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igomit [66]
3 years ago
13

CHEMISTRY HELP!! can someone please tell me if these metals where oxidized from looking at the table above and also the oxidizin

g agent?

Chemistry
1 answer:
Rasek [7]3 years ago
4 0

Answer:

Was the metal oxidized?

Cu = No | No | No

Fe = Yes | No | No

Zn = Yes | Yes | No

Oxidizing Agent:

Cu = None | None | None

Fe = Cu, NO3 | None | None

Zn = Cu, NO3 | Fe, NO3 | None

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Answer:

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mols H2 = grams/molar mass

Using the coefficients in the balanced equation, convert mols H2 to mols O2.

Now convert mols O2 to grams. That's grams mols O2 x molar mass O2.

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This is the answer.

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Consider this question: What is the molarity of HCL if 35.23 mL of a solution of HCL contains 0.3366 g of HCL?
Crazy boy [7]

<u>Answer:</u> The molarity of HCl solution is 0.262 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Given mass of HCl = 0.3366 g

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Volume of the solution = 35.23 mL

Putting values in above equation, we get:

\text{Molarity of HCl}=\frac{0.3366g\times 1000}{36.5g/mol\times 35.23mL}\\\\\text{Molarity of HCl}=0.262M

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