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a_sh-v [17]
3 years ago
6

What are the two types of pure substances? Give definitions for each.

Chemistry
2 answers:
KengaRu [80]3 years ago
6 0
Substance that is not mixed with anything is considered pure.
BabaBlast [244]3 years ago
3 0
Water and dimond are the 2 pure substances
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How many grams of iron (3)sulfide are produced when 131 grams of iron react with excess sulfur?
Tomtit [17]

<u>We want the molar mass (gfm) of Fe and FeS.</u>

Fe = 55.8 g/mol and FeS = 87.8 g/mol (55.8 +32.0).

<u>Explanation:</u>  

We want  ratio between Fe:FeS 8:8. This comes from the coefficients of the equal chemical equation.

Now we set up conversion factors following the roadmap from above.

Unit we want in the numerator, unit to cancel in the denominator.

Multiply the numerators, and divide the denominators.

(131.0)gFe \times 1molFe/(55.8)gFe \times 8molFeS/8molFe \times 87.8gFes/1molFes

243.82 g \ of Fe_2S_3

The outcome is 243.82 g of ferrous sulphite

By the above given formula we can find any amount of Fes produced by any amount of  ferrous react with sulphite.

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3 years ago
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Sometimes you are given a measured amount of two or more reactants and asked how much product can be formed. Explain what steps
Westkost [7]

Explanation:

To solve this problem, follow these steps;

  • Obtain a balanced equation of the reaction and familiarize with the reactants and products.
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learn more:

Number of moles brainly.com/question/13064292

#learnwithBrainly

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Why are the bacterial endospores placed on the paper strip and not directly in the fermentation broth?
Artyom0805 [142]
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