Question

Chemistry Class 11.
Q1. How many atoms will be there in
a) 3 moles of Fe
b) 3 moles of O2
c) 3 moles of SO2
Q2. Define law of multiple proportions and explain with an example.
Q3. An organic compound has the following percent composition C=48%,H=8%, N=28%.Calculate the empirical formula of the compound.
Q4. Calculate molality,molarity and mole fraction of KI (potassium iodide), if density of 20% aqueous KI solution is 1.202 gm/L.
Q5. One liter of sea water weighs 1050 grams and contain 6x10^-3 gram of dissolved oxygen gas. Calculate the concentration of the dissolved oxygen in parts per million.

Answer 1

Answer:

sorry I didn't know the answer

Answer 2

Answer:

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