Answers
Answer:
positive and negative
Explanation:
ik its prob not helpful now but ye sorry no ones answered lol
The phrase related to electromagnetism which can applied only to electric force is positive and negative. The two charges are forming electric force. Whereas, the two poles are forming the magnetic field.
What is electromagnetism ?Electromagnetism is the magnetic field generated by an electric field. The strength of each field is directly proportional to the each other. The magnetic field lines are perpendicular to the electric field lines.
The electric force is generated by two charges positive charge and negative charges. The like charges will repels and unlike charges will attracts each other.
Similarly magnetic south and north poles, generates magnetic filed. The two like poles will repel each other and unlike poles will attracts each other. Hence, the negative and positive terms are related to the electric force.
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Related Questions
If 1.60 g of steam at 100.0 ∘C condenses into 40.5 g of water, initially at 28.0 ∘C, in an insulated container, what is the final temperature of the entire water sample? Assume no loss of heat into the surroundings.
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Help pls! I need help im just writing to use the character limit!
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Answer:
se que la imaje es un poco confusa con la materia pero
desiaria ayudarte pero CREO que con mi TÉCNICA es la A
Solar and wind energy are both intermittent resources that cannot be relied upon for a constant stream of energy production. Explain why developing better ways to store energy is an important part of making these energy sources more practical to use.
Answers
By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers.
By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers. Energy storage's inherent ability to offer backup power in the event of grid failure is a feature that both residential consumers and commercial owners find highly desirable.
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In the figure, which two lines appear to be parallel?
Answers
difference between atom and radical
Answers
As far as terrain, mountainous northern coast otherwise known as the
A. Sierra Nevada Mountains
B. Atlas Mountains
C. Rif Mountains
D. Appalachians
Answers
That should be your answer for the mountainous northern coast.
What does a change in the entropy of a system indicate?
A.
That the disorder of the system has changed
B.
That the equilibrium position has changed
C.
That the energy of the system has changed
D.
That the activation energy has changed
Answers
A change in the entropy of a system indicate that the disorder of the system has changed. Option A
What is a change in entropy?A change in entropy indicates is a measure of the disorder, or randomness, in a system.
An increased value of entropy means more disorder, and a decreased value of entropy means less disorder.
These changes in entropy occur spontaneously
Thus, a change in the entropy of a system indicate that the disorder of the system has changed. Option A
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convert 8.42x10^8 mol/(kg*m^2) to mol/(g*cm^2)
Answers
Answer:
gguhg
Explanation:
no te es caso drama me están muy una las y y que las te
1 kg = 1000 g
1 m = 100 cm
Using these equations, 8.42x10^8 mol/(kgm^2) can be converted to 8.42x10^11 mol/(gcm^2).
Solids, liquids, and gases are the three most commonly accepted phases of matter. Explain the properties of each phase, including their relative energy.
Answers
Answer:
Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another. They have least kinetic energy. For example : chair
Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another. They have more kinetic energy than solids but less than that of gases. For example : oil
Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out. They have most kinetic energy. For example : Hydrogen
Solids, liquids and gas are those substances that have the most common types of bonds and they accept the phases of matter.
The solids that offer max resistance and friction have solid integral cohesion and forces that bind them together. The liquids have lesser denser forces and hence they are mobile while gases are highly mobile as they have large number of spaces and gaps.Learn more abut the three most commonly accepted phases.
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Topic: Washing Machine Durability We wanted to test which brand of washing machine (Warp-pool, Sam's Sung, or GEE) was the most durable. Experiment(al) Design: For our experiment we bought three brand new Washing Machines. A Warp-pool, Sam's Sung, and a GEE. We loaded each washing machine with 50 clay bricks. We ran all of the washing machines at the same time, non-stop, and recorded how long it took each one to break down. We recorded that data in the Table 1. Data: Brand of Washing Machine Length of time till it stopped working Warp-pool 10 Days, 5 Hours and 3 minutes Sam's Sung 2 months, 13 hours and 52 minutes GEE 1 month, 2 hours, and 32 minutes. Question at position 3 3 10 points Question at position 3 Describe your reasoning for writing the claim that you did. Response Expectations: Write in complete sentences. Your response should be a few sentences in length. I should be able to understand your reasoning clearly.
