Chemistry Answers

P, Q and R is An intermediate in the production of commodities such as herbicides, dyestuffs and rubber(C7H7Cl)

a) what is molecular structure of C7H7Cl

b)Regardless of compound P, Q and R; which pair of the molecules are isomeric and give a reason.

c)Give the possibility of structure P, Q and R with a correct nomenclature.

How many grams of Cu would have to react to produce 89.5 grams of Ag

How many moles of O₂ are needed to react with 2.83 moles 

1) What is the molarity of 1.28 mol of CA(NO3)2 dissolved in 1.50 L of solution?

2) How many moles are contained in 0.210M KOH?

How many joules are released when 2.4 g H₂O at 0.0^oC solidify? (Specific Heat = 4.2 J/g^oC, Enthalpy of fusion = 6010 J/mol, Enthalpy of vaporization = 40700 J/mol)

how did you got 25?

For #1-3, consider the reaction:

3 NaOH(aq) + 3 FeCl3 → NaCl (aq) + 3 Fe(OH)3 (s)

1) What mass of Fe(OH)3 would be produced if 250 mL of 0.250 M NaOH were added to a solution containing excess FeCl3?

2) What volume of 2M NaOH will react with 34.0 g of FeCl3?

3) What is the concentration of 20.50 mL of NaOH if this was neutralized with 20.0 mL of 0.150 M HCl in the reaction

NaOH + HCl → NaCl + HOH

 Draw the possible constitutional isomers of C3H6O. Circle and name the functional groups which are present. 

a) Describe in detail the concept of conjugate acid-base pairs using the equation below to illustrate your answer. [4 marks] H3PO4 + NaOH→ NaH2PO4 + H2O (b) To ascertain the purity of an active ingredient X, an aqueous solution of X needs to be titrated against 0.50 M HCl. What should be the pH of an aqueous solution of 0.50 M HCl? [3 marks]

calculate the theoretical yield of alf3 obtained from 0.45 moles of al in the reaction

The reaction between solid white phosphorus and oxygen produces solid tetraphosphorusdeoxide (P+O2-