Copper is a conductor because its valence electron can move freely from atom to atom. Option (B) is correct answer.
What is Insulator ?
Insulator is a material which does not conduct any current. Non metals are insulators. Electrons do not move freely in insulator. Thermal conductivity of insulator very is low and its resistance is vey high. These are used in making insulating electrical equipment.
What is Conductor ?Conductor is a substance which allow the electricity to flow through it. Metals are conductors. Electron can move freely in conductors. Thermal conductivity of conductor is very high and its resistance is vey low. These are used in making the electrical equipment.
Now let check all options one by one:
Option (A): Copper is a conductor not an insulator. Copper is a metal and it consists free electrons and electron can move freely from one atom to another atom.
So, option (A) is incorrect.
Option(B): Copper is a conductor because its valence electron can move freely from atom to atom. As copper is a metal it is a good conductor of electricity. The thermal and electrical conductivity of copper is high.
So, option (B) is correct.
Option (C): Copper is not an insulator it is conductor as already discussed in option (A).
So, option (C) is also incorrect.
Option (D): Copper is a conductor because its electron can move freely and it is a good thermal conductor.
So, option (D) is also incorrect.
Thus, from above conclusion we can say that Copper is a conductor because its valence electron can move freely from atom to atom.
Hence, option (B) is correct answer.
Learn more about Conductor and Insulator here: https://brainly.com/question/492289
#SPJ2
Based on your conductivity values, do the Group A compounds appear to be molecular, ionic, or weak acids? Would you expect them to partially dissociate, completely dissociate, or not dissociate at all ?
Answer:
See Explanation
Explanation:
If we consider the conductivity values of group A compounds, we will notice that all group A compounds all possess a very high conductivity values each.
These high conductivity values are consistent with ionic compounds which completely dissociate in solution thereby making mobile ions available.
Hence, group A compounds are ionic and completely dissociate in solution.
A student wants to determine if a
sample of tap water contains Mg+2.
Which of the following pieces of
information are not needed to do a
titration ?
Answer:
The Density of Magnesium.
Explanation:
which of the following measurements involve a direction? ( select all that apply)
A. acceleration
B. velocity
C. distance
D. mass
~I will give the brainliest~
How does temperature affect the rate constant for a reaction?
A. increasing temperature exponentially increases the rate constant
B. increasing temperature linearly increases the rate constant
C. increasing temperature exponentially decreases the rate constant
D. increasing temperature linearly decreases the rate constant
E. temperature has no effect on the rate constant
How many liters of O2 at STP will react with 8.7 grams of C2H2 to form CO2 and H2O?
Answer:
The answer is 19.0
Explanation: Trust me
Direction: Read each situation in the table below, then state if it is a density-independent limiting factor or a density-depent limiting factor. Indicate the specific limiting factor that is occuring.
☞︎︎︎Please help me☜︎︎︎
❌NONSENSE➪ REPORT❌
Answer:
1. Dependent, carrying capacity
2. Dependent, dinoflaggelates
3. Independent, oil spill
4. Dependent, virus
5. Independent, typhoon
6. Independent, deforestation
7. Dependent, predation
8. Dependent, human exploitation
9. Dependent, virus
10. Independent, oxygen depletion
Explanation:
Balance the following Chemical Equation:
NaBr +CaCl2-> NaCl+ CaBr2
what is the mass of 0.200 mol of calcium
What is the majority of a solution that contains 0.55 mole of HCl in water to make 1.50 L HCl solution?
Answer:
0.367M
Explanation:
Molarity refers to the molar concentration of a solution. It can be calculated using the formula below:
Molarity = n/V
Where;
n = number of moles (mol)
V = volume (L)
According to the given information in this question;
n = 0.55 mole
V = 1.50 L
Molarity = 0.55/1.50
Molarity = 0.367M
What was the name of the main scientist for the Manhatten Project
Answer:
Leo Szilard
Explanation:
Answer:
Robert Oppenheimer
Explanation:
Pls mark me brainless
what type of reaction takes place when bromine reacts with iron iodide
Answer:
If you pass bromine vapour over hot iron, a similar but slightly less vigorous reaction happens, this time producing iron(III) bromide. Anhydrous iron(III) bromide is usually produced as a reddish-brown solid. Again the iron has been oxidised to an oxidation state of +3.
Explanation:
How many moles of Ca(OH)2 are needed to make 200.0 mL of 0.250 M solution? Ca(OH)2
Answer:
0.05 moles of Ca(OH)2
Explanation:
The formula for molarity is: mol/L = M
First, convert 200.0 mL to L.