Answers
The claim that "GEE washing machine is more durable than Warp-pool and Sam's Sung washing machines" is based on the experimental data gathered from the test. The data shows that the GEE washing machine was able to run for a longer period of time before breaking down, compared to the Warp-pool and Sam's Sung washing machines. With only 1 month, 2 hours, and 32 minutes of running time, GEE washing machine outlived the other two brands, which were able to run for 10 days, 5 hours, and 3 minutes and 2 months, 13 hours, and 52 minutes respectively. This indicates that the GEE washing machine is more durable and can withstand more wear and tear compared to the other two brands.
When a protonated epoxide is attacked by water, the nucleophile attacks from the ___________ in an __________ process.
Answers
When a protonated epoxide is attacked by water, the nucleophile attacks from the "top" or "front" of the epoxide ring in an "S_N2" substitution nucleophilic bimolecular process.
What is protonated epoxide ?
A protonated epoxide is a molecule that contains an epoxide ring (a three-membered ring consisting of two carbon atoms and one oxygen atom) that has been protonated, or had a hydrogen ion (H+) added to it.
The protonation of an epoxide ring can occur in the presence of an acidic medium, such as a strong acid like sulfuric acid (H2SO4) or hydrochloric acid (HCl).
In acidic conditions, the lone pair of electrons on the oxygen atom of the epoxide ring can interact with the positively charged hydrogen ion, resulting in the formation of a protonated epoxide.
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Increasing which factor will not increase the rate of a chemical reaction?
A: concentration of reactants
B: heat
C: product
D: surface area
Answers
Answer:
c. product
i had the test
Looking at the map, what ideas do you have about why the trash is "trapped" in this location
Answers
Answer:
Due to the circulation of the wind and water the trash will continue to go around in a circle thus causing it to be trapped there.
The __________________variable is the one factor you manipulate or change in the experiment
Answers
The dependent is what you are measuring. The independent is the one thing you are altering so you can carry out your experiment.
How many moles of water form from one gram of magnesium hydroxide
Please help!!! Max points!
Answers
Answer: 2.00 mol
Explanation:
\(\\ \rm\Rrightarrow Mg(OH)_2\longrightarrow Mg0+H_2O\)
Moles of Mg(OH)_2
Given mass/Molar mass1/240.416molNow
1mol produces 1 mol water0.416 mol produces 0.416 mol waterWhich term describes a solution having a very well-known concentration of solute? Select one: Primary standard Standard solution Volumetric analysis Secondary standard
Answers
Answer:
Standard solution
Explanation:
In chemistry, standard solutions are solutions that contain a very well known concentration of a substance such as solutes. In other words, standard solutions contain solute concentrations that are accurately (without errors) known. They are prepared by dissolving a known mass of solute in a known volume of solvent.
Standard solutions are majorly used to determine the concentration of another solution, whose concentration is unknown. Standard solutions contain a primary standard, which possess characteristics such as high solubility, high purity etc.
Which atom has the greatest ionization energy?
C
N
O
F
Answers
Answer:
helium
The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.
I have a cup of 50 ml of water resting at 25 degrees Celsius in an isolated system. I heat a 30g rock to 75 degrees Celsius and place it into the water. The final temperature of the water is 50 degrees Celsius. The specific heat of water is 4.186 J/gC. What is the specific heat of the rock? (Hint: Remember, the change in temperature is calculated by T final-T initial. Also 1 ml of water is equal to 1g)
Answers
The specific heat of water is 4.186 J/g°C, the specific heat of the rock is 13.95 J/g°C.
To solve this problem, we can use the principle of conservation of energy. The heat lost by the hot rock is equal to the heat gained by the cool water. The equation for heat transfer is:
Q = mcΔT
where Q is the amount of heat transferred, m is the mass of the object, c is the specific heat, and ΔT is the change in temperature.
