How many thorium atoms would have to be lined up side by side to span 1.80 mm ?

Answer: Option (1) is the correct answer.

Explanation:

Kinetic energy is the energy that arises due to the motion of molecules. Average kinetic energy involves the sum of vibrational, translational and rotational kinetic energies.

When we decrease the temperature then the movement of molecules starts to decrease. As a result, there will be decrease in the average kinetic energy of its particles.

Thus, we can conclude that as the temperature of a substance decreases, the  average kinetic energy of its particles decreases.

There are two types of mixture depending on the distribution of the components in the mixture. Homogeneous mixtures are mixtures which has uniform properties all throughout the solution while heterogeneous mixtures are the opposite they do not exhibit uniformity in any property. Example for a homogeneous is a salt solution where at any point you get a sample the properties are the same. For the heterogeneous mixture, a mixture of sand and salt where at any sampling point the properties are not the same.

suspension should be correct

a suspension

the particles are big enough to settle

a colloid

the particles are too small to ever settle

a solution

homogeneous mixture of two or more substances

Final answer:

There are approximately 1.0545 x 10^24 atoms in 1.75 mole of CHCl3.

Explanation:

To calculate the number of atoms in 1.75 mole of CHCl3, we need to use Avogadro's number, which is 6.02 x 10^23 atoms per mole. The atomic mass of CHCl3 can be calculated by adding up the atomic masses of its constituent atoms. Carbon has an atomic mass of 12.01 g/mol, hydrogen has 1.01 g/mol, chlorine has 35.45 g/mol, and there are 3 chlorine atoms in CHCl3. So, the total atomic mass of CHCl3 is 12.01 + (1.01 x 3) + 35.45 = 119.48 g/mol. Therefore, 1.75 mole of CHCl3 contains (1.75 mol) x (6.02 x 10^23 atoms/mol) = 1.0545 x 10^24 atoms.

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Final answer:

To find the number of atoms in 1.75 moles of CHCl3, multiply 1.75 moles by Avogadro's number, then by the number of atoms per CHCl3 molecule to get approximately 5.26925 × 10^24 atoms.

Explanation:

To calculate the number of atoms in 1.75 moles of CHCl3, we'll follow a few simple steps. First, remember that 1 mole of any substance contains Avogadro's number of particles, which is 6.022 × 10^23 particles/mole. The formula CHCl3 consists of 1 atom of carbon, 1 atom of hydrogen, and 3 atoms of chlorine for a total of 5 atoms per molecule.

So, if we have 1.75 moles of CHCl3, we can multiply this by Avogadro's number to find the number of molecules:

1.75 moles × 6.022 × 102^3 molecules/mole = 1.05385 × 10^24 molecules of CHCl3

Then, we multiply the total number of molecules by the number of atoms per molecule:

1.05385 × 10^24 molecules × 5 atoms/molecule =

5.26925 × 10^24 atoms

Therefore, there are approximately 5.26925 × 10^24 atoms in 1.75 moles of CHCl3.

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The Correct answer to this question for Penn Foster Students is: 137.5 m