Answers
Related Questions
When the hot iron block is placed in the beaker containing room temperature water, what happens to the kinetic energy of the water?
Answers
please answer I will give brainiest to who helps. On the morning of a birthday party, a balloon is filled with 8.5 L of helium (He) when the temperature is 294 kelvin. The party starts at 4:00 p.m., at which time, the temperature has risen to 305 kelvin. What is the new volume of the balloon?
Answers
Answer:
V₂ = 8.8 L
Explanation:
Given data:
Initial volume = 8.5 L
Initial temperature = 294 K
Final temperature = 305 K
Final volume = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 8.5 L × 305 K / 294 k
V₂ = 2592.5 L.K / 294 K
V₂ = 8.8 L
what did the Copernican revolution demonstrate?
Answers
Answer:
The Copernican Revolution was the paradigm shift from the Ptolemaic model of the heavens, which described the cosmos as having Earth stationary at the center of the universe, to the heliocentric model with the Sun at the center of the Solar System.
Explanation:
From Google
If Chicago had experienced its average highest temperature
in August, which month would have had the longest day? Explain your
reasoning.
Answers
If Chicago had experienced its average highest temperature in August, the longest day remains the same and that is the 21st of June.
What is the effect of temperature on the length of the day?The effect of temperature induces the combination of more direct rays of the sunlight as the result of the tilting of the earth's hemisphere towards the sun to receive more solar energy and possess a warmer temperature.
But the temperature of a particular region also depends on the humidity and other abiotic parameters. So, if Chicago had experienced its average highest temperature in August, it does not mean that the longest day is in the month of August. It will remain, as usual, i.e 21 June.
Therefore, if Chicago experienced its average highest temperature in August, the longest day remains the same and that is the 21st of June.
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Which scientist had the first true atomic theory?
Answers
Hope I helped ;)
The density of aluminum is 2.7 g/ml. What is the volume of 8.1 g?
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Answer:
volume= 3
Explanation:
D=m/v
2.7=8.1/v
2.7v=8.1
8.1/2.7= 3
8.1/3= 2.7 which is the density!
Answer:
3 mL
Explanation:
[tex]V = \frac{8.1 g}{3 mL} = 2.7 g/mL[/tex]
a wave has a frequency of 50Hz and a speed of 25m/s. What is the wavelength??
Answers
Answer:500m/s
Explanation:
Which happens during crossing over?
Two sex cells join together and combine DNA.
Genes are exchanged between two alleles.
Genes are exchanged between two egg cells.
Chromosomes line up randomly during metaphase I.
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Answer:
Chromosones line up randomly during Metaphase |
Explanation:
Answer:
answer is d
Explanation:for all you edge 2020 people :)
Which condition must be met for conduction to occur?
particles must be large
particles must be small
particles must be in contact
particles must be spread apart
Answers
The condition that must be met for conduction to occur is particles must be in contact. Therefore, the correct option is option C.
What is conduction flow of heat?A pan heats up when you place it on the flame. It's because heat is transferred from the burner to the pan. Also, it allows any other utensil or pan to heat up. Yet after a while, the vessel cools down when you remove it from the heat. That happens because the vessel's heat is dissipated onto the surrounding area.
It enables the vessel to cool. Heat is passed from a warm object towards the cold object in both situations. Typically, it occurs in every situation. Conduction is the process through which heat is transported from one object's hot end to its cool end. The condition that must be met for conduction to occur is particles must be in contact.
Therefore, the correct option is option C.
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Please help me with my science work
Answers
Answer:
what question do you need help with
Explanation:
Which sentences describe disadvantaged of burning fossil fuels instead of using hydrogen fuel cells
Answers
Explanation:
thanks thanks thanks thanks thanks
Burning fossil fuels takes place inside expensive fuel cells.
Fossil fuels are nonrenewable.
Can someone please help me!!??
Answers
Answer:
cyfctr rytfuhv
Explanation:
explain how a bright-line spectrum is produced, in terms excited state, energy, and ground state
Answers
Answer:
cuz the light is a fraction of the world is screens like: tablets,tv,phones,computers. so the world is like nothing to anyone revolves around electronics so if you lost your electronic for 3 days.....could you do it???? (p.s the finge is pointing at you)
Explanation:
Which of the following is an alkaline earth metal. Hh
Answers
Answer:
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium, magnesium, calcium, strontium, barium, and radium.
Hope this helped!
How many molecules are in 25.08 grams of NH3?
Answers
1.475 x (6.02x10^23) = 8.8795 x 10^23 molecules NH3
What is S for ClO3, the
chlorate ion?
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Answer:
The chlorate anion has the formula ClO⁻ ₃. In this case, the chlorine atom is in the +5 oxidation state. "Chlorate" can also refer to chemical compounds containing this anion; chlorates are the salts of chloric acid.
"S" typically represents the oxidation state or oxidation number of an element in a chemical compound. For the chlorate ion (ClO₃⁻), the oxidation state of chlorine (Cl) is +5.