Let's start by calculating the heat lost by the hot rock:
Q_rock = m_rock * c_rock * ΔT_rock
where m_rock is the mass of the rock, c_rock is the specific heat of the rock, and ΔT_rock is the change in temperature of the rock.
We know that the initial temperature of the rock is 75 degrees Celsius and the final temperature of the water is 50 degrees Celsius, so:
ΔT_rock = 75 - 50 = 25°C
We also know the mass of the rock is 30g. Therefore, we can calculate the heat lost by the rock:
Q_rock = (30g) * c_rock * (25°C)
Next, we can calculate the heat gained by the cool water:
Q_water = m_water * c_water * ΔT_water
where m_water is the mass of the water, c_water is the specific heat of water, and ΔT_water is the change in temperature of the water.
We know the initial temperature of the water is 25 degrees Celsius, the final temperature of the water is 50 degrees Celsius, and the mass of the water is 50g (since 1 ml of water is equal to 1g). Therefore:
ΔT_water = 50 - 25 = 25°C
Q_water = (50g) * (4.186 J/g°C) * (25°C)
Since the heat lost by the rock is equal to the heat gained by the water, we can set Q_rock equal to Q_water and solve for c_rock:
(30g) * c_rock * (25°C) = (50g) * (4.186 J/g°C) * (25°C)
c_rock = (50g) * (4.186 J/g°C) * (25°C) / (30g * 25°C)
c_rock = 13.95 J/g°C
Therefore, the specific heat of the rock is 13.95 J/g°C.
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How many grams are in 0.0823 moles of Ar? given; unknown:
Answers
Answer:
3.2877204
Explanation:
whats the balanced chemical equation for Solid potassium iodide decomposes into solid potassium and iodine gas
Answers
Answer:
Solid potassium iodide decomposes into solid potassium and iodide gas.
Explanation:
The answer given has a subscript "2" on the iodine at the start of the equation. Why is the 2 there as a subscript?
an ant eater can eat 6.9 pounds of ants in a day. if each ant has a mass of 82 mg how many ants do they eat in one day??
Answers
The number of ants the anteater can eat in a day is 39123 ants.
What is the number of ants the anteater can eat in a day?The number of ants the anteater can eat in a day is calculated as follows:
mass of ants the anteater can eat in day = 6.9 lb
mass of ants the anteater can eat in day in g = 6.9 lb* 453.6 g/1 lb
mass of ants the anteater can eat in day in g = 3129.84 g
mass of one ant in g = 80/1000 = 0.08 g
number of ants the anteater can eat in a day = 3129.84 g/0.08 g
number of ants the anteater can eat in a day = 39123
In conclusion, the number of ants the anteater can eat in a day is obtained from the ratio of the mass of ants eaten by the anteater in a day and the mass of one ant.
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What is the percent of C in Ca(C2H302)2? (Ca = 40.08 gkmol, C = 12.01 g/mol, H= 1.01 g/mol, O = 16.00 g/mol) [?1%C Round your answer to the hundredths place. [?] % C
Answers
Answer:
Ca(C2H3O2)2 has 30.41% carbon by volume
Explanation:
Calculate the amount of copper (in moles) in a 45.2 g pure copper sheet
Answers
Answer:
0.712 mol
Explanation:
The easiest way to do this is to use a proportion.
1 mol of copper = 63.5 grams (check this using your periodic table).
x mol of copper = 45.2 grams
1/x = 63.5 / 45.2 Cross multiply
63.5 x = 1 * 45.2 Divide by 63.5
x = 45.2/63.5
x = 0.712 mol Answer to 3 sig digs
3. Refer to the periodic trend of the electronegativity of elements; list the following bonds in order of decreasing polarity. Identify the positive pole, if any.
F - F, P - O, N - O
4. Refer to the periodic trend of the electronegativity of elements, rank the percent ionic character of the bond between the following pairs of atoms from the lowest to the highest.
