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MatroZZZ [7]
3 years ago
14

PLz answer Compounds are made from two or more different types of ?

Chemistry
1 answer:
Musya8 [376]3 years ago
8 0

Answer:

A compound consists of two or more types of elements

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DanielleElmas [232]

Answer:  Its "C"

Explanation:

Appearance and density

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What is the maximum magnification of a compound light microscope?
igor_vitrenko [27]

Answer: 100x

Explanation:

The actual power or magnification of a compound optical microscope is the product of the powers of the ocular (eyepiece) and the objective lens. The maximum normal magnifications of the ocular and objective are 10× and 100× respectively, giving a final magnification of 1,000×.

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Explain why you think learning about the rock cycle will help us better understand the world around us.
Karolina [17]

Answer:

You can learn about common things happening to the environment that aren't good. Such as erosion, and the effects it has on the land surrounding it.

Explanation:

3 0
3 years ago
Calculate how many grams of iron can be made from 16.5 grams of iron(III) oxide if hydrogen gas is in excess?
miss Akunina [59]

Taking into account the reaction stoichiometry, 11.54 grams of Fe are formed from 16.5 grams of iron(III) oxide if hydrogen gas is in excess.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

Fe₂O₃ + 3 H₂ → 2 Fe + 3 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • Fe₂O₃: 1 mole
  • H₂: 3 moles
  • Fe: 2 moles
  • H₂O: 3 moles

The molar mass of the compounds is:

  • Fe₂O₃: 159.7 g/mole
  • H₂: 2 g/mole
  • Fe: 55.85 g/mole
  • H₂O: 18 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

  • Fe₂O₃: 1 mole ×159.7 g/mole= 159.7 grams
  • H₂: 3 moles ×2 g/mole= 6 grams
  • Fe: 2 moles ×55.85 g/mole= 111.7 grams
  • H₂O: 3 moles ×18 g/mole= 54 grams

<h3>Mass of each product formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 159.7 grams of Fe₂O₃ form 111.7 grams of Fe, 16.5 grams of Fe₂O₃ form how much mass of Fe?

mass of Fe=\frac{16.5 grams of Fe_{2} O_{3} x111.7 grams of Fe}{159.7 grams of Fe_{2} O_{3}}

<u><em>mass of Fe= 11.54 grams</em></u>

Then, 11.54 grams of Fe are formed from 16.5 grams of iron(III) oxide if hydrogen gas is in excess.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

7 0
2 years ago
What is coefficientof Ixgen in the balanced reason: _ _ C2H4 + _ _ O2 --&gt; _ _ CO2 + _ _ H2O​
laiz [17]

The coefficient for Oxygen in the balanced reaction : 3

<h3>Further explanation</h3>

Given

Reaction

C₂H₄ + _ _ O₂ ⇒ _ _ CO₂ + _ _ H₂O​

Required

Oxygen coefficient

Solution

  • 1. Give a coefficient

C₂H₄ + aO₂ ⇒ bCO₂ + cH₂O​

C, left=2, right=b⇒b=2

H, left=4, right=2c⇒2c=4⇒c=2

O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.2+2⇒2a=6⇒a=3

The equation becomes :

C₂H₄ + 3O₂ ⇒ 2CO₂ + 2H₂O

​

6 0
3 years ago
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