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8.4g of mixture of pottasium hydroxide and potassium chloride were made upto 1 litre of aqueous solution. 20cm3 of this solution required 24.2 cm3 of 0.1 mole of nitric acid for neutralization. calculate the percentage by mass of potassium chloride in the mixture
Calculate ∆H for:- CaO(s)+SO3(g) gives CaSO4(s) (∆H=?) From the following given data (1)H2(g)+1/2 O2(g) gives H2O(1) (∆H = -285.8 Kj) (2) SO3(g)+H2O(1) gives H2SO4(1) (∆H = -132.5 Kj) (3) H2SO4(1) + Ca(s) gives CaSO4(s) + H2(g) (∆H= -602.5 Kj) (4) Ca(s) + 1/2 O2(g) gives CaO(s) (∆H=-634.9 Kj)
A sample of hydrogen exerts a pressure of 0.389 ATM and has a volume of 7.0L the pressure increases to 3.35 ATM at constant temperature what will its new volume be
I don't know if this is a Ideal Gas Law or Real Gas Law question. My question is; if my goal is to drop air temperature by pressure drop, from 300K to 96K. I can generate pressure (P1) from 1 atm up to 408 atm. Volume (V1) = 57L (V2) = 1700L. If I want to accomplish this in one pressure drop without recompressing the cold air what is the most efficient method?





In an experiment 0.197 g of gold metal reacts to yield 0.303g of gold (III) chloride. Using the conservation of mass law, predict the mass of reacting chlorine gas
Au(s)+Cl2(g)=2AuCl3(s)
how old is a bone if it presently contains 0.3125g of C-14, but it was estimated to have originally contained 80.0g of C-14 (C-14 Half-life=5730 years)
What is the coefficient of hydrogen gas after balancing the following equation _N2(g)+_H2(g)=_NH3
Why is water an amphoteric molecule
What is hybridization? Discuss sp2 hybridization in carbon.
State the relevant laws which are applicable on the following observation of gas: (1) Both C3H8 and CO2 have equal rate of diffusion.(2)1 dm3 O2 and 1 dm3 H2 contains same number of moles at STP.