C - O, C - F, Na - O, Na - N, and Na - F
Answers
Part 3: Electronegativity of elements: F - F > N - O > P - O.
Part 4: Electronegativity of elements: Na - F > C - F > C - O > Na - O > Na - N.
Define the term electronegativity of elements?The ability of an atom to draw shared electrons to it's own is measured by its electronegativity. Electronegativity on the periodic table typically rises from left to right over a period and falls as you go down a group.The reasons for the Electronegativity of different elemnts are-
F-F: This bond is nonpolar because the electronegativity of both fluorine atoms is the same, making the bond electrically neutral.P-O: This bond is polar because the electronegativity of oxygen (3.44) is greater than the electronegativity of phosphorus (2.19), creating a positive charge on the oxygen atom and a negative charge on the phosphorus atom. The oxygen atom is the positive pole.N-O: This bond is more polar than the P-O bond because the electronegativity of nitrogen (3.04) is greater than the electronegativity of oxygen (3.44), creating a positive charge on the oxygen atom and a negative charge on the nitrogen atom. The oxygen atom is the positive pole.Thus,
Part 3: Electronegativity of elements: F - F > N - O > P - O.
Part 4: Electronegativity of elements: Na - F > C - F > C - O > Na - O > Na - N.
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Can someone help me?
Answers
The new volume assuming that the pressure and temperature remain constant is 0.46 L and the correct option is option 1.
The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as-
PV = nRT
where,
P = Pressure
V = Volume
T = Temperature
n = number of moles
Given,
Initial volume = 1.5 L
Initial moles = 7.5 moles.
Moles remaining = 2.3 moles
\(\frac{n_{1} }{V_{1} } = \frac{n_{2} }{V_{2} }\)
\(\frac{7.5}{1.5 } = \frac{2.3}{V_{2} } }\)
V₂ = 0.46 L
Thus, the ideal selection is option 1.
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How many bonding electrons are in the Lewis structure of PCl₃?
5
6
4
2
Answers
Answer:
B.) 6
Explanation:
Attached below is the Lewis structure of PCl₃ . Since phosphorus (P) has 5 valence electrons and chlorine (Cl) has 7 valence electrons, there should be 26 valence electrons (5 + 7(3) = 26) in the Lewis structure.
Bonding electrons are the electrons present in the chemical bonds between two atoms.
There are 2 electrons shared in every single bond. Within PCl₃, there are 3 single bonds. As such, there are 6 bonding electrons in the Lewis structure of PCl₃.
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Answer:
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pOH of the 0.001M NaOH solution is
Answers
The pOH of the 0.001 M NaOH solution is approximately 3.
To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.
In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.
The pOH is calculated using the equation:
pOH = -log[OH-]
Substituting the concentration of hydroxide ions, we have:
pOH = -log(0.001)
Using a calculator, we can evaluate the logarithm:
pOH ≈ 3
Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.
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Select the best answer for the question. 1. Mei is seated doing leg extensions and going through the full path of motion. What type of exercise is Mei doing? O A. Free-weight exercise B. Resistance exercise C. Machine exercise O D. Cable exercise
Answers
The correct answer is "C.
The type of exercise that Mei is doing is the "Machine exercise."
Machine exercise refers to a physical fitness training technique that allows the muscles to develop and strength through the use of machines that use hydraulic cylinders, weights, and cables to produce resistance. The machine exercises are generally performed in a seated position or lying down, and most often use a series of cables and weights that are adjusted to the user's specific body weight and desired level of resistance.Machine exercises can effectively target specific muscle groups and help strengthen them.Machine exercises can help you increase muscular endurance and improve your overall fitness level.Machine exercises are often safer and easier to perform than free-weight exercises.Machine exercises are generally easier on your joints and can help reduce the risk of injury.Machine exercises are also helpful for people with limited mobility or those recovering from an injury or surgery.For such more questions on Machine exercise
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How many mg does an 830 kg sample contain?
Answers
Answer:
A sample of 830 kg would contain 830000000 mg
Explanation: