What will be the mass of one \(^{12}C\) atom in g?

Question

80 mL of a hydrocarbon on mixing with 264 mL of oxygen in a closed U-tube undergoes complete combustion. The residual gases after cooling to 273 K occupy 224 mL. When the system is treated with KOH solution, the volume decreases to 64 mL. The formula of the hydrocarbon is:

Answer 1

Given:

Mass of ¹²C atom = 12 u
1 atomic mass unit (u) = 1.66 × 10⁻²⁴ g

Calculation:

Mass of one ¹²C atom

= 12 × 1.66 × 10⁻²⁴ g

= 1.992 × 10⁻²³ g

Final Answer:

Mass of one ¹²C atom = 1.99 × 10⁻²³ g

What will be the mass of one \(^{12}C\) atom in g?

Solution and Explanation

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