General Chemistry Answers

If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter? (1 L = 1.06 qt)

Balanced the following redox equations. All occur in acid solution. a) Zn (s) + NO3 - (aq) Zn2+ (aq) + N2O (g) b) Ag (s) + NO3 - (aq) Ag+ (aq) + NO2 (g)

Calculate the value of E0 for each of the following reaction: Fe2+ (aq) + Ag+ Fe3+(aq) + Ag (s)

Write the equations for oxidation, reduction and overall reaction for the following electrochemical cell: Cu(s)/Cu2+ (aq) // Fe 3+ (aq)/ Fe2+ (aq) / Pt (s)

the importance of using ammonium as an “index” ion and the concentration used

𝐾𝑎 (𝑁𝐻₄ ⁺) = 10⁻⁹ = 𝑁𝐻₃ [𝐻₃𝑂 ⁺] [𝑁𝐻₄ ⁺] = 𝑥 ∗ 𝑥 0.1 − 𝑥 ≈ 𝑥 2 0.1 ⇒ 𝑥 =

What is the hybridised state of carbon in CH4, C2H4, and C2H2, also state the shape of each of the molecules

1. A confined amount of gas at 100C has a pressure of 2.5 atm. What is its new pressure if the temperature is increased to 50oC?

Show your work in details by solving these questions 1- Calculate the number of moles in 3.42x1021 number of atoms . ( 1 pt. )

150 ml of gas are enclosed in the cylinder under a pressure of 760 torr. What would be the volume be at pressure of 1520 torr?