200 mL/1000 = 0.2 L
Next, plug in the values given.
mol/0.2 = 0.250
Rearrange the equation.
mol = 0.2*0.250
mol = 0.05
If you'd like to check it, simply plug in 0.05 to mol and divide it by 0.2. In theory, you should get 0.250.
Ammonia gas (NH3) combines with oxygen gas (O2) to form diatomic nitrogen gas and water vapor. If 4.0 grams of ammonia react, how many liters of nitrogen gas are produced? The gas is collected at 32.00°C and a pressure of 2.6 atmospheres.
Answer:
1.13 L
Explanation:
First, we have to write the chemical equation for the reaction between ammonia gas (NH₃) and oxygen gas (O₂) to give nitrogen gas (N₂) and water (H₂O), as follows:
NH₃(g) + O₂(g) → N₂(g) + H₂O(g)
Then, we have to balance the equation (we write first the coefficient 2 for NH₃ to balance N atoms, then a coefficient of 3 for H₂O to balance H atoms, and finally 1/3 to balance the O atoms):
2 NH₃(g) + 3/2 O₂(g) → N₂(g) + 3 H₂O(g)
In the balanced equation, we can see that 1 mol of N₂ is produced from 2 moles of NH₃. We convert the moles of NH₃ to grams by using its molecular weight (MW):
MW(NH₃) = 14 g/mol N x 1 + (1 g/mol H x 3) = 17 g/mol
grams of NH₃ = 17 g/mol x 2 = 34 g
Thus, we have the stoichiometric ratio:
1 mol of N₂/2 mol NH₃ = 1 mol of N₂/34 g NH₃
To calculate how many moles of N₂ are produced from 4.0 of NH₃, we multiply the mass by the conversion factor:
4.0 g NH₃ x 1 mol of N₂/34 g NH₃ = 0.1176 moles N₂
Finally, we calculate the liters of N₂ gas by using the ideal gas equation:
PV = nRT ⇒ V = nRT/P
We introduce the data in the equation:
T = 32.00°C + 273 = 305 K
P = 2.6 atm
R = 0.082 L.atm/K.mol (is the gas constant)
n= 0.1176 moles
⇒ V = nRT/P = (0.1176 mol x 0.082 L.atm/K.mol x 305 K)/(2.6 atm)
= 1.13 L
Indicate whether the formation of each ion involved a loss or gain of electrons, and state the number of electrons that were lost
Answer:
The sign of the charge on an ion indicates the number of electrons gained or lost by the neutral atom. An ion with +1, +2 or +3 charge, has lost 1, 2 or 3 electrons respectively. An ion with a -1, -2, or -3 charge has gained 1, 2or 3 electrons respectively.
Note: The question did not state the ions in question.
Explanation:
Ions are formed when neutral atoms gain or lose electrons. There are two types of ions; cations and anions.
Cations are positively-charged ions which are formed when neutral atoms lose electrons. Cations are formed by metallic elements as they have a greater tendency to give up their electrons in order to form ions, i.e. they are electropositive elements. Examples of cations include Na+, Ca²+, Al³+, Fe³+, etc.
Anions are negatively-charged ions which are formed when neutral atoms gain electrons. Anions are formed by non-metallic elements as they have a greater tendency to accept electrons in order to form ions, i.e. they are electronegative elements. Examples of anions include; Cl-, O²-, N³-, etc.
The sign of the charge on an ion indicates the number of electrons gained or lost by the neutral atom. An ion with +1, +2 or +3 charge, has lost 1, 2 or 3 electrons respectively. An ion with a -1, -2, or -3 charge has gained 1, 2or 3 electrons respectively.
1. True or False: Fungi are reproduced through the spread of spores.
O True
O False
Answer:
True
Explanation:
Fungi reproduce by spawning absurd amount of spores greatly increasing the survival rate of the fungi.
Answer:
true
Explanation:
351 Joules of energy was released when a 12 gram sample of unknown metal with an initial temperature of 90 °C was cooled down to 25 °C Describe the direction of heat flow between the metal and the water. (4 pts)
Answer:
Naturely, the direction of the heat flow is from zone of high temperature to zones of low temperature. Hence, the direction of heat flow is from the sample of unknown metal and surrounding water until thermal equilibrium in the water-sample system is reached.
Explanation:
Naturely, the direction of the heat flow is from zone of high temperature to zones of low temperature. Hence, the direction of heat flow is from the sample of unknown metal and surrounding water until thermal equilibrium in the water-sample system is reached.
How should the following reaction be classified?
CaCo3 → CaO + CO2
A. combustion
B. decomposition
C. single displacement
D. synthesis
E. double displacement
What are 6 definitions of mole in chemistry please help
Answer:
a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
Explanation:
what part of the electromagnetic spectrum was first developed during ww2
Answer:
Radio waves were first developed in WWII
Explanation:
Mark me Brainliest?
