Answer:
The thicker the metal, the harder it is for the magnet to attract more paper clips.
Explanation:
There exists a relationship between the paper and the paper clip. The more is the thickness of the paper the stronger the paper clip will be. As size has the ability to attract and affect.
In another sense the stronger is the metal of the paper clip the tighter will be the element of the magnet Thus more will be the ability of the magnet to keep hold of the paper. Hence the closer is the magnet the more is the grip.Learn more about the relationship between the thickness of the book.
brainly.ph/question/4895114.
Write the name of the covalent compound ON.
Answer:
the answer is oxygen mononitride
99% 1H
0.8% 2H
0.2% 3H
Average Atomic Mass = [answer] amu
PLEASE HELP ME
Answer: 1.01 atomic mass units or amu
Explanation:
Which statement is true of all chemical reactions? They can go in just one direction. They can go in just one direction. They occur only in science labs. They occur only in science labs. They break and reform bonds. They break and reform bonds. They create new elements.
Answer:
They break and reform bonds
Explanation:
Chemical reactions basically refer to the transformation of a substance (reactant) to another substance (products).
So we have;
Reactant --> Product
They can go in just one direction.
This option is wrong, because there are reversible reactions which can go in both directions. That is reactants reactants to form products and products react to form reactants.
They occur only in science labs.
This is wrong because chemical reactions occur in our day to day activities. An example is rusting.
They break and reform bonds.
This option is correct. There is breaking of bonds in the reactants and forming of new bonds in the products.
They create new elements
Atoms or elements are not created nor destroyed in chemical reactions so this option is wrong.
Which force saves the atom by emitting particles from the nucleus
Answer:
nuclear force
Explanation:
A 0.85% saline solution is: a.8.5 mL of saline added to 91.5 mL of water b.85 g of NaCl made up to 1,000 mL of water c.0.85 g NaCl made up to 100 mL of water d.8.5 g NaCl in 100 mL of water
Answer:
c
Explanation:
A 0.85% saline solution would consist of 0.85 g NaCl made up to 100 mL of water.
A 0.85% saline solution contains 0.85% by weight of NaCl. Hence, in order to prepare such a solution, 0.85 g of NaCl is weighed out into a beaker or cylinder and distilled water is added up to the 100 mL mark. On the other hand, 8.5 g of the NaCl can be weighed out and then distilled water added to 1000 mL mark.
The correct option is, therefore, c.
Which of the following is considered the first receiver for the nicotine in a smoking person?
1.left atrium
2.right atrium
3.left ventricle
4.right ventricle
Answer:
i think right artrium but not full aure
Who do you think we (humans) are more related to bats, or chickens?
Answer:
prolly chickens
1. Does elevation play a factor? If so, can the elevation be changed to protect the homes? 2. Could the residents build a structure that would prevent a tsunami from reaching the community? What would this structure look like? How would the residents build it? 3. What could limit the erosion of the beach?
Answer:
Yes.
Explanation:
Yes, elevation play a great role and has the ability to protect homes from natural disasters such as flood and tsunami etc. The residents build a hard structure of wall along the beach that would prevent a tsunami from reaching the community and also built homes at higher elevation. The residence built it with the help of government and this wall is also effective in reducing the erosion of the beach.
Answer:
1. Yes elevation does play a factor if the house was higher i feel like it wouldnt get as damaged
2. Yes they could build a high enough wall that it would take most of the impact away from the houses, you would build it with the thickest peice of wood that you could find and use long screws and cement the wood into the ground.
3. The wall will also help from erosion
Explanation: i got it right on my project.
The specific heat of aluminum is 0.88 J/g°C. How many joules will it take to make the temperature of a 50. g nugget go up from 20.°C to 70.°C?
Answer:
2200J
Explanation:
Given parameters:
Specific heat of aluminum = 0.88J/g°C
Mass of nugget = 50g
Initial temperature = 20°C
Final temperature = 70°C
Unknown:
Quantity of heat required for the heating = ?
