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3241004551 [841]
3 years ago
8

I need help with this

Chemistry
1 answer:
mars1129 [50]3 years ago
5 0

Answer would be 3.

Equation when balanced =

2Fe + 6HCl - 2FeCl3 + 3H2

you must have the same amount of each element on both sides for it to be balanced.

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Si escuchas a alguien decir que la corriente eléctrica en un sircuito sale por el polo negativo de la pila y entra por el polo p
Mrac [35]

Answer:

It refers to the conventional sense of the elastic current

Explanation:

It is the traditional or the conventional sense of the elastic current as in the earlier days the experimenters and the scientist thought that the current moves out of the positive terminal or pole of the battery and enters through the negative pole or terminal of the battery.

It is because of the direction of the current flow as thought in early days, the sentence refers to the conventional sense.

8 0
3 years ago
In the bromination reaction of ​trans​-cinnamic acid, a student started with 300 mg oftrans​-cinnamic acid and excess bromine. T
jonny [76]

Answer:

The percentage yield is= 80%

Explanation:

% yield= actual yield/theoretical yield ×100

From The question

Actual yield= 240mg

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%yield= 240/300×100= 80%

3 0
3 years ago
50 POINTS.
Vladimir79 [104]

#1. The correct answer is A.

#2. The correct answer is

      -A.  Minimum Viable Population (MVP)

      -B.  Increase.

      -C. Death rate decreases.

#3. The correct answer is B.

#4. The correct answer is B.

#5. The correct answer is:

-A. Decrease.

-B. Decrease.

-C. Increase.

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Hope this helps ya!! (:

7 0
4 years ago
Read 2 more answers
PLEASE HURRY I'M TIMED Where does the flow of energy begin in every ecosystem?
wlad13 [49]
The sun ...................
6 0
3 years ago
What did you observe in the reaction of phosphoric acid with the freshly cleaned zinc when compared with a piece just taken out
mash [69]

Answer:

The classification is mentioned below for the particular topic.

Explanation:

  • Whether we position 2 different beakers in such a single beaker through one clean edge of zinc-containing H₃Po₄ and another one with unflushed zinc.  
  • The zinc that was washed set to release hydrogen gas way quicker, unlike unventilated zinc.  

⇒      3Zn+2H_{3}Po_{4}\rightarrow Zn_{3}(Po_{4})_{2}+3H_{2}

  • Since fresh zinc complicates the cycle since, as a comparison to polluted zinc, there was little contact with either the reaction.
6 0
3 years ago
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