Answer:
Electrons are added to two negatively charged objects.
Explanation:
Two negatively charged objects repel each other.
If electrons are added to two already negatively charged objects, they wil become even more negatively charged, which increases the electric force between the objects.
The electric force between objects can be increased when electrons are added to two negatively charged objects. Therefore, option B is correct.
What is electric force?The electric force is the attraction or repulsion between electrically charged objects. The force is created by the presence of charged particles, such as electrons or protons. It is described by Coulomb's law.
Like charges repel each other, while opposite charges attract each other. The strength of the electric force depends on the amount of charge on the objects and the distance between them. The force increases as the amount of charge increases and as the distance between the objects decreases.
Electric force is a fundamental force in nature. It plays an important role in many physical phenomena, such as electricity and magnetism. Therefore, option B is correct.
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What limits what scientist can study in their work
Answer:
The confounder
Explanation:
A confounder is a quality or variable that affects the results of the study but is not included in the study itself
During an epic round of Tug-of-War, Jared and James thought they’d be able to beat Mr. Collins no problem. Together, they applied a force of 300 N pulling to the left. But with one arm on the rope and the other at his side, Mr. Collins applied a 300 N force to the right. What is the net force and direction on the rope?
The net force on the rope is equal to zero as both forces are in equal magnitude but in opposite directions.
What is the net force?The net force on an object can be defined as the vector sum of all forces acting on a particle or object. The net force can be described as a single force representing same the effect of the actual forces on the motion of a particle. Net force offers the same value of acceleration as all those actual forces together.
The net force has a similar effect on the rotational motion as all actual forces taken together so it becomes the resultant force. It.
In the given problem, the applied force by Jared and James is in the opposite direction of the force applied by Mr. Collins.
Given, the force applied by James and Jared in the left direction= 300N
The force applied by Mr. Collins in the right direction = -300N
The net force on the rope = 300N + (-300N) = 0
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What is the pH of a solution that
contains [H+]=3.18 x 10^-8 M?
Answer:
7.50
Explanation:
pH=-log(H3O+)
- Hope that helps! Please let me know if you need further explanation.
As the amount of charge on two objects increases, the strength of the electrical force between the objects
O increases
O decreases.
O varies
O remains the same
Answer:
Increases, since higher the charge concentration higher the electrical force of attraction and repulsion
What is the world's most common acid
and also the world's most common base?
Answer:
Thus, as both an amphoteric compound and the most common liquid on Earth, it follows that water is both the most common acid as well as the most common base on planet Earth
The most common acid in the world is sulfuric acid (H2SO4), and the most common base is sodium hydroxide (NaOH).
Explanation:Acids and bases are common substances found in many everyday items. The most common acid in the world is sulfuric acid (H2SO4). It is used in various industrial processes and has a wide range of applications.
The most common base in the world is sodium hydroxide (NaOH). It is commonly known as caustic soda and is used in many household products such as detergents and drain cleaners.
a solution has a hydronium concentration of 1.3x10^-3 M. what is the pH of the solution?
The pH of the solution with a hydronium ion concentration of 1.3x10⁻³ M is calculated to be approximately 2.886, indicating that the solution is acidic.
The pH of a solution is calculated using the formula pH = -log[H3O+], where [H3O+] is the hydronium ion concentration in moles per liter (M). Given a hydronium ion concentration of 1.3x10^-3 M, we calculate the pH as follows:
Write the concentration of hydronium ions as 1.3x10⁻³ M.
Apply the pH formula: pH = -log(1.3x10⁻³).
Calculate the logarithm: pH = -(-2.886) = 2.886.
Therefore, the pH of the solution is approximately 2.886, which indicates that the solution is acidic.
Percent composition H2S2O8
Answer:194.1411 g/mol
Explanation:
Describe how the metal probably increases the reaction rate, identify whether this is an example of homogeneous or heterogeneous catalysis, and explain how you know.
Answer:
The metal probably increases reaction rate by either holding reactant molecules in the correct orientation to react or by weakening or breaking bonds in reactant molecules to make them more reactive.
This is an example of heterogeneous catalysis.
