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sveticcg [70]
3 years ago
13

Two substances that have the same number of moles of representative particles always have: Answer the same number of atoms the s

ame masses the same weights none of the above
Chemistry
2 answers:
Nesterboy [21]3 years ago
7 0
<span>same no of atoms
b/c no. of atoms = moles * avogadro's no (6.022 X 10^23)</span>
Allushta [10]3 years ago
6 0

Answer:

the same number of atoms

Explanation:

Mole is defined as amount of substance which contains a fixed number of atoms/molecules/ions/particles and the number is known as Avagadro's number.

One mole is equal to 6.023X10²³ particles of any substance.

For example:

one mole of carbon will have 6.023X10²³ atoms of carbon and one mole of gold will have 6.023X10²³ atoms of gold

Thus the number of atoms will be the same in a given number of moles of any pure element.

Now the mass or weight could not be equal as the mass or weight will depend upon the atomic mass of element.

for example one mole of carbon will weigh 12grams

and one mole of gold will weigh 197grams

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If an atom has sp3d2 hybridization in a molecule:
never [62]

Answer:

a. the maximum number of σ bonds that the atom can form is 4

b. the maximum number of p-p bonds that the atom can form is 2

Explanation:

Hybridization is the mixing of at least two nonequivalent orbitals, in this case, we have the mixing of one <em>s, 3 p </em> and <em> 2 d </em> orbitals. In hybridization the number of hybrid orbitals generated  is equal to the number of pure atomic orbital, so we have 6 hybrid orbital.

The shape of this hybrid orbital is octahedral (look the attached image) , it has 4 orbital located in the plane and 2 orbital perpendicular to it.

This shape allows the formation of maximum 4 σ bond, because σ bonds are formed by orbitals overlapping end to end.

And maximum 2 p-p bonds, because p-p bonds are formed by sideways overlapping orbitals. The atom can form one with each one of the orbitals located perpendicular to the plane.

4 0
3 years ago
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What happens to salt water and fresh water when you try to mix them.
torisob [31]

Answer:

the lighter fresh water rises up and over the salt water

Explanation:

this is because the salt water is denser

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NH4 oxidation number
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The answer is +1! Have a great day!
6 0
3 years ago
The reaction takes place in water. What happens to the equilibrium when the pressure is increased?
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<span>As you have given us no information on what reaction and what equilibrium you refer to, this is impossible to answer!</span>
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The number of hydrogen atoms in 0.050 mol of c3h8o3 is
Natalka [10]

Answer:

            2.40 × 10²³ Atoms of Hydrogen

Solution:

The number of hydrogen atoms in C₃H₈O₃ are calculated as;

As, there are eight hydrogen atoms per molecule of C₃H₈O₃, therefore the number of hydrogen atoms per mole of C₃H₈O₃ are calculated as;

            1 mole C₃H₈O₃ contains  =  6.022 × 10²³ Molecules of C₃H₈O₃

So,

       0.05 mole C₃H₈O₃ will contain  =  X Molecules of C₃H₈O₃

Solving for X,

                     X  =  (0.05 × 6.022 × 10²³) ÷ 1

                     X =  3.011 × 10²² Molecules of C₃H₈O₃

As,

            1 Molecule of C₃H₈O₃ contains  =  8 Atoms of Hydrogen

So,

3.011 × 10²² Molecules of C₃H₈O₃ will contain  =  X Atoms of Hydrogen

Solving for X,

                     X =  (3.011 × 10²² × 8) ÷ 1

                     X  =  2.40 × 10²³ Atoms of Hydrogen


6 0
3 years ago
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