Ethane, C 2 H 6 , forms CH 3 radicals at 700 C in a first order reaction, for which k r 1 98 h 1 (a) What is the half life for the reaction (b) Calculate the time needed for the amount of ethane to fall from 2 26 10 3 mol to 1 45 10 4 mol in a reaction vessel of volume 500 mL at 700 C (c) How much of a sample of ethane with mass of 5 44 mg placed in a reaction vessel of 500 mL volume at 700 C will remain after 42 min

Question: Ethane, C 2 H 6 , forms CH 3 radicals at 700. C in a first-order reaction, for which k r = 1.98 h 1

Ethane, C₂H₆, forms ·CH₃ radicals at 700. °C in a first-order reaction, for which k_r = 1.98 h^–1.

(a) What is the half-life for the reaction?

(b) Calculate the time needed for the amount of ethane to fall from 2.26 * 10^–³ mol to 1.45 * 10^–4 mol in a reaction vessel of volume 500. mL at 700. °C.

(c) How much of a sample of ethane with mass of 5.44 mg placed in a reaction vessel of 500. mL volume at 700. °C will remain after 42 min?

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