Solution:
To solve this problem, we use the expression below;
H = m c Δt
H is the quantity of heat
m is the mass
c is the specific heat capacity
Δt is the change in temperature
H = 50 x 0.88 x (70 - 20) = 2200J
What is the difference between a plain and a plateau? A. Only a plain is flat, a plateau is steep mountainside. B. Both are flat, but a plateau is bordered by cliffs. C. A plain is rolling hills with cliffs, and a plateau is large flat area.
Answer:
B
Explanation:
Both plain and plateau have flat surfaces. However, a plain is located in a low-lying area while a plateau is located on an elevated area. In essence, a plateau can be viewed as an elevated plain or a plain that is bordered by cliffs.
The correct option is B.
Which of the following elements has the highest atomic radius, Sr or Cu
Answer:
Sr or Strontium
Explanation:
sr: strontium has atomic radius of 255pm
cu: copper has an atomic radius of 128pm
they teach you in chem how to do it based off the chart but I don't remember that method
A. 1720 kJ
B. 125.6 kJ
C. 3440 kJ
D. 4730 kJ
Answer:
Q = 3440Kj
Explanation:
Given data:
Mass of gold = 2kg
Latent heat of vaporization = 1720 Kj/Kg
Energy required to vaporize 2kg gold = ?
Solution:
Equation
Q= mLvap
It is given that heat required to vaporize the one kilogram gold is 1720 Kj thus, for 2 kg
by putting values,
Q= 2kg × 1720 Kj/Kg
Q = 3440Kj
What would you observe in the following cases:
(1) Sodium and potassium are placed in hot water
(ii) Burning magnesium is introduced into steam?
dium and iron with water
Answer:
See explanation
Explanation:
When introduced to hot water, sodium and potassium metals react violently to form a colourless solution and hydrogen gas. The metal becomes spontaneously ignited and burns with its characteristic flame colour.
Magnesium burns with a bright white flame to yield solid magnesium oxide
and hydrogen gas when steam is passed over heated magnesium.
The last question is not clear but I believe that it has to do with reaction of sodium and iron with water. Sodium reacts violently with cold water at room temperature to evolve hydrogen gas and aqueous sodium hydroxide.
Iron reacts with steam at red heat to yield hydrogen gas and Fe3O4
when 3.18 g of copper (||) oxide were carefully heated in a stream of dry hydrogen, 2.54 g of copper and 0.72 g of water were formed determine the number of moles of hydrogen atoms which combine with one mole of oxygen atoms
Answer:
the number of moles of atom is 0.91584
What is an example of a congenital disorder
Answer:
down syndrome
Explanation:
What is the energy of a photon (J) that has a wavelength of 105 nm?
Answer:
E = 1.89×10⁻¹⁹ J
Explanation:
Given data:
Wavelength of photon = 105 nm (105 ×10⁻⁹ m)
Energy of photon = ?
Solution:
Formula:
E = hc/λ
h = plancks constant = 6.63×10⁻³⁴ Js
c = speed of wave = 3×10⁸ m/s
by putting values,
E = 6.63×10⁻³⁴ Js ×3×10⁸ m/s / 105 ×10⁻⁹ m
E = 19.89×10⁻²⁶ J.m / 105 ×10⁻⁹ m
E = 0.189×10⁻¹⁷ J
E = 1.89×10⁻¹⁹ J
Demonstrate that kgL^1 and gcm^3 are
equivalent units of density
1 kg = 1000g
1l = 1000cm3
therefor
kg/l = 1000g/1000cm3
cancel the zeros
kg/l = g/cm3 demonstrated
HELP PLEASE ASAAPPP!!!How many atoms of silicon would there be in a sample that contained 4.66 x 1030
grams? ANSWER CHOICES INCLUDED IN IMAGE ABOVE
Answer:
there is no image
Explanation:
can you maybe ask the question again with the image?
Answer:
put an image please i don't understand
which best explains why estuaries are an important habit for many Marine organisms in comparison to the open ocean?
A) there is less food in the estuaries
B) there are more predators in estuaries
C) there is more salt available in estuaries
D) there are more nutrients available in estuaries
which best explains why estuaries are an important habit for many Marine organisms in comparison to the open ocean?