It is heterogeneous catalysis because the catalyst is a solid and the reactants are gases. In heterogeneous catalysis, the catalyst is in a different phase than the reactants
Explanation:
got it right :)
Answer:
The metal probably increases reaction rate by either holding reactant molecules in the correct orientation to react or by weakening or breaking bonds in reactant molecules to make them more reactive.This is an example of heterogeneous catalysis. It is heterogeneous catalysis because the catalyst is a solid and the reactants are gases. In heterogeneous catalysis, the catalyst is in a different phase than the reactants.
Explanation:
How is balancing a chemical reaction similar to taking inventory in a store?
Answer:
The both must be balanced and every input must be accounted for at the output.
Explanation:
In taking inventory at the store, one must make sure that the total inventory is always balanced at the end of the inventory log (all stocks taking out must be accounted for in the end) so also is the chemical reaction in which the total reactants species atoms must equal the total product specie atoms.
economics 
At which point would the government be most likely to try to stimulate the economy?124
At which point would a business be most likely to hire new workers?
Answer:
4 & 5
Explanation:
Answer:
4
5
Explanation:
got it right on edg 2021
What is the percent by mass of a solution that
contains 25 g KNO3 in 400.0 g H20?
Answer: 5.9%
Explanation: e2020
Answer:
c) 5.9%
Explanation:
got it correct on edg
Tim realized that when he brought a positively charged piece of cloth in contact with a negatively charged sock that they both stuck together. Why did that happen?
Answer:
Static electricity caused the it to be pulled toward each other like magnets. Also, positives and negatives attract.
Explanation:
Answer:
This was due to static electricity or electrostatic induction.
Explanation:
Electrostatic induction, is a redistribution of charges in an object caused by the electric field of a nearby charge. For example, if a positively charged piece of cloth is brought near negatively charged sock, the mobile negatively-charged electrons in the sock will be attracted by the external charge, and move to the side of the metal facing it, creating a negative charge on the surface. When the electrons move out of an area they leave a positive charge due to the metal atoms' nuclei, so the side of the metal object facing away from the charge acquires a positive charge. These induced charges disappear when the external charge is removed.
Static electricity is usually caused when certain materials are rubbed against each other, like wool on plastic or the soles of shoes on carpet. The process causes electrons to be pulled from the surface of one material and relocated on the surface of the other material.
jermey has two plants. he waters both equally. he puts one plant outside. he puts another plant in a closet
which one is true about the plants?
A. the plant in closet will die.
B. plants only need soil to grow.
c. plants only need water to grow.
d.it does not matter where he puts the plant.
For the following equation; ____S8 + ___ O2 à ___ SO2 a. State what type of reaction is taking place? b. Balance the equation c. If we started with 4.0 grams of Sulfur, how many moles of Sulfur Dioxide would be produced? (You must show your work)
Answer:
a) Combustion
b) S8 + 8O2 -> 8SO2
c) 0.125 mol SO2
Explanation:
a) Combustion
b) S8 + 8O2 -> 8SO2
c)
[tex]4.0 g S8 (\frac{1 mol S8}{256 g S8})(\frac{8 mol SO2}{1 mol S8} ) =0.125 mol SO2[/tex]
Which of these is the BEST way to manage a natural resource?
A.
driving in a car as much as possible
B.
always leaving the water running while brushing your teeth
C.
planting trees as they are being cut down
D.
dumping chemical wastes into nearby lakes and rivers
The answer is C.
This can be concluded by looking at the other answers and eliminating them one-by-one.
Managing (Or conserving) a natural resource means to sustain it and use it as efficiently as possible.
With this in mind, we can look and eliminate certain answers.
A is incorrect because driving a car uses gas, a natural resource. By using as much gas as possible, the resource would be wasted instead of conserved.
B is incorrect because water is a natural resource. Once again, by using this, it's wasted where it could be conserved.
C is correct because planting trees would conserve the resource; by consistently planting trees where they're cut, the chances of running out of wood decrease.
D is incorrect because both the water and the creatures that live inside it are natural resources. By dumping toxic waste, these resources are wasted where it could be conserved.
Hope this helped you! :)
Answer:
C
Explanation:
this is pretty self explanatory
When white light is refracted through an object, you see many different colors because ________. (2 points)
Group of answer choices
the light bends enough to separate the colors
the object absorbs the colors and reflects them
the object causes the light to change directions
the white light travels in a straight line
Answer:
the object causes the light to change direction & the light bends enough to seperate the colors
also, tell me if i'm wrong
Is magnesium fluoride ionic or covalent
Answer:
lonic
Explanation:
MgF2 ( Magnesium fluoride ) is ionic.
