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Kay [80]
3 years ago
14

When components do not combine chemically, it is a _____. compound substance mixture molecule

Chemistry
2 answers:
Inessa05 [86]3 years ago
6 0
Mixture does not combine chemically
Lelu [443]3 years ago
6 0

Answer: Option (c) is the correct answer.

When an atom donates or shares its valence electrons with other atoms then it results in the formation of a new atom. This means a chemical has occurred as the chemical composition of products will be different from the reactants.

Whereas a substance is a matter which contains specific composition with some specific properties.

When two or more substance are mixed together then it is known as a mixture. It is not necessary that substances added will combine with each other.

When atoms of similar element chemically combine together then they result in the formation of a molecule.

For example, Cl + Cl \rightarrow Cl_{2}

Therefore, we can conclude that when components do not combine chemically, it is a mixture.

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The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to produc
docker41 [41]

Answer:

The  theoretical yield of NH3 produced by the reaction is 16.89 grams

Explanation:

Step 1: Data given

Mass of N2 = 13.90 grams

Molar mass of N2 = 28.0 g/mol

Mass H2 = 6.440 grams

Molar mass H2 = 2.02 g/mol

Step 2: The balanced equation

N2(g) + 3 H2(g) → 2 NH3(g)

Step 3: Calculate moles

Moles = mass / molar mass

Moles N2 = 13.90 grams / 28.0 g/mol

Moles N2 = 0.496 moles

Moles = 6.440 grams / 2.02 g/mol

Moles H2 = 3.19 moles

Step 4: Calculate limiting reactant

For 1 mol N2 we need 3 moles H2 to produce 2 moles NH3

N2 is the limiting reactant. It will completely be consumed (0.496 moles)

H2 is in excess. There will react 3*0.496 = 1.488 moles

there will remain 3.19 - 1.488 = 1.702 moles

Step 5: Calculate moles NH3

For 1 mol N2 we need 3 moles H2 to produce 2 moles NH3

For 0.496 moles N2 we will have 2*0.496 = 0.992 moles NH3

Step 6: Calculate mass NH3

Mass NH3 = moles NH3 * molar mass NH3

Mass NH3 = 0.992 moles * 17.03 g/mol

Mass NH3 = 16.89 grams

The  theoretical yield of NH3 produced by the reaction is 16.89 grams

4 0
3 years ago
Fe2O3 + H2 --> Fe + H2O
sveticcg [70]
A) 10.0g of Iron is \frac{10.0}{55.8}=179mmol of Iron.

One mole of dihydrogen is required to form one mole of iron, hence you'll need 0.179*1.00=0.179g of dihydrogen.

B) Likewise : 2.50g of Iron is \frac{2.50}{55.8}=44.8mmol of Iron, hence we'll need 44.8*(3*16+2*55.8)=7.15g of Fe2O3.
4 0
4 years ago
Why we are advice to use fossil fuel only when absolutely necessary?​
trasher [3.6K]

Answer:

Hello there! For some reason Brainly detects my answers as containing swear words in them when they do not. Hence, the answer is going to be in the comments. Enjoy!

Explanation:

Hope this helped!

4 0
3 years ago
What is the pH of a solution with a [H+] of 1.0 x 10-4 M?
MaRussiya [10]
PH = -log [H+]
pH = -log (1.0x10^-4) = -(-4) = 4 or A
4 0
3 years ago
Which of the following is not an example of a molecule A. O₃     B. F      C. H₂O₂        D. NCI₃
exis [7]

The correct option is B. F

Hope this helps

-AaronWiseIsBae

4 0
4 years ago
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