.?lkikjjjmmjj
hhhhgyhhjjj
Answer:
ertyuioekgdctifrofy?
Explanation:
In a spacecraft, the carbon dioxide exhaled by astronauts can be removed by its reaction with lithium hydroxide according to the following equation:
How many moles of lithium hydroxide are required to react with 19.2 mol CO2, the average amount exhaled by a person each day?
In the Reaction: Pb(NO3)2 + 2 Kl —> Pbl2 + 2 KNO3
How many grams of lead (II) iodide, Pbl2, is produced from 82.7 grams of potassium iodide, KI?
Round to two decimal places.
Answer:
114.8g PbI2 are produced
Explanation:
To solve this question we must convert the mass of KI to moles using its molar mass (KI = 166.0g/mol). As 2 moles of KI produce 1 mole of PbI2 we can find its moles and its mass (Molar mass PbI2: 461.01g/mol) as follows:
Moles KI:
82.7g KI * (1mol / 166.0g) = 0.498 moles KI
Moles PbI2:
0.498 moles KI * (1mol PbI2 / 2mol KI) = 0.249 moles PbI2
Mass PbI2:
0.249moles * (461.01g/mol) =
114.8g PbI2 are producedSelect the correct answer.
In an isolated system, two copper bars at different temperatures transfer energy until both are at the same temperature. How would the
transfer of energy be different if the bars were in an open system?
O A. Energy transfer would occur only between the copper bars.
OB. Energy transfer would occur between the copper bars and the surroundings.
Ос. No energy transfer would occur between the copper bars or the surroundings.
OD. Energy transfer would occur only with the surroundings.
Reset
app.edmentum.com/assessments delivery/ua/la/launch/49382676/45422878/aHROCHM6Ly9MMISHCHAUZWRIZWOWOuY29tL2XIYXJuZXItdWkvdXNlci1hc3NpZ250ZW5OLZOSMzgyNjc212xhaW5/aHaHZCSONTOM
San ou
Answer:
OB. Energy transfer would occur between the copper bars and the surroundings.
Explanation:
We define an isolated system as a system in which there is neither exchange of material nor energy while an open system is one in which materials and energy can be exchanged with the environment.
Given an open system consisting of two copper bars at different temperatures, energy will not only be exchanged between the copper bars but also between the copper bars and the environment.
A bottle of Hydrogen Peroxide is labeled 9.5% by volume. How many milliliters of H2O2 are in 480.00ml bottle of this solution
Answer:
45.6 millilitres of hydrogen peroxide are in 480.00 mL of 9.5% by volume hydrogen peroxide solution
Explanation:
A percentage solution of Hydrogen peroxide is a volume per volume percentage solution. This means that each given percentage solution is expressed as a given mL of the substance found in 100 mL of solution.
A 9.5 percentage hydrogen peroxide solution contains 9.5 mL of hydrogen peroxide in 100 mL of solution.
Millitres of hydrogen peroxide found in 480.00 mL of solution = 9.5/100 × 480 mL = 45.6 mL
Therefore, 45.6 millilitres of hydrogen peroxide are in 480.00 mL of 9.5% by volume hydrogen peroxide solution
17 moles of oxygen is equals to how many grams
17 × ( 2 × 16 ) = 17 × 32 = 544 grams
___________________________
PLEASE HELP
What happens to the solubility of a solute when the solution is heated? And what would you expect to happen to a solution that is saturated at a high temperature when it is cooled?
Answer:
The solubility of a solute becomes weaker and changes it’s solid state when heated because it causes the molecules to dissolve faster. If the solution was cooled, it would begin to regain its solid form as it’s molecules would be slowing down. I hope this helps!
how many atoms are in 4.5 moles of Al?
Explanation:
4.5×6.022×10²³
27.099×10²³
According to Avogadro's number, there are 27.10×10²³ atoms in 4.5 moles of Al.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.As 1 mole =6.023×10²³ atoms , thus,4.5 moles =4.5×6.023×10²³ = 27.10×10²³ atoms.
Thus, there are 27.10×10²³ atoms in 4.5 moles of Al.
Learn more about Avogadro's number,here:
https://brainly.com/question/11907018
#SPJ2
What is the function of these organelles?
Answer:
Endoplasmic reticulum, Golgi apparatus, Nucleus, Storage Organelles, and Energy - Producing Organelles.
Explanation:
Hope its right! Mark me as Brainliest if it it right ;)!
Which two parts do the capillaries surround? *
In molecules, energy is stored in?
Atoms
Electrons
The Nucleus
Bonds
Answer:
Atoms
Explanation:
Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy.