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⊕ΘΞΠΤ⊕
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Final answer:
Magnesium fluoride (MgF₂) is an ionic compound formed by the transfer of electrons from metallic magnesium to nonmetallic fluoride, resulting in Mg2+ cations and F- anions held together by ionic bonds.
Explanation:
Magnesium fluoride (MgF₂) is an ionic compound. This is because it is formed from magnesium, a metal with a low electronegativity, and fluoride, a nonmetal with a high electronegativity. The electronegativity difference between magnesium and fluoride leads to the transfer of electrons from magnesium to fluoride, creating Mg2+ cations and F- anions. These ions are held together by strong electrostatic forces, known as ionic bonds, which result in the formation of an ionic solid. Ionic compounds have certain characteristics such as high melting points due to the strong ionic bonds in their lattice structure.
Examples of other ionic compounds include KCl, NaCl, and MgCl₂, all of which are made up of a metal and a nonmetal, just like magnesium fluoride. The type of bonding in a compound like MgF₂ also leads to properties such as poor conductivity in the solid state but the ability to conduct electricity when molten. This is because the ions are fixed in place in the solid lattice but can move freely when in the liquid state.
A balloon filled with helium has a volume of 30.0 L and a temperature of 15.0 C. What will the volume of the balloon be if the temperature is increased to 80.0 C and the pressure remains constant?
Answer: 36.8 L
hope this helps
Consider a sample of 11.2 g of ice initially at 0.0 C. How much energy in kilojoules is required to melt the ice and warm it to 22.0 C?
The molecular weight of water is 18.015 g/mol.
PLEASE HELP lol
Answer:
1034.88J
Explanation:
Given that:
mass (m) = 11.2 g, initial temperature = 0°C, final temperature = 22°C, the specific heat capacity of water (C) = 4.2 J/g°C
Temperature difference (ΔT) = final temperature - initial temperature = 22 - 0 = 22°C
The quantity of heat (Q) required to melt the ice can be calculated from the equation:
Q = mCΔT
Q = 11.2 g × 4.2 J/g°C × 22°C
Q = 1034.88J
Select all the correct answers.
What are some applications of fission reactions?
as a zero-waste energy source
for generating large amounts of heat
for creating stable elements from unstable ones
for creating new, heavier elements
n
as the energy source in nuclear weapons
Reset
Next
Some applications of fission reactions are for generating large amounts of heat and as the energy source in nuclear weapons.
What is a fission reaction?Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei.
Nuclear fission can be useful in terms of generating large amounts of heat that can be used to produce nuclear power and as the energy source in nuclear weapons.
Thus, some applications of fission reactions are for generating large amounts of heat and as the energy source in nuclear weapons.
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Answer:
B, C, E
Explanation:
2.
Which is the best example of an object that converts electric energy to heat energy?
lamp
toaster
radio
Answer:
Toaster
Explanation:
When you put a frozen food *aka waffles* in a toaster, it heats up, melting the ice and coming out crispy and crunchy.
~Jack Pullman
p.s. Mark for Brainiest!
Study the following picture. Which of the following statements is not a fact? The bins contain four different types of balls. Balls are used in various competitive sports. All balls are made from leather. According to the data (the picture in this case), the main color of a basketball is orange and the main color of a soccer ball is white.
Answer:
The one that isnt a fact is that all balls are made of leather.
Good luck! Hope this helped!
:)
Explanation:
HELP MEEEE ASAP!!! Answer these questions based on what you learned from the passage. You can assume any body structure comes from a human.
The flagella are like .
The pilli are like .
The capsule is like .
The cell wall is like the .
The ribosomes are like .
The nucleoid is like the .
The cell membrane is like .
The cytoplasm is like happens.
Answer:
1.Legs
2.Arms and hands
3.Armor
4.Skeletal
5.Carpenters
6.Brain
7.Skin
8.Blood
Explanation:
You can google dem and it will show you all the answers
Answer:
legs
arms and hands
skeletal system
carpenter
brain
skin
blood
Explanation:
How many forces act on each person? When they put there hands together or High five
Answer:
Left and right: two forces
Total: four forces
Explanation:
If it's just the forces that they are using it would be two the force of each person's hand on the other. However there is also gravity pulling down on their hand but they use another force to pull it up which you can call the normal force.
if this helped please hit the thanks button <3
Answer:
Left and right= two
So the total is four forces.
