Answer:
a
Explanation:
3. Answer INCREASE, DECREASE or REMAIN THE SAME. Explain your answer.
a) The density of water _______ as water changes from liquid to steam.
b) As the temperature increases, the rate of diffusion of a gas _______.
c) At constant volume, if the temperature of a gas is decreases, its pressure _______.
Answer:
a) decrease
b) increase
c) decrease
Explanation:
a) The density of water decreases as water changes from liquid to steam.
The density of substances are higher when their molecules are very close to each other having strongest bonding forces. When water is change from liquid to steam it means water molecules are not close to each other as they are in liquid state because now water is changed into gaseous form and molecules are further apart from each other. Thus, density goes to decrease.
b) As the temperature increases, the rate of diffusion of a gas increase.
As temperature increases molecules gets more kinetic energy and rate of diffusion increases.
c) At constant volume, if the temperature of a gas is decreases, its pressure decreases.
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
As temperature decreases its pressure also goes to decrease and vice versa.
PLS PLS PLS HELP ME I WILL MARK YOU BRAINLYEST JUST PLS :((
Answer:
cytoplasm.....................
AFTER the digestive system process food, the energy stored in cells as ______________ .
radiant energy
mechanical energy
thermal energy
chemical energy
what is the definition of phosphates
Explanation:
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How much energy is required to vaporize 18.32 grams of water at its boiling point?
Help me for brainlest and 100 point
Answer: Stamen, the male reproductive part of a flower. In all but a few extant angiosperms, the stamen consists of a long slender stalk, the filament, with a two-lobed anther at the tip. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination. The main flower parts are the male part called the stamen and the female part called the pistil. The stamen has two parts: anthers and filaments. The anthers carry the pollen. The four main parts of a flower are the petals, sepals, stamen, and carpel (sometimes known as a pistil). If a flower has all four of these key parts, it is considered to be a complete flower.
Explanation:
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its due today but i dont get ittttttttttttttt pls ill give brainliest
Which of these is true about energy?
Can be destroyed
Cannot be created
Cannot be transformed
Can be increased in a closed system
Answer:
3number please write okay
Explanation: ok what kinda of math it is
When a light switch is turned on, it releases more energy than it had when it was off. True or False. And Why?
Answer:
True
Explanation:
When activated it needs to burn energy, this excess energy will be released as heat, if it is off it releases no energy will be used therefore no energy will be released.
Chemistry guys help me it’s urgent
Choose a body system and write about what kind of music it would listen to. write 2 sentences for full credit.
Answer : Music is read differently in the brain than
nonmusical tones and is connected to many different areas of the brain. Learning music
relegates a larger part of the brain to recognizing and interpreting music. Listening to
music has also been found to have an effect on learning.
Answer:
The heart would listen to music with a nice rhythm as it beats to the song.
Explanation:
Which reaction is reversible and could reach dynamic equilibrium?
O A. Burning a wood log
O B. Frying an egg
O C. 3H2 + N2 = 2NH3
O D. 2Mg + 02 → 2Mgo
Answer:
The correct answer is - option C. 3H2 + N2 = 2NH3
Explanation:
If in a chemical reaction the rate of the forward reaction and the rate of reverse reaction are equal, this is called dynamic equilibrium. Due to this equal rate of both side reactions, there is no change in the system. In this type of reaction, the concentration of reactants and products remain constant and the overall reaction is continuous.
Dynamic reactions can be reached by reversible reactions such as 3H2 + N2 = 2NH3 where the concentration of hydrogen and nitrogen and concentration of the ammonia remains constant and rate of the both side are equal.
Answer:
3H2 + N2 = 2NH3
Explanation:
what is a lone pair
Answer:
A lone pair is a pair of electrons occupying an orbital in an atom or molecule and not directly involved in bonding.
Explanation:
Answer:
A pair of electrons that is not used in bonding
Explanation:
I took the test
A. 207 kJ
B. 4730 kJ
C. 9460 kJ
D. 414 kJ
Answer:
C = 9460 Kj
Explanation:
Given data:
Mass of copper = 2kg
Latent heat of vaporization = 4730 Kj/Kg
Energy required to vaporize 2kg copper = ?