The oxidation number, also known as the oxidation state, of an element in a chemical compound is a numerical value that indicates the electron distribution and the degree of electron loss or gain by an atom in a chemical reaction. It helps to identify the type of chemical bonding and the role of each element in the compound.
The chlorate ion (ClO₃⁻) has a chemical formula of ClO₃⁻ where:
Cl: Chlorine has an oxidation state of +5 since oxygen (O) is known to have an oxidation state of -2 and the overall charge of the ion is -1.
O: Oxygen has an oxidation state of -2.
So, the oxidation state of chlorine in the chlorate ion is +5.
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Please I need help ASAP . I will mark brainliest
Answers
Answer:
Explanation:
"Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state."
This MIGHT be wrong, so dont assume this is the exact answer. Thats just what the internet says....
Hope I helped!!!
-Alexis ❤
3. How is the transfer of energy different in electromagnetic waves
compared to mechanical waves?
Answers
Answer:
Electromagnetic waves are produced by the vibration of charged particles. ... A mechanical wave is a wave that is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave.
Explanation:
Biodiversity/having lots of
different plants and animals in
a food web is important
because
Answers
Biodiversity is really important, because different species support each other in an ecosystem, and this maintains a healthy ecosystem.
Hope this helps! :)
and have a good day :)
The measurement of an object's mass is a ____.
Answers
Four materials are put into small containers. These materials are then moved from the small containers into larger containers. Which material will spread out to completely fill a larger container?
Answer quickly please
A.Air
B.Ice
C.Sand
D.Water
Answers
Answer:
Air
Explanation:
Air expands
Calculate the density of an object with a mass of 20 grams and a volume of
1000 cm3
Answers
Answer:
20/1000=0.02 denity+mass divided by volume
how many joules are needed to melt 24.9 grams of ice at 0° C?
Answers
q= 24.9g x 273K (convert °C to Kelvin)
q= 6798 J
Which of these correctly describes a change in the state of water. a. Liquid water - melts - solid water b. Liquid water - boils - water vapor c. Solid water - condenses - liquid d. Water vapor - evaporates - liquid water
Answers
Answer:
b. Liquid water - boils - water vapor
Explanation:
a. Liquid water - melts - solid water
This is wrong; Water to Solid is freezing
b. Liquid water - boils - water vapor
This is the correct option!
c. Solid water - condenses - liquid
This is wrong; solid to liquid is melting
d. Water vapor - evaporates - liquid water
This is wrong; vapor to liquid is condensation
True or false. The human ear drum transfers sound waves into vibrations and into the inner ear.
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Explanation: sound waves enter the outer ear and travel through a narrow passageway caller the ear canal, which leads to the eardrum, The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear.
Hope this helps! Xoxo
The human ear drum transfers sound waves into vibrations and into the inner ear. This statement is true.
What is sound wave ?A sound wave is the pattern of disturbance caused by the movement of energy as it propagates away from the source of the sound through a medium. Sound waves are produced by object vibrations and pressure waves, such as a ringing cellphone.
It gathers sound waves and directs them to the ear canal (external auditory meatus), where they are amplified. The sound waves then travel to the eardrum, also known as the tympanic membrane, which is a flexible, oval membrane at the end of the ear canal. The eardrum vibrates as a result of sound waves.
These vibrations are transmitted by the ear drum to the three tiny bones in the middle ear known as the malleus, incus, and stapes. The middle ear bones amplify, or increase, the sound.
Thus,The human ear drum transfers sound waves into vibrations and into the inner ear.
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Explain, in terms of electrons, energy, and energy levels, how the bright-line spectrum of an element is produced
Answers
What is the formula for beryllium cyanide?
BeCN2
Be(CN)2
BeCN
Be2CN
Answers
Answer:
B
Explanation:
I think tha one is more used because it's more reasonable
Four balls made of different materials are placed on a tabletop 2 meters from the floor.
Ball
Material
Mass
A
Styrofoam 5g
B
Rubber 18g
C
Plastic (hollow) 2g
D
Solid plastic 21g
Which ball has the GREATEST amount of potential energy?
Answers
Answer:
Styrofoam
Explanation:
Ava observes that a certain species of bird follows behind a herd of cattle. The bird species primarily eats insects. The birds stay with the herd of cattle as they graze. What is a scientific hypothesis that Ava could formulate based on her observations?
Answers
Answer:
There are insects associated with the cattle herd that serve as food for Ava.
Explanation:
The most logical hypothesis to deduce from the observation would be that the cattle herd has a kind of association with insects that happen to serve as food for the birds.
Usually, the body of cattle is plagued with different species of parasitic insects which obtain their foods and shelters from the animal. These parasitic insects will definitely be a food source for insect-predating birds. Hence, it follows logically that the Ava birds lurk behind the herd of cattle scouting for insects on the body of the cattle.
how many total electrons can the D orbitals hold
Answers
Answer:
10 electrons
Explanation:
The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max. In the picture below, the orbitals are represented by the boxes. You can put two electrons in each box.
Hope it helps!
Answer:
10
Explanation:
Yes