1 year ago

1. How many grams of Co2+ are present in 3.76 grams of cobalt(II) acetate?

Chemistry

1 answer:

Vesnalui [34]1 year ago

6 0

Answer: 3.76

Explanation:

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How many nickel atoms are in a nickel coin with a mass of 3.95g

lyudmila [28]

Answer:

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Explanation:

Step 1: Given data

Mass of nickel: 3.95 g

Step 2: Calculate the moles corresponding to 3.95 g of nickel

The molar mass of nickel is 58.69 g/mol.

3.95 g × (1 mol/58.69 g) = 0.0673 mol

Step 3: Calculate the atoms in 0.0673 moles of nickel

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2 years ago

A 40.0-mL sample of 0.100 M HNO2 (Ka = 4.6 x 10-4 .) is titrated with 0.200 M KOH. Calculate: a. the pH when no base is added b.

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Answer:

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Explanation:

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2 years ago