Answer:-there are more nutrients available in estuaries
Extra information:-Open ocean:-The Open ocean is also known as pelagic zone.It is the area of the ocean which is outside of coastal areas. The open ocean lies over the continental shelf. The seafloor is not included in the open ocean.Haley is trying to pull an object upward. The below forces are acting on the object.
Fp= 5500 N
Fg= 6000 N
Which represents the net force?
← 500 N
→ 500 N
↑ 500 N
↓ 500 N
Explanation:
it's answer is last
hope it helps you
↓ 500 N represents the net force as the force is acting in downward direction.
What is force?
Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.
It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.
The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.
Learn more about force,here:
https://brainly.com/question/30507236
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What is another name for the galvanic cell?
O A. The voltaic cell
O B. The salt bridge
O C. The potential cell
O D. The redox cell
Answer:
The Voltaic Cell
Explanation:
Answer: A
Explanation: i just took the test :)
what does ǵene of interest¨ mean ?
The initial temperature of a bomb calorimeter is 28.50°C. When a chemist carries out a reaction in this calorimeter, its temperature decreases to 27.45°C. If the calorimeter has a mass of 1.400 kg and a specific heat of 3.52 J/(gi°C), how much heat is absorbed by the reaction?
Use q equals m C subscript p Delta T..
140 J
418 J
1,470 J
5,170 J
Answer:
The correct answer is 5,170 J
Explanation:
The heat absorbed by the reaction (Qr) is equal to the heat released by the calorimeter (Qcal):
Qr = - Qcal
We calculate Qcal from the mass of the calorimeter (m), the specific heat (Cp), and the change in temperature (ΔT), as follows::
Qcal = m x Cp x ΔT
We have the following data:
m = 1.400 kg x 1000 g/1 kg = 1,400 g
Cp = 3.52 J/g°C
Initial T = 28.50°C + 273 = 301.50 K
Final T = 27.45°C + 273 = 300.45 K
ΔT = Final T - Initial T = 300.45 K - 301.50 K = -1.05 K
So, we introduce the data in the mathematical expression for Qcal:
Qcal = m x Cp x ΔT = 1,400 g x 3.52 J/g°C x (-1.05 K) = -5,174.4 J ≅ -5,170 J
Therefore, the heat absorbed by the reaction is:
Qr = - Qcal = -(-5,170 J) = 5,170 J
Answer:
D
Explanation:
Just took the test.
disadvantages of Mendeleev's periodic table
Answer:
Various limitations of Mendeleev's periodic table are:-
Position of hydrogen - he couldn't assign a correct position to hydrogen as it showed properties of both alkali and halogens .
Position of isotopes - he considered that the properties of elements are a function of their atomic masses. Hence isotopes of a same element couldn't be placed.
In the d-block , elements with lower atomic number were placed before higher atomic number.
Explanation:
Warm air rising at the equator and cold air sinking at the poles is an example of…
Answer:
atmospheric circulation
Explanation:
Atmospheric circulation occurs because the Sun heats the Earth more at the equator than at the poles.
Warm air is known to rise at the tropics which lies closer to the equator and moves towards the poles. Atmospheric circulation is driven by the rotation of the earth.
The air cools and flows back towards the Equator to be warmed up again. A sort of convection current is thereby set up.
How many neutrons are present in an atom of
What is a radio wave?
Answer:
Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios.
i will give brainliest
Which statement best describes the direction of force shown by the magnetic
field lines around a bar magnet?
A. Away from both the magnet's north and south poles
B. Toward both the magnet's north and south poles
C. From the magnet's north pole to its south pole
D. From the magnet's south pole to its north pole
Answer:
I believe the amswer is a hope this helps
Answer:
c
Explanation:
hope you can redo it to get it right
What historical event of commercial interest triggered investigation in the science of steam?
Answer: Photosynthesis
Explanation:
4. What gives blood its red color?
a. hemoglobin
O
b. red blood cells
O
c. platelets
d. plasma
Answer:
the best answer would be A
Explanation:
cause it contains a red colored compound.