Mass defect for the isotope thorium-234 = 1.85864 amu.
How many kilograms does the mass defect represent?
A) 1.85864 × 10-10 kg
B)1.12 × 10- 22 kg
C)3.09 × 10-27 kg
D)1.66 x 10-27 kg
Answer:
3.09 × 10-27 kg
Explanation:
I also had this question on edge and got it correct
Answer:
the answer is C
Explanation:
just took this on eng2020
how many carbon atoms are present in a 2.5 carat diamond
The number of carbon atoms present in a 2.5 carat diamond is approximately 2.5 x 10^22, determined by first converting the weight of the diamond to grams, then to moles utilizing the molecular weight of carbon, and finally to atoms using Avogadro’s number.
Explanation:To determine the number of carbon atoms present in a 2.5 carat diamond, we need essential information about carbon and the diamond. The molecular weight of carbon (C) is 12.01 g/mol. We also know that a carat is 200 milligrams (mg) or 0.2 grams (g).
So, a 2.5-carat diamond weighs 0.2 g * 2.5 = 0.5g. We convert the mass of the diamond into moles using the molecular weight of carbon: 0.5 g / 12.01 g/mol = 0.0416 moles.
Then, knowing that one mole of any substance contains Avogadro's number of entities (approximately 6.022 * 10^23), we multiply the number of moles by Avogadro’s number: 0.0416 moles * 6.022 * 10^23 atoms/mole = 2.5 * 10^22 carbon atoms.
So, a 2.5 carat diamond contains about 2.5 * 10^22 carbon atoms.
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Write the balanced COMPLETE ionic equation for the reaction when KOH and Cu(NO₃)₂ are mixed in aqueous solution. If no reaction occurs, write only NR.
When KOH and Cu(NO3)2 are mixed in aqueous solution, no precipitation occurs as all ions remain solvated, hence the complete ionic equation shows no net change and is written as NR (no reaction).
Explanation:When KOH (potassium hydroxide) and Cu(NO3)2 (copper(II) nitrate) are mixed in aqueous solution, a double displacement reaction occurs. KOH is a strong base and fully dissociates into K+ and OH− ions in water. Cu(NO3)2 is a soluble salt and dissociates into Cu2+ and NO3− ions.
However, no precipitate is formed in this reaction since all the ions remain in solution. Therefore, the complete ionic equation is:
K+(aq) + OH−(aq) + Cu2+(aq) + 2NO3−(aq) → K+(aq) + 2NO3−(aq) + Cu2+(aq) + OH−(aq)
After canceling the spectator ions, we are left with NR (no reaction) since there is no net change in the species present in the solution.
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Which action represents an increase in entropy?
someone arranging a deck of cards in order from aces (low) to kings (high)
green food coloring diffusing through cookie dough
one end of a rod of steel getting warmer while the other end gets cooler
people arranging 80 cans into a pyramid
Answer:
Green food coloring diffusing through cookie dough.
Explanation:
Entropy is a physical quantity for an equilibrium thermodynamic system that measures the degree of organization of the system, or that is the ratio of an increase in internal energy to an increase in temperature of the system.
When the green dye diffuses through the cookie dough there is an increase in entropy, that is, there is an increase in system disorder at the molecular level, where a change in cookie dough occurs.
Answer:
B. green food coloring diffusing through cookie dough
Explanation:
How many moles of molecular oxygen will be needed for the complete combustion of 100.0 g of sulfur dioxide? The product of this reaction is sulfur trioxide
Answer:
0.78 mol O2
Explanation:
2SO2 + O2 -> 2 SO3
64 g SO2 -> 1 mol SO2
100 g SO2 -> x
x= (100 g SO2 * 1 mol SO2)/64 g SO2 x=1.56 mol SO2
1 mol O2 -> 2 mol SO2
x -> 1.56 mol SO2
x= (1.56 mol SO2 * 1 mol O2)/2 mol SO2 x=0.78 mol O2
Answer:
0.7804
Explanation:
What's the answer to this question?
A- 18.3 degrees
B- 124 degrees
C- 23.5 degrees
D- 50.2 degrees