its aie, smea gel ls 1 vapor readily adsorbs onto the surface of silica gel, so
ID: 563032 • Letter: I
Question
its aie, smea gel ls 1 vapor readily adsorbs onto the surface of silica gel, so it acts as a desiccant. Des mechanistic details of the adsorption of water onto silica gel, from the information provided, you should able to make an educated guess about the thermodynamic characteristics of the process. Predict the signs of G, H, and AS for this process. be G : 11: AS: 15. Radioactive isotopes decay according to a first order rate law. Carbon-10 has a half-life of 19.3 s. How long will it take 30.0 g C-10 to decay to 21.0 g?Explanation / Answer
15) we know,
half life = 0.693 / K
19.3 = 0.693 / K
K = 0.0359 sec-1.
rate constant is 0.0359 sec-1.
ln ( I0 / I) = K * t
ln (30.0 / 21.0) = 0.0359 * t
t = 9.9 sec.
9.9 sec time will taken.
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