what is the normality of a solution of ammonia having specific gravity 0.9 and 28.33%

1- 10 N

2- 5 N

3- 15 N

4- 1N

Q2

please show your work solution !

g) Calculate the number of kg of Cu in 3.71103kg of chalcopyrite (CuFeS2)? i. 1.28103kg ii. 34.6103kg iii. 3.46103kg iv. 128.4103kg h) Based on the solubility rules, which one of these compounds should be soluble water? v. Na2CO3 vi. Ag2CO3 vii. AgBr viii. BaCO3 i) Predict the direction in which the equilibrium will lie for the reaction: H2CO3+FHCO3++HF(Kaa(H2CO3)=4.2107;Kaa(HF)=7.1104) i. to the right ii. to the left iii. at equilibrium iv. no change j) Methanol burns in air if 209g of methanol are used up in the combustion, accon the following equation what mass of water is produced? [molecular weights : (CH3OH=32.0g),(H2O=18.0g) ] i. 58.78gH2CH3OH+3O22CO2+4H2O ii. 235gH2O iii. 18.01gH2O iv. 117gHH2O