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Pavel [41]
3 years ago
14

Define:

Chemistry
2 answers:
Scrat [10]3 years ago
6 0

Answer:

Atom is a the smallest particle of a chemical element that can exist.

Molecules is a a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Particles is a minute portion of matter.

A particle can be a single atom or a molecule ( a group of atoms held together by chemical bonds).

Gekata [30.6K]3 years ago
6 0

Answer:

Atoms: a unit of the chemical element

Molecules: a group of atoms bonded together

Particles: tiny bits of matter

Yes, a particle can be a single atom.

Yes, because there's no restriction on how big or small in size particles are.

Explanation:

Atoms are in your body and even in the air you breath and molecules are with the atoms.

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Explanation:

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2 years ago
Using the following balanced chemical equation 8 H2 + S8à 8 H2S. Determine the mass of the product (molar mass = 34.08g/mol) if
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Answer: 7.29 g of H_2S will be produced from the given masses of both reactants.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

{\text{Moles of} H_2}=\frac{1.35g}{2.01g/mol}=0.672moles

\text{Moles of} S_8=\frac{6.86g}{256.5g/mol}=0.0267moles

8H_2+S_8\rightarrow 8H_2S

According to stoichiometry :

1 mole of S_8 require = 8 moles of H_2

Thus 0.0267 moles of S_8 will require=\frac{8}{1}\times 0.0267=0.214moles  of H_2

Thus S_8 is the limiting reagent as it limits the formation of product and H_2 is the excess reagent.

As 1 mole of S_8 give = 8 moles of H_2S

Thus 0.0267 moles of S_8 give =\frac{8}{1}\times 0.0267=0.214moles  of H_2S

Mass of H_2S=moles\times {\text {Molar mass}}=0.214moles\times 34.08g/mol=7.29g

Thus 7.29 g of H_2S will be produced from the given masses of both reactants.

5 0
4 years ago
How many significant figures does 0.0006510 of have?
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7 0
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WILL MARK AS BRAINLIEST IF CORRECT
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B because if it's adding more atoms but becoming more compact then it is getting smaller.

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