General Chemistry Answers

10.0 g sample of an unknown compound is dissolved in 250 grams of benzene. The boiling point is raised 3.67*C above the boiling point of pre benzene. What is the molar mass of the sample?

ASAP!!!!

Find the pH of the acid before any NaOH is added show all work and the ICE TABLE

pH of the acid before any NaOH is added

according to the balanced equation below how many grams of cs2 would be produced if 42.7 grams of sg completely reacted 2ch4 + s8 → 2cs2 + 4h2s

"GALVANIC CELL"

Analyze each cell reaction. Identify and write the half-reaction that occurs in the anode and in the cathode. Calculate the standard cell potential and describe the reaction whether it is spontaneous or nonspontaneous.

1. Li (s) + F2 (g) = Li+ (aq) + 2F- (aq)

2. Au3+ (aq) + Co (s) = Au (s) + Co2+ (aq)

3. 2 Al (s) + 3 i2 = 2 Al+3 (aq) + 6 i-1 (aq)

4. F2 (g) + 2Cl-1 (aq) = 2F-1 (aq) + Cl2 (g)

what is the % c in aspirin by mass in aspirin?

what is a good fuel?

1.  An 600.0-mg sample of chromium ore was dissolved and the chromium oxidized to chromate ion. The solution was treated with 15.00 mL of 0.1750 M AgNO3. The resulting precipitate of AgCr2O4 was removed and discarded. The excess AgNO3 required 12.50 mL of 0.1240 M KSCN for titration. The pertinent ionic reactions are:

Cr2O42-+ 2Ag+→ Ag2CrO4(s)

Ag++ SCN-→ AgSCN (s)

 Calculate the % Cr2O3 in the ore.

What mass of BaCl₂ is needed to dissolve in 1.2kg water to prepare 0.500m of BaCl₂ solution?

1. For the following molten compounds   state which ions are attracted to which electrode and  write anode and cathode half equations for each compound 

(a) Aluminium Oxide , Al₂O₃ (l)     (b)  lead(II) bromide, PbBr₂(l)       (c) Lithium chloride, LiCl(l)

 If 1.14 mol of CO₂ was formed by the combustion of C₃H₈, how many moles of H₂O were also formed?

C₃H₈(g) + 5O₂(g) → 3CO₂ + 4H₂O