Answer:
Facts About Biosphere 1: The Evolution Of Biosphere
Biosphere has evolved. It started from the non living matter or simple organic compound which created the life. This process is called bioprocess which conducted around 3.5 billion years ago.
Facts about Biosphere 2: the life of earth
It is not easy for the scientists to determine the life of earth. However, they can estimate it after the discovery of the metasedimentary rocks from Western Greenland. The scientists believed that it was dated back around 3.7 billion years old.
Facts About Biosphere 3: Another Evidence For The Earth’s Life
Evidence was found in Western Australia. The discovery of microbial mat fossils made the scientists estimated that the earth was dated around 3.48 billion years ago.
A list of changes is shown.
Temperature decreases
Intermolecular bonds become weaker
Freezing
Intermolecular bonds become stronger
Evaporation
Temperature increases
Vibration of molecules slows down
Molecules vibrate faster
Which of the above changes would be accompanied by an increase of the kinetic energy of particles in a liquid?
A, B, C, and H
A, C, D, and G
B, E, F, and H
B, C, F, and G
Answer:
b,c,f,g
Explanation:
it makes the most sense plus i just took the test <3 good luck
With an increase in the kinetic energy of the solid molecule the intermolecular bonds become weaker, temperature increases, melting and molecules vibrating faster are changes.
What is the effect of the increased kinetic energy?Kinetic energy is the form of the energy that is present in an entity in motion. When the kinetic energy is increased then the temperature of the particles increases and leads to evaporation.
The increased kinetic energy weakens the intermolecular bonds of the liquid particles and the molecules of the particles start vibrating fast.
Therefore, option b. intermolecular bonds become weak, option e. evaporation, option f. temperature increases and option h. molecules vibrate faster are the changes.
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1. Which of these is not a natural part of
Soil is a mixture of minerals, organic matter, water and air. The minerals come from bits of broken-down
rock. Organic matter is material that is alive or used to be alive. It includes leaves, twigs, bugs and many
microscopic, or tiny, organisms like bacteria and fungi. In fact, there are more microorganisms in a handful
of soil than there are people on the planet. Soil is needed for life to exist on Earth. It contains many
nutrients that help plants grow. Then the plants provide nutrients that help animals grow
A. pebbles of different sizes
B. plastic bottle caps
C. dead worms
D. plant roots
If I had 50 graham cracker squares, 15 marshmallows, and 100 little chocolate pieces, how many total s'mores could I make before I ran out of ingredients?
2 Grahams + 1 Marshmallow + 4 Chocolate Pieces --> 1 S'more
Group of answer choices:
50
15
100
25
20
Answer: 15
Explanation:
25 graham crackers
15 marshmallows
25 chocolate pieces
would make 15 s’mores
15 s'mores can be made from the given ingredients. Therefore, option B is correct.
How many total s'mores can be made?Assuming that one graham cracker square, one marshmallow, and two little chocolate pieces to make one s'more are required, calculate the maximum number of s'mores that can be made with the given ingredients as follows:
You have 50 graham cracker squares, so you can make a maximum of 50 s'mores using all of them.You have 15 marshmallows, which is enough to make 15 s'mores.You have 100 little chocolate pieces, which is enough to make 50 s'mores (since you need two chocolate pieces for each s'more).Therefore, the ingredient you run out of first will limit the number of s'mores that can be made. Since there are only 15 marshmallows, only a maximum of 15 s'mores can be made. Therefore, option B is correct.
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#SPJ3
When a predator population increases what happens to the prey population? Increase Decrease Dies Stays the same
Answer: as the number of predators increases, more prey are captured. as a result the prey population starts to decrease.
What is the percentage of metal in a sample of CaSO4?
Answer:
Calcium is the metal so its 29.439%
Explanation:
Calcium Ca 29.439%
Oxygen O 47.008%
Sulfur S 23.553%
Where do fronts always form?
Fronts form over water and move inland.
Fronts form at boundaries between air masses.
Front form at high altitudes and descend toward Earth's surface.
Fronts form around locations with severe weather.
What is the boiling point (in °C) of a 0.195 m
aqueous solution of K2S?
Enter your rounded answer with
3 decimal places.
Kb for water = 0.512 °C/m
Please hurry
Answer:100.3
Explanation:
A good conductor of heat
The difference between asexual and sexual reproduction is _______. Please help me with this, thank you.
Answer:
hope this helped.
Explanation:
Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.
Claim: Sound is not matter. Which piece of evidence supports this claim?
Sound is made of atoms and has a specific density.
Sound is created when molecules vibrate in a medium,
Sound takes up space and can be weighed on a scale.
Sound does not have mass or volume, it is a form of energy.
Answer:
Sound Energy is a form of Mechanical Energy
HELP ASAP
Which can happen when energy is transferred from one system to another?
A.New energy is created.
B.Some energy is destroyed.
C.The energy changes form.
D.The energy changes into mass.
Answer:
Energy is transferred from one object to another when a reaction takes place.
Explanation:
Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few.
The answer could be It is a well known fact that energy can neither be created and nor be destroyed but can be transformed from one form to another.
Now talking about your example in a typical light bulb electrical energy is converted into light energy and heat energy. Now when the electric current flows through the conductor/filament in the light bulb,this would cause vibrations and the free ions are more likely to go to an higher energy level,and when the ions come back to their original state,the difference in the two energy levels is usually emitted as a photon,thus light energy is obtained and the heat energy is the energy dissipated as a result of flow of electricity through the conductor.
Anything that gets transformed into light energy or in better words ElectroMagnetic Energy would be a result of this.
4. Identify the phase of each of theses models (solid, liquid or gas)
Answer:
1st Square - Liquid
2nd Square - Gas
3rd Square - Solid
Explanation:
Laura jala un trineo una distancia de 2000 cm usando una cuerda, con una tensión constante de 80 N. La tarea requiere de 800 J de trabajo, ¿qué ángulo forma la cuerda con el suelo?