Solution:
Equation
Q= mLvap
by putting values,
Q= 2kg × 4730 Kj/Kg
Q = 9460 Kj
What occurs when a solid substance dissolves into a liquid?
A. It stays solid and floats on the top of the liquid substance.
B. It changes the liquid substance into a solid substance.
C. It breaks down and becomes part of the liquid substance.
D. It stays solid and sinks to the bottom of the liquid substance.
Answer:
It stays solid and sinks to the bottom of the liquid substance.
A 4 Lbs. Aluminum foil warp costs $33.11 dollars. What is the cost of
one atom of aluminum?
How does a ligand bind to the proper receptor?
Answer:
The ligand crosses the plasma membrane and binds to the receptor in the cytoplasm.
Answer:
The receptor then moves to the nucleus, where it binds DNA to regulate transcription.
could someone please put these examples in groups of which is kinetic energy and which is potential energy I WILL PUT YOU BRAINLIEST ;)))
Answer:
Potential: slingshot, baseball, grasshopper, cliff diver everything else is kinetic
Explanation:
Answer:
slingshot- potential
bobsled- kinetic
grasshopper-potential
swing- potential
cliff diver- potential
baseball- potential
satellite- kinetic
sky diver- kinetic
basketball- potential
arrow- kinetic
Explanation:
:)
Which of the following would be produced in a combustion reaction?
A. Hydrogen
B. Oxygen
C. Carbon dioxide
D. A hydrocarbon
what is the formula for Octasilicon triskaidecaphosphide
Answer:
Triskaidekaphobia, or fear of the number 13, does not fit neatly into a clinical definition of a specific phobia. The number 13 is not an object or a situation, and it can be impossible for the sufferer to avoid.
Explanation:
rationalize the following statements and give chemical reactions .
(1) Lead (II) chloride reacts with chlorine to give pbcl4.
(2) Lead is known not to form an iodide,pbl4 .
Answer:
i do not no
Explanation:
sorry i do not known
Henry sees a basketball and decides to put in motion. What kind of force does Henry
use to move the ball?
Answer:
Unbalanced Energy
Explanation:
:p
What kind of engine does a hybrid car use?
A. gasoline and solar
B. gasoline
C. gasoline and electric
D. electric and solar
Answer:
D. Electric and solar
Answer:
Gasoline and Electric
Explanation:
Quite simply, a hybrid combines at least one electric motor with a gasoline engine to move the car, and its system recaptures energy via regenerative braking. Sometimes the electric motor does all the work, sometimes it's the gas engine, and sometimes they work together.
The type of chemical bond resulting from a complete electron transfer is:
metallic
covalent
radical
ionic
Answer:
ionic / electrovalent bonds
Explanation:
Answer:
4. Ionic
Explanation:
mass is the amount of
Answer:
Mass is a measure of the amount of matter in a substance or an object
Explanation:
we learned about this on school
Which of these is a distinguishing abiotic feature of the Great Barrier Reef, the
world's largest coral reef?
A. Warm, shallow water
B. Blue skies
O C. Freshwater
O D. Colorful corals
Answer: warm shallow water
Explanation: I’m doing the course on Ape and that was correct
The chemical process in which small organic molecules called monomers bond together to form a chain is called A) production B) polymerization C technology D) modification
Does phosphate have the ability to conduct electricity?
Answer:
Red phosphorous can vary in colour from orange to purple, due to slight variations in its chemical structure. The third form, black phosphorous, is made under high pressure, looks like graphite and, like graphite, has the ability to conduct electricity.
Explanation:
What part of a plant is most likely to show negative phototropism
Answer:
Different organs of the plant may exhibit different phototropic reactions to different wavelengths of light. Stem tips exhibit positive phototropic reactions to blue light, while root tips exhibit negative phototropic reactions to blue light. Both root tips and most stem tips exhibit positive phototropism to red light.
Explanation:
Define compound in your own words
Answer:
I think the compound is a chemical bound the compound o cant say I trying
Explanation:
oh the compound is a chemical substance like atoms like H2O and other atoms they have many compounds I think this should be ans
if its ans is too long you want then tell me in comment
draw the ring chain of isomer of propene ?
Explanation:
Molecular formula for Propene = C3H6
The isomer of propene is cyclopropane.
(Draw a triangle to show that it is cyclopropane)
