Related FAQs

• Why we should study chemistry instead of bio technology?
• When naming tertiary or quartenry compounds e.g HNO3 [trioxonitrate (v)], H2SO4 [tetra Oxo Sulphate (iv) acid]rnwhy's hydrogen not included in it's name.rne.g HNO3 not named Hydrogen TriOxoNitrate (v) acid and H2SO4 not Hydrogen tetra Oxo Sulphate (iv) acid
• The thermochemical equations for the formation of iron (ii) oxide and iron (iii) oxide are given below: (1) 2 fe (s) + O2(g) → 2 FeO (s) Δh= -63.7 kcal (2) 4 fe (s) + 3o2(g) → 2fe2o3 (s) Δh= -393.0 kcal From these data, Calculate the heat of reaction Δh for the change: 4 FeO(s) + O2(g) → 2fe2o3 (s)
• The thermochemical equations for the formation of iron (ii) oxide and iron (iii) oxide are given below:rn (1) 2 fe (s) + O2(g) → 2 FeO (s) Δh= -63.7 kcal rn(2) 4 fe (s) + 3o2(g) → 2fe2o3 (s) Δh= -393.0 kcal rnfrom these data, Calculate the heat of reaction Δh for the change:rn 4 FeO(s) + O2(g) → 2fe2o3 (s)
• Nitric acid, HNO3, is produced by a process that allows nitrogen dioxide to react with water.rn3 NO2 + H2O --> 2hno3 + NOrnHow many grams of water, H2O are needed to produce 12.0 g of nitric acid, HNO3?
• Nitric acid, HNO3, is produced by a process that allows nitrogen dioxide to react with water.rn3 NO2 + H2O --> 2hno3 + NOrnHow many grams of water, H2O are needed to produce 12.0 g of nitric acid, HNO3?
• Nitric acid, HNO3, is produced by a process that allows nitrogen dioxide to react with water.rn3 NO2 + H2O --> 2hno3 + NOrnHow many grams of water, H2O are needed to produce 12.0 g of nitric acid, HNO3?
• Nitric acid, HNO3, is produced by a process that allows nitrogen dioxide to react with water.rn3 NO2 + H2O --> 2hno3 + NOrnHow many moles of nitrogen dioxide, NO2 react with 3.56 g of H2O ?
• For nitrous acid (hno2), the value of ka is 4.5 x 10-4. rn a buffer solution was prepared by dissolving 0.085 moles ofrn nitrous acid and 0.100 moles of potassium nitrite (kno2) rn in enough water to make 1.00 liter of solution. rn What is the ph of this buffer solution?rn Henderson-Hasselbalch Equation: ph = pka + log ( [a-1] / [ha] )
• Which of the following substances is an Arrhenius acid?rnnh3rnhno3rnh2ornnacl