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If you start with 25.0 grams of lead (II) nitrate and 15.0 grams of sodium iodide, how many grams of sodium nitrate can be formed?
A drinking water treatment plant adds fluorine at a concentration of 1 mg/L. The average daily water demand is 68 million liters. How much chlorine must the community purchase?
what volume of 3mol h2so4 is required to react with 10g of zinc
Calculate the cell potential of Voltaic cell. Cr3+ + 3e - Cr E0 = -0.74 V Fe3+ + e - Fe2+ E0 = +0.77 V Cr + 3Fe3+ - 3Fe2+
. Select the warmer temperature in each pair (Show the conversions):
a) 10°C or 10°F b) 30°C or 15°F c) -10°C or 32°F d) 200°C or 200°K
A student working in lab is reacting calcium oxide with water by dropping lumps of calcium oxide into the distilled water.
CaO (s) + H2O (ℓ) → Ca(OH)2 (aq)
Which actions or changes can the student make to increase the number of effective collisions between CaO and H2O?
What is a first order reaction? Give two examples.
Derive equation use to calculate depression in freezing point?
A Buffer solution can be made by mixing CH3COOH and CH3COONa.
i) Write down equation for dissolution of both these substance in water.
ii) What will happen if we add small amount of HCl in to it.
Justify that CaO is basic oxide whereas Al2O3 is an amphoteric oxide.
