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Tatiana [17]
3 years ago
5

ANSWER ASAP PLeAsE ?????????????

Chemistry
2 answers:
ladessa [460]3 years ago
6 0

Answer:

The answer is A.) leaving a copper penny in vinegar until it turns green.

All the other options are physical changes, as you can separate the two mixtures.

I hope this helps you! :)

Alexus [3.1K]3 years ago
3 0

Explanation:

In my opinion last point will be correct answer

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I need this answer quick please show work
Ainat [17]

Answer:

The answer to your question is 25.2 g of acetic acid.

Explanation:

Data

[Acetic acid] = 0.839 M

Volume = 0.5 L

Molecular weight = 60.05 g/mol

Process

1.- Calculate the number of moles of acetic acid

    Molarity = moles / volume

-Solve for moles

    moles = Molarity x volume

-Substitution

    moles = (0.839)(0.5)

-Result

    moles = 0.4195

2.- Calculate the mass of acetic acid using proportions and cross multiplications

                   60.05 g ----------------------- 1 mol

                        x        ----------------------- 0.4195 moles

                        x = (0.4195 x 60.05) / 1

                        x = 25.19 g

3.- Conclusion

25.2 g are needed to prepare 0.500 L of Acetic acid 0.839M

               

4 0
3 years ago
Which of the following statements is a true statement regarding a solution with [H1+] =1x10-5 M and [OH1-]= 1x10-9 M?
zheka24 [161]

Answer:

B. The [H1+] >[OH1-] and the solution is acidic

4 0
3 years ago
The figure shows a nutrition label. How much energy does this food contain?
RoseWind [281]

Answer:

i need help with that too.

Explanation:

3 0
3 years ago
The number 0.00003007 expressed in exponential notation is
antiseptic1488 [7]
The exponential is 3.007 times 10 to the -5
5 0
3 years ago
HELPPPP PLEASEE!!!!!!!
OlgaM077 [116]

I think the answer is yes

3 0
3 years ago
Read 2 more answers
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