1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
horrorfan [7]
3 years ago
8

Which element is malleable and conducts electricity?(1) iron (3) sulfur(2) iodine (4) phosphorus

Chemistry
2 answers:
Alenkinab [10]3 years ago
5 0

Answer: The correct option is (1).

Explanation:

Properties of metals :

  • They have malleable property due to this metals can be drawn into thin sheets
  • They have lustrous surface.
  • They have ductile property due to this metals can be drawn into wires.
  • They are good conductors of electricity.

Iron have the property of malleability and conducts electricity.

kondaur [170]3 years ago
4 0
The element iron is malleable and conducts electricity.

Answer: (1) iron
You might be interested in
Calculate the nuclear binding energy for 5525mn in megaelectronvolts per nucleon (mev/nucleon).
r-ruslan [8.4K]

To solve this question, let us first calculate how much all the nucleons will weigh when they are apart, that is: 
<span>Mass of 25 protons = 25(1.0073) = 25.1825 amu </span>

Mass of neutrons = (55-25)(1.0087) = 30.261 amu 

So, total mass of nucleons = 30.261+25.1825 = 55.4435 amu 

<span>Now we subtract the mass of nucleons and mass of the Mn nucleus:
55.4435 - 54.938 = 0.5055 amu 

This difference in mass is what we call as the mass defect of a nucleus. Now we calculate the binding energy using the formula:</span>

<span> E=mc^2 </span>

<span>But first convert mass defect in units of SI (kg):
Δm = 0.5055 amu = (0.5055) / (6.022x10^26) 
<span>Δm = 8.3942x10^-28 kg</span>

Now applying the formula, 
E=Δm c^2 
E=(8.3942x10^-28)(3x10^8)^2 
E=7.55x10^-11 J</span>

 

Convert energy from Joules to mev then divide by total number of nucleons (55):

E = 7.55x10^-11 J * (6.242x10^12 mev / 1 J) / 55 nucleons

<span>E = 8.57 mev / nucleon</span>

8 0
3 years ago
Rounded to the nearest whole number, how many electrons are in an atom of zirconium?
Dafna1 [17]

Answer:

40 electrons

Explanation:

The element of zirconium (Zr) has an atomic number of 40, which means it has 40 protons and 40 electrons. It also has a molar mass of 91.224 g/mol.

6 0
2 years ago
According to kinetic molecular theory, which of the following would not be considered an ideal gas
RideAnS [48]

Answer:

A gas at very low volumes, when gas particles are very close together

A gas at very low temperatures, when gas particles have very little kinetic energy

A gas with highly polar molecules that have very strong inter-molecular forces

Explanation:

The Kinetic Molecular Theory:

  • particles in a gas are in constant, random motion
  • combined volume of the particles is negligible
  • particles exert no forces on one another
  • any collisions between the particles are completely elastic
  • average kinetic energy of the particles is proportional to the temperature in kelvins

RM / NV / NF / EC / ET

Although none of the assumptions provided in the molecular theory of gases are strictly correct, they are fair enough for modeling some systems. It is an idealized approach of real systems. The fundamental presumptions are nearly identical to those of an ideal gas.

The most logical of the hypotheses is that of elastic collisions. Since gas molecules are treated as perfectly hard spheres in Newton's equations and elastic collisions, there is no energy lost in compressing the gas molecules during a collision.

For bulk, light gases at moderate temperatures and low to moderate pressures, it is acceptable to assume that there is an attractive force between the gas and the container wall. Since the walls of the containers only account for a minor portion of collisions in macroscopic quantities, they can typically be disregarded. Only until the gas's total density exceeds the kinetic energy do forces between its particles start to become significant. For light gases like He and straightforward diatomic gases, the kinetic energy of the gas molecules far outweighs the intramolecular interactions at normal temperatures.

But in a complete way of the KM theory being described:

The microscopic characteristics of atoms (or molecules) and their interactions, which result in observable macroscopic qualities, are described by the kinetic molecular theory of matter (such as pressure, volume, temperature). The idea may be used to explain why matter exists in distinct phases (solid, liquid, and gas), as well as how matter can transform between these phases.

The three states of matter are: As we transition from the solid to the gaseous phase, you'll notice that the distance between atoms or molecules widens.

According to the kinetic molecular theory of matter,

  • Particles that make up matter are continually moving.
  • Every particle has energy, however the amount of energy changes with the temperature of the sample of matter. Thus, whether the material is in a solid, liquid, or gaseous form is determined. The least energetic molecules are those in the solid phase, whereas the most energetic particles are those in the gas phase.
  • The average kinetic energy of the particles in a material may be calculated from its temperature.
  • When the particles' energies are altered, the phase of the particles may vary.
  • Matter atoms are separated by gaps. As a sample of matter transitions from the solid to the liquid and gas phases, the average amount of vacant space between molecules increases.
  • Atoms and molecules interact by attraction forces, which intensify as the particles draw closer to one another. Intermolecular forces are the name for these pulling forces.
<h2>How does kinetic molecular theory affect gases?</h2>

According to the Kinetic Molecular Theory, gas particles collide in an elastic manner and are always in motion. Only absolute temperature directly affects a group of gas particle's average kinetic energy.

Part I of How the Kinetic-Molecular Theory Explains Gas Behavior.

If the volume is kept constant, the faster gas molecules collide with the container walls more frequently and more violently, raising the pressure according to Charles' law.

6 0
2 years ago
Read 2 more answers
Convert 121 Cal to kilowatt-hours
gulaghasi [49]

Answer:

here

Explanation:

0.000141 to kilowatt-hours. hope this helped

6 0
3 years ago
Why is chemistry important in the study of biology? The body is composed of chemical elements. Chemical reactions occur in the b
Ede4ka [16]
All of the above.
................
:)

7 0
3 years ago
Read 2 more answers
Other questions:
  • The reported molar mass for the copper oxide formed in experiment 1 is 79.55 g/mol. what is the molecular formula of the oxide f
    9·1 answer
  • A 15.0 mL sample of 0.013 M HNO3 is titrated with 0.017 M CH$NH2 which he Kb=3.9 X 10-10. Determine the pH at these points: At t
    15·1 answer
  • Which oxide(s) of manganese have a mass percent of the metal that is greater than 50%?MnO MnO2 Mn2O3All of these102
    11·1 answer
  • Oil and fat containing food items are flushed with nitrogen. Why?
    12·2 answers
  • How does the mass and size of an atom compare to the mass and size of the nucleus
    5·2 answers
  • If you look at the reflection of your face on the back of a spoon, your face will be right-side up. If you flip the spoon to the
    14·2 answers
  • Help plz:))) I’ll mark u brainliest <br><br> An element in period 3 that has 1 valence electron.
    6·1 answer
  • How many valence electrons are transferred to the oxygen atom from potassium atoms in the formation of the compound potassium ox
    15·1 answer
  • Plz help ASAP <br> Dhdhdg
    7·1 answer
  • One of the compounds used to increase the octane rating of gasoline is toluene (right). Suppose 20.0 mL of toluene (d = 0.867 g/
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!