Respuesta:
60°
Explicación:
Paso 1: Información dada
Distancia recorrida (d): 2000 cmFuerza aplicada (F): 80 NTrabajo realizado (W): 800 JPaso 2: Convertir "d" a metros
Usaremos el factor de conversión 1 m = 100 cm.
2000 cm × 1 m/100 cm = 20 m
Paso 3: Calcular el ángulo entre la cuerda y el suelo (θ)
W = F × d × cosθ
800 J = 80 N × 20 m × cosθ
θ = 60°
How is the division of animal/human cells different from the division of plant cells?
what is the conjugate base of HC6H6O6-
Answer:
the conjugate base of the compound is
C6h6O2/6-
Explanation:
subscript
The conjugate base of [tex]\rm HC_6H_6O_6^-\; is \; C_6H_6O_6^-[/tex].
What are conjugate acids and bases?Conjugate acid is the acid that donates a hydrogen ion to a base, conjugate acid contains a hydrogen ion.
The base that gains a hydrogen ion from a conjugate acid is called the conjugate base.
The acid is NH4 converts into a conjugate base NH3-
When a conjugate acid donates a hydrogen ion, it converts into the conjugate base.
Thus, the conjugate base is [tex]\; C_6H_6O_6^-[/tex]
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*HURRY PLEASE AND SHOW YOUR WORK* If 22.5 L of nitrogen at 0.95 atm are compressed to 1.35 atm at constant temperature, what is the new
volume?
write importance of magnesium metal
Answer:
can be used in fireworks, flares and sparklers
Explanation:
as it burns in air it ignites with bright light
What molecules would you expect to find in air
Answer:
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
Explanation:
Answer:
nitrogen, oxygen, carbon dioxide, water vapour, ozone, helium, and hydrogen.
Explanation:
What is the enthalpy of the overall chemical reaction CH4(g)+4CI2(g) → CCI4(g)+4HCI(g)?
Answer:
-205.7 kJ
Explanation:
if ur a connexus kid i just took this too lol
Answer:
A (-205.7)
Explanation:
What happens to the pH if you then add 0.6L of blood to the mixture? Is the mixture acidic or basic? Was the pH the same as it was in #6?
Answer:
basic
Explanation:
Please note: Kindly check attachment for the diagram showing phET simulation.
The determination of the pH value of a substance is one of the crucial aspect of Chemistry. A substance can be a basic, neutral or acidic. The basicity of a base can simply be defined as when a base has a characteristic of accepting proton.
The pH of the mixture will turn basic when 0.6L of blood is added to the mixture.
Also, note that the blood is basic, hence there will be a pH value greater that 7 [ 7.30].
The pH in #6 is 7.40. Both #6band this one are basic while their values are slightly different.
What is a mixture? Plz help
Answer:
a substance made by mixing other substances together.
Explanation:
Answer:
a mixture is different things put together
Explanation:
What is the mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride,ZnCI[subscript 2]?
[Relative atomic mass : Zn = 65]
Answer:
16.25g
Explanation:
Equation for the reaction = Zn + 2Cl = ZnCl2
1 molecule of Zn = 2 molecule of Cl
x mole of Zn = 0.5mol of Cl
mole of Zn = 0.25mol
mass of Zn = 0.25 * 65 = 16.25g
The mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride is 16.25g.
What is mass?Mass is the quantity of matter in a physical body.
The reaction is Zn + 2Cl = ZnCl₂
The ratio of moles of Zn and Cl
1 : 2
m, mol of Zn is equal to 0.5 mol of Cl
Moles of Zn = 0.25 mol
Multiply the mole of Zn and the relative atomic mass of Zn
Mass of Zn = 0.25 × 65 = 16.25 g.
Thus, the mass of zinc is 16.25 g.
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HELPPP
Compared with space operations specialists, intelligence officers are which of the following?
less likely to perform on-the-job training
more likely to participate in a technical training
less likely to obtain a bachelor’s degree
more likely to work with highly classified information
Answeruuuuu it's b I think
Answer:
(dunno exactly but i put:)
more likely to work with highly classified informationA sample of gas has a volume of 2.0 liters at a pressure of
1.0 atmosphere. When the volume increases to 4.0 liters, at constant temperature, the pressure will be
a. 0.50 atm
b. 2.0 atm
c. 0.25 atm
d. 1.0 atm
Is freshwater a mixture?
Answer:
No
Explanation:
A mixture is when two or more substances combine physically together. However, in water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone. ... Therefore, water is not a mixture
5.25 ml of substance A has a mass of 3.9 g and 6.24 ml of substance B has a mass of 4.4 g. Which liquid is more dense?
Answer:
A is more dense
Explanation:
The is because you can find the density of anything by dividing the Mass by volume A is .7428 and B is .7051 . There fore A is denser .
Which statement describes elements?
A. Each element is made up of the same type of atoms.
B. Each element is made up of different types of atoms.
C. All elements exist only in the liquid phase.
D. All elements are solid metals.
Answer:
B
Explanation:
CH,O
Needed:
Available:
Shared:
Bonds:
Answer:
hy do C-C bonds and C-H bonds have high potential energy levels? ... electronegativity so the electrons in the covalent bond are equally shared. Term. Which functional groups are commonly found on a carbohydrate? ... few organisms have the specific enzymes needed to break the bond in the B-form ...
Explanation:
Why is it so difficult to change the temperature of water?
Answer:It takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules. ... Because of its high heat capacity, water can minimize changes in temperature.
Explanation:
9.31*10^3=_*10^5
please if you could explain it as well, i’m so confused and struggling