TS EAMCET · Chemistry · Some Basic Concepts of Chemistry
How many grams of \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2\) is needed to get 1 gram of copper? \((\) Atomic mass, \(\mathrm{Cu}=63.5, \mathrm{~N}=14, \mathrm{O}=16\) )
- A \(1.00\)
- B \(2.00\)
- C \(1.95\)
- D \(2.95\)
Answer & Solution
Correct Answer
(D) \(2.95\)
Step-by-step Solution
Detailed explanation
In \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2\) \(\begin{gathered}\text { Given, atomic mass of } \mathrm{Cu}=63.5 \times \frac{1}{5}=63.5 \\ \mathrm{~N}=14 \times 2=28 \\ \mathrm{O}=16 \times 6=96 \\ \text { Total mass }=63.5+28+96=187.5 \mathrm{~g}\end{gathered}\)…
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