1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natasha_Volkova [10]
3 years ago
13

Who believed that atoms of a given element are identical

Chemistry
1 answer:
deff fn [24]3 years ago
6 0

Answer:

Dalton

Explanation:

You might be interested in
Please help me this is my fourth attempt.
Vaselesa [24]

Explanation:

CH4 + 4S ---> CS2 + 2H2S

4) 0.75 mol S × (1 mol CS2/4 mol S) = 0.19 mol CS2

5) 3 mol H2S × (1 mol CH4/2 mol H2S) = 1.5 mol CH4

Fe2O3 + 2Al ---> 2Fe + Al2O3

6) 25 g FeO3 × (1 mol Fe2O3/159.69 g Fe2O3) = 0.16 mol Fe2O3

0.16 mol Fe2O3 × (2 mol Al/1 mol Fe2O3) = 0.32 mol Al

0.32 mol Al × (26.98 g Al/1 mol Al) = 8.6 g Al

7) Given:

45 g Al × (1 mol Al/26.98 g Al) = 1.6 mol Al

85 g Fe2O3 ×(1 mol Fe2O3/159.69 g Fe2O3)

= 0.53 mol Fe2O3

Let's look at how much Fe each reactant will produce:

1.6 mol Al × (2 mol Fe/2 mol Al) = 1.6 mol Fe

0.53 mol Fe2O3 × (2 mol Fe/1 mol Fe2O3) = 1.1 mol Fe

Note that the given amount of Fe2O3 will give us fewer Fe. Therefore, Fe2O3 is the limiting reactant.

8) Al will produce 1.6 mol Fe × (55.845 g Fe/1 mol Fe)

= 89 g Fe

Fe2O3 will produce 1.1 mol Fe × (55.845 Fr/1 mol Fe)

= 61 g Fe

9) Since Fe2O3 is the limiting reactant, the ideal yield of Fe for the reaction is 61 g. If the actual reaction only gave us 25 g Fe. then the percent yield of Fe is

%yield = (25 g Fe/61 g Fe) × 100% = 41%

10) If we only got 25 g Fe, then the amount of Al actually used in the reaction is

25 g Fe × (1 mol Fe/55.845 g Fe) = 0.45 mol Fe

0.45 mol Fe × (2 mol Al/2 mol Fe) = 0.45 mol Al

0.45 mol Al × (26.98 g Al/1 mol Al) = 12 g

Therefore, the leftover amount of Al is

25 g Al - 12 g Al = 13 g Al

8 0
2 years ago
Which best describes a chemical reaction that follows the law of conservation of matter?
Leno4ka [110]
I’m thinking C for this hope it’s right
5 0
3 years ago
1. You may "feel" cold when you touch certain kinds of matter because​
Vinil7 [7]
You may feel cold when you touch certain kinds of matter because some matter gives off cold air. I’m NOT SURE
8 0
3 years ago
Which electrons are lost by an atom of iron when it forms the Fe3+ ion?
astra-53 [7]
The two s Orbital electrons and one d orbital electron, are the electrons that are lost by an atom of Iron when it forms the Fe3 + ion. 
8 0
3 years ago
Read 2 more answers
Explain how, the removal of thermal energy (heat) from matter affects its particles.
WINSTONCH [101]

Answer:

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

4 0
2 years ago
Read 2 more answers
Other questions:
  • How Did Lavoisier's wife help him to communicate the results of his experiments
    11·1 answer
  • ILL MARK YOU AS BRAINLIEST, RATE YOU A 5, AND THANK YOU! 30 PTS!
    6·2 answers
  • Which statement best compares potential and kinetic energy?
    12·2 answers
  • Is the work correct?
    15·1 answer
  • Element A has an electronegativity of 2.20. Element B has an electronegativity of 3.44. The bond of molecule AB is then best des
    11·2 answers
  • If 9.2 femptosections is equal to 9.2 ×10^-15 seconds what is the exponential equivalent of fempto?
    6·1 answer
  • What do you think would happen if a solid were exposed to extremely cold temperatures, or if a gas were exposed to extremely hot
    10·1 answer
  • The atomic number of Magnesium is 12. Which of the following answers is true? (Choose all that apply)
    15·1 answer
  • What is a factor of a solution​
    15·1 answer
  • Which of the following happens during an endothermic chemical change?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!