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3 years ago

8

Ao25% of 80 =please help me asap this is math btw not chem

2 answers:

Musya8 [376]3 years ago

7 0

Answer:

20

explain

80×.25 = 20

25%=.25

mestny [16]3 years ago

3 0

Answer:

55

Explanation:

if you sub and I am writing it simple

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The question is below!

Agata [3.3K]

The anode is the negative electrode and so will be donating electrons to assist in this chemical reaction occuring. All reactions accept electrons as reactants. The key issue is the reduction potential Eo (+1.8V). This is greatest for the reaction:

Co3+ + e -> Co2+

Therefore this reaction has the greatest tendency to occur.

6 0

3 years ago

suter [353]

Answer: The possible molecular formula will be $CO_2$

Explanation:

Mass of C= 27.3 g

Mass of O = 72.7 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{27.3g}{12g/mole}=2.275moles$

Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{72.7g}{16g/mole}=4.544moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{2.275}{2.275}=1$

For O = $\frac{4.544}{2.275}=2$

The ratio of C : O = 1: 2

Hence the empirical formula is $CO_2$

The possible molecular formula will be= $n\times CO_2$

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nata0808 [166]

Answer:

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Alenkasestr [34]

Answer:

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Explanation:

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