CHEMISTRY COLLEGE

Ri1. Among these which is the example of compound?
a) sulphur
b) iron
c) ammonia
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Answers

Answer 1
Answer:

Answer:

Ammonia is a compound.

Explanation:

A compound is composed of two or more separate elements. Ammonia is NH3, which happens to be two different elements.

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Calculate the wavelength of A 75 kg athlete running a 7.0-minute mile

Answers

Answer:

\lambda =2.31x10^(-36)m

Explanation:

Hello,

In this case, since the Broglie's wavelength for bodies is defined via:

\lambda =(h)/(mv)

Whereas h accounts for the Planck's constant, m the mass and v the velocity, which is:

v=(1mile)/(7.0min)*(1609.34m)/(1mile)*(1min)/(60s)=3.83(m)/(s)

Thus, the wavelength turns out:

\lambda =(6.63x10^(-34)kg(m^2)/(s) )/(75kg*3.83(m)/(s) ) \n\n\lambda =2.31x10^(-36)m

Best regards.

Classify each substance based on the intermolecular forces present in that substance.A. Hydrogen bonding, dipole dipole, and dispersion
B. Dipole dipole and dispersion only
C. Dispersion only
1. H2O
2. CH4
3. CO
4. CH2Cl

Answers

               Intermolecular forces

  1. When H2O- Hydrogen bonding, dipole-dipole, and also dispersion
  2. Then CH4- Dispersion only
  3. After that CO- Dispersion only
  4. Then CH2Cl- Dipole-dipole and also dispersion only

Explanation:

  • When Dipole-dipole interactions exist only in molecules that have a dipole moment such as water and also that dichloromethane.
  • After that Water experiences intermolecular hydrogen bonding in addition to dipole-dipole interaction and also that dispersion forces due to the O-H bond in the molecule.
  • Thus, Nonpolar compounds only have dispersion forces acting between their molecules.

Find out more information about dispersion here:

brainly.com/question/3224009

Answer:

H2O- Hydrogen bonding, dipole dipole, and dispersion

CH4- Dispersion only

CO- Dispersion only

CH2Cl- Dipole dipole and dispersion only

Explanation:

Dipole- dipole interactions exist only in molecules that have a dipole moment such as water and dichloromethane. Water experiences intermolecular hydrogen bonding in addition to dipole-dipole interaction and dispersion forces due to the O-H bond in the molecule.

Nonpolar compounds only have dispersion forces acting between its molecules.

How many chlorine atoms are there in 2 molecules of ICl?

Answers

Answer: 38 chlorine atoms are in 3 molecules of HCI

Explanation:

Final answer:

In 2 molecules of ICl, there would be 2 atoms of Chlorine, as the subscript of Chlorine in the compound ICl is 1.

Explanation:

In a compound, the subscript of an element indicates the number of atoms of that element present per molecule of the compound. For the ICl compound, there is one atom of Chlorine in one molecule. Therefore, in 2 molecules of ICl, there would be 2*1 = 2 atoms of Chlorine.

Learn more about Atoms in a Molecule here:

brainly.com/question/15172278

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A baker touches a pie right after taking it out of the oven. Which statement best explains why the pie feels hot?A.Molecules in the skin move faster than molecules in the pie, so heat is transferred to the pie.
B.Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin.
C.Molecules in the skin move faster than molecules in the pie, so heat is transferred to the skin.
D.Molecules in the pie move faster than molecules in the skin, so heat is transferred to the pie.

Answers

The answer is letter B, because according to the Second Law of Thermodynamics heat can only move from a hotter body to one of colder temperature. So that's your answer: as the molecules in the pie move faster (are hotter) than the ones in the skin, heat is transfered from the pie to the skin.

Answer:

Hello! The answer would be B

"Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin"

Explanation:

:')

What is the covalent bond for CO?​

Answers

Answer:

Covalent bond or common bond is one of the types of chemical bonds. This connection arises from electronic participation. In fact, atoms that need to receive electrons to achieve stable electron arrangement (noble gas electron arrangement or octagonal arrangement) share electrons in their valence layer with other atoms. In this case, the transfer of electrons from one atom to another does not take place, but only a pair of electrons, called a bonded or shared electron pair, belongs to the nucleus of two atoms.

Which of the following statements about moles is FALSE?SELECT AN ANSWER

One mole of carbon would contain 6.02 x 1023 carbon atoms, but one mole of chlorine would contain 6.02 x 1023 diatomic chlorine molecules.


For ionic compounds, the representative particle is the formula unit of the compound (eg. NaCl).


One mole of water (H2O) contains 6.02 x 1023 atoms.


Avogadro's number is the number of discrete, representative units found in one mole of a substance.

Answers

Answer:

Option C

Explanation:

Avogadro number represent discrete unit of a substance which can be atom, molecule, ion etc.

In one mole of H2O there will be 6.02 x 1023 molecules and not atoms.

Molecule of H2O is the discrete unit of water mole and not atom.

Hence, option C is correct choice of answer
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