from a solid to a gas
C) A phase change from a liquid to a gas
D) A phase change from a liquid to a solid
[Please Hellp!]
Answers
Evaporation goes with C.
Sublimation goes with B.
Freezing goes with D.
What is the connection between the Bohr Model and Atomic emission spectra of elements?
Answers
Explanation:
electrons move arround nucleus in the orbit such as sun in suria system..
Match each form of energy with its correct description.
mechanical
involving the motion of atoms
chemical
involving electrical charges
thermal
involving the position and motion of
an object
electrical
involving energy stored in chemical
bonds
Answers
Answer
involving electrical charges: electrical
involving energy stored in chemical
bonds: thermal
involving the position and motion of
an object: mechanical
involving the motion of atoms: chemical
Explanation:
almost 100 this is right, sorry if this is wrong :)
Chemical: unblocked energy stored in chemical bonds
Thermal: involves the position and motion of an object
Electrical: involving electrical charges
Atoms tend to form compounds because they have an unstable number of ___
A. Protons
B. Isotopes
C. Valence electrons
D.neutrons
Answers
______ have trees with cones.
A. temperate rainforests
B. boreal forests
C. tropical rainforests
D. temperate deciduous forests
Answers
Answer:
D.
Explanation:
In what way do the atoms in the same row of the Periodic Table increase from left to right?
Answers
Answer:
As you move from left to right, the nucleus gains protons. This increases the positive charge of the nucleus and its attractive force on the electrons. At the same time, electrons are added to the atoms as you move from left to right across a period.
Explanation:
A photon has an energy of 2.34x10-28 J. What is its frequency?
Answers
Answer:
f = 3.53×10⁵ s⁻¹
Explanation:
Given data:
Energy of photon = 2.34×10⁻²⁸ J
Frequency = ?
Solution:
h = 6.63 ×10⁻³⁴
Formula:
E = hf
2.34×10⁻²⁸ J = 6.63 ×10⁻³⁴ × f
f = 2.34×10⁻²⁸ J / 6.63 ×10⁻³⁴ Js
f = 0.353×10⁶ s⁻¹
f = 3.53×10⁵ s⁻¹
Tigers and crocodiles are more closely related than tigers and sharks. Which statement about shared characteristics best supports this statement?
Answers
Answer: Crocodiles and tigers both have four legs
Explanation: Even when sharks and tigers are both meat eaters, the question is about similarities between tigers and crocodiles, so D is out. A is about crocodiles and sharks, so it's out also. B suits for sharks too, so it's out too. C is the most suitable answer, because both animals have four legs, which means that they belong to the group of quadrupede animals.
Answer:
Crocodiles and tigers both have four legs
Explanation:
Drag the images into the correct category.
Contact Forces
Noncontact Forces
Answers
Answer:
Where are the categories, we need an image for reference or something to better understand the question
Sea-Floor Spreading1. The arrows on the figure show the ocean floor spreading from the ridge. What are three kinds of evidence scientists have found to support this idea?
A. B. C.
I NEED HELP
Answers
-B
Explanation
PLEASE HELP ASAP
A beach ball has a mass of 5g a volume of 20cm3. What is the object's density?
Answers
Answer:0,25 g/cm3 creo
Explanation:densidad es masa entre volumen
Answer:
0.25 g/cm³
Step-by-step explanation:
As we know
The density is given by
Density = Mass / Volume
Putting the values
Density = 5g / 20 cm³
Density = 0.25 g/cm³
Sorry if wrong I'm not great at math!
what would happen if the
attractive forces between all of the particles
of matter on Earth were equal?
Answers
The magnitude of attractive forces between particles that compose matter determine the state of matter. Hence, if all particles of matter on earth have equal attractive forces, only a single state of matter (solid, liquid or gas) will exist on earth.
Matter exists in three states;
SolidLiquidGasIn solids, there exists the greatest magnitude of attractive forces between particles.
There are weaker inter-molecular attractive forces between liquid particles. However, inter molecular attractive forces are almost non-existent in gases.
The reason for the existence of different states of matter on earth is difference in magnitude of inter molecular attractive forces in each state of matter.
If all particles of matter possess equal attractive forces, only one state of matter will be found on earth; either solid, liquid or gas.
Learn more; https://brainly.com/question/9007693
How does the suns energy contribute to the movement of water in the water cycle?
Answers
Answer:Evaporation
Explanation:
The suns heat speeds the movement of water molecules, until the molecules move fast enough that they jolt out the surface of the water individually. Overtime the water gradually evaporates into water vapor.
Calculate the amount of heat needed to evaporate 235.0 grams of water from 25.0°C to 100.0°C.
Answers
These problems are very hard to do digitally so I would recommend trying to practice these types of problems on paper :)
How many electrons are gained in the half-reaction 02, + electrons — 202-
Answers
Answer:
2
Explanation:
A
Answer: 4!!!
Explanation: j took the quiz!!!
Suzanne has a cat and uses a pet carrier to take her cat to the veterinarian. After a few years, the cat runs away and hides every time Suzanne gets the carrier out. Which best describes the cat's behavior? instinct reflex conditioned imprinting
Answers
Answer:
conditioned
Explanation:
The best term to describe the behavior of the cat is conditioned.
The cat has been conditioned to respond in a specific way to the pet carrier over time due to certain experiences - most likely, unpleasant ones. With repeated unpleasant experience associated with the per carrier, the cat has been conditioned to dislike/fear the pet carrier and thus, the recorded behavior.
Answer:
conditioned
Explanation:
Calculate the gravitational force between two objects when they are 0.75m apart each object has a mass of 5.00kg
Answers
Answer:
0.000000000666863
Explanation:
F = GMm/R²