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Viktor [21]
3 years ago
11

Insert numbers next to these steps to show the correct order of events for a fuel cell to work. (1 - first step, 5 – last step).

At the anode, the Hy loses electrons and becomes H+. At the cathode, H+ ions combine with electrons and O2 to produce H20. Electrons (e) flow through the wire to produce electricity. Fuel (H) is pumped into the cell. H+ flows through the electrolyte to the cathode.​
Chemistry
1 answer:
alexgriva [62]3 years ago
5 0

Answer:

2

5

4

1

3

Explanation:

got it right on edge :))))

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timurjin [86]
It’s the second one if you need more help tell me
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3 years ago
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In photosynthesis, the reactants are more stable than the products. However, both the products and reactants are stable. Therefo
My name is Ann [436]

Answer:

A.) Absorb and store

Explanation:

The reaction for photosynthesis is:

6CO_{2}+ 12H_{2}  O → C_{6} H_{12} O_{6}  +6H_{2} O  (reaction conditions: light and chlorophyll)

<em>carbon dioxide + water → glucose + water</em>

<em />

This means light energy is <u>absorbed</u> and <u>stored</u> as sugar molecules and energy for the plant

Therefore, the photosynthesis reaction will <u>  absorb  </u> energy and <u>  store  </u> it in the chemical bonds.

3 0
4 years ago
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How many milliliters of a 1.5 m h2so4 are needed to neutralize 35ml sample of a 1.5 m solution?
DochEvi [55]

Answer:

1) 17.5 mL

Explanation:

Hello,

In this case, the reaction between sulfuric acid and potassium hydroxide is:

H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O

In such a way, we notice a 1:2 molar ratio between the acid and the base, therefore, at the equivalence point we have:

2*n_{acid}=n_{base}

And in terms of concentrations and volumes:

2*M_{acid}V_{acid}=M_{base}V_{base}

Thus, we solve for the volume of acid:

V_{acid}=\frac{M_{base}V_{base}}{2*M_{acid}} =\frac{35mL*1.5M}{2*1.5M} \\\\V_{acid}=17.5mL

Best regards.

5 0
3 years ago
A student carried out a simple distillation on a compound known to boil at 124 oc and they reported a boiling point of 116-117 o
chubhunter [2.5K]

Answer :

The correct answer is due to incorrect position of thermometer .

Distillation  is process of separating two volatile liquids on the basis of their boiling points .In involves the following set up ( shown in image )

Since the Boiling point is found   is 116-117 C which is near to 124 C , also the purity was checked and thermometer was calibrated .

So the only error could be possible is position of thermometer .

The position of  bulb of thermometer is very important to get an accurate reading of boiling point .The vapor so formed should touch the side walls of bulb as soon as they are formed .

May be  the bulb of thermometer was   kept far from the vapors formed by liquid so,  s<u>ome of  the vapor before reaching to  bulb start condensing and their Temperature decreases </u>.  

Hence , the  temperature shown by thermometer was decrease than actual boiling point  due to incorrect position of thermometer.


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3 years ago
How should you change this image to represent an ionic bond between sodium and fluorine?
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