- Lim x->1 (x^4+3x^2-2)^5-32/x-1 ?? lim h->0 cot(60+h)-cot60 / h?? can anyone help me, thankyou..?

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If input impedance of an amp is 20 kOhm, what is the recommended impedance of the input line? A patient recieves 9.0 ng of a radioisotope with a half-live of 12 hours. How much will remain in the body (in ng) after 2.0 days? Where in world do u see green and red sky? If 14.9g of O gas & 9.43g of N gas are placed in a 4.27 L flask at 25.0°C. What is the total press of the gas mixture (in atm) in the flask? How many electrons are transferred in the following, unbalanced, redox reaction?
Cl2(aq) + Kl(aq) => KCl(aq) + l2(aq)?