Answer:
18.46 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V1) = 12.0 L
Initial pressure (P1) = 760 torr
Final pressure (P2) = 0.650 atm
Final volume (V2) =..?
Next, we shall express the pressure in the same unit of measurement.
Thus, 760 torr is equivalent to 1 atm.
Finally, we shall the new volume of the balloon as follow:
Initial volume (V1) = 12.0 L
Initial pressure (P1) = 1 atm
Final pressure (P2) = 0.650 atm
Final volume (V2) =..?
P1V1 = P2V2
1 × 12 = 0.650 × V2
12 = 0.650 × V2
Divide both side by 0.65
V2 = 12/0.65
V2 = 18.46 L
Therefore, the new volume of the balloon is 18.46 L.
how many joules are needed to melt 24.9 grams of ice at 0° C?
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?
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.
3. How is the transfer of energy different in electromagnetic waves
compared to mechanical waves?
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:
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?
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
How many molecules are in 25.08 grams of NH3?
What is S for ClO3, the
chlorate ion?
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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What is the mass percent of a sugar solution having 15 g sugar dissolved in 63 g of solution?
Answer:
23.81%
Explanation:
15 × 100
63
23.809%
23.81%
Which of the following is an alkaline earth metal. Hh
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!
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.
Answer:
Chromosones line up randomly during Metaphase |
Explanation:
Answer:
answer is d
Explanation:for all you edge 2020 people :)
.) Which statement is true? (A) At a given temperature, the temperature value is a measure of the total kinetic energy of all the molecules. (B) At a given temperature, all the particles have the same amount of kinetic energy. (C) At a given temperature, the average kinetic energy of the molecules is constantly changing. (D) At a given temperature, the temperature value is a measure of the average kinetic energy of all the molecules.
Answer:
(D) At a given temperature, the temperature value is a measure of the average kinetic energy of all the molecules.
Explanation:
Kinetic energy is defined as the energy of an object due to its motion.
Kinetic energy remains the same at a constant temperature but increases with an increase in temperature.
At a given temperature, the temperature is the measure of the average kinetic energy of all the molecules. With the increase in temperature of the molecule, some of the absorbed energy is stored within the particles and some of the energy contributed to the motion of the molecules. This causes change in average kinetic energy of molecules due to an increase in temperature.
The root mean square (RMS) speed of the molecules is the square root of the average of each individual velocity squared.
Hence, the correct answer is "(D)."
Calculate the density of an object with a mass of 20 grams and a volume of
1000 cm3
Answer:
20/1000=0.02 denity+mass divided by volume
The density of aluminum is 2.7 g/ml. What is the volume of 8.1 g?
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]
HELP!!!! I HAVE 2 MINUTES!!!
A substance placed into an open plastic container at room temperature exerts a force against the bottom of the container but not the sides of the container. What is the most likely phase of this substance?
A. gas
B. solid
C. liquid
D. plasma
Answer:
a solid
Explanation:
because because gas would excerpt forced throughout the whole container and plasma would be too hot for the plastic container and liquid would flow throughout the container touching the sides and solid is the only one that would probably only touch the bottom of the plastic container exerting force through there
When the hot iron block is placed in the beaker containing room temperature water, what happens to the kinetic energy of the water?
How many conversion factors would be used to convert 20 hectoliters to milligrams?
Help please❤️
Answer:
From unit Symbol Equals Result To unit Symbol
Explanation:
is this volume??? i need specifics
what did the Copernican revolution demonstrate?
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
Which sentences describe disadvantaged of burning fossil fuels instead of using hydrogen fuel cells
Explanation:
thanks thanks thanks thanks thanks
Burning fossil fuels takes place inside expensive fuel cells.
Fossil fuels are nonrenewable.
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
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 I need help ASAP . I will mark brainliest
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 ❤
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?
Answer:
Styrofoam
Explanation:
Please I need help ASAP . I will mark brainliest
Answer:
1） add water
Explanation:
If Chicago had experienced its average highest temperature
in August, which month would have had the longest day? Explain your
reasoning.
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 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
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
Can someone please help me!!??
Answer:
cyfctr rytfuhv
Explanation:
Please help me with my science work
Answer:
what question do you need help with
Explanation:
explain how a bright-line spectrum is produced, in terms excited state, energy, and ground state
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 scientist had the first true atomic theory?
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
Answer:
Air
Explanation:
Air expands
You observe a car parked on the side of the road. If the car started to move, Which conclusion could you make?
The forces were balanced when the car was parked, but one or more forces changed. The total forces became unbalanced, causing it to move.
The forces were unbalanced when the car was parked. When the car moved, they became balanced.
The forces were balanced when the car was parked. The forces stayed balanced when it moved.
The forces were unbalanced when the car was parked, and two or more forces changed. The forces stayed unbalanced and caused the car to move.
Answer:
it was stable because of it was in Potential energy and unstable because it was in kinetic energy or vice Versa. im somehow confused
Biodiversity/having lots of
different plants and animals in
a food web is important
because
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 :)