Chemistry Answers

What mass of oxygen will react with 7.75g of P4?

What mass of Al(OH)3 is produced if 22.7g of NaOH is consumed?

1. Draw the shell model for Be2+.

1. How many protons, electrons, and valence electrons does it have?

1. How many shells does it have?

1. Draw its Lewis structure.

CCl4 + SbF3 = CCl2F2 + SbCl3

How many grams of CCl4 are needed to react with 5.0 mol SbF3?

A system releases 622 kJ of heat and does 105 kJ of work on the surroundings. What is the change in internal energy of the system?

Write the Kc and Kp for the following reactions. indicate whether the equilibrium system is homogeneous or heterogeneous.

a. 2KCIO3 (s) ⇌2KCI (s) + 3O2 (g)

b. 3O2(g) ⇌2O3 (g)

c. Bi2S3 (s) ⇌2Bi3+ (aq) + 3S¯² (aq)

Calculate the standard free-energy change for the reaction at 25 ∘C.

Refer to the list of standard reduction potentials.

2Au3+(aq)+3Mg(s)↽−−⇀2Au(s)+3Mg2+(aq)

Δ𝐺∘= kJ

In a particular redox reaction, NO is oxidized to NO−3 and Ag+ is reduced to Ag. Complete and balance the equation for this reaction in acidic solution. Phases are optional.

balanced redox reaction:

The Δ𝐻vap of a certain compound is 10.14 kJ·mol−1 and its Δ𝑆vap is 78.22 J·mol −1·K−1.

What is the boiling point of this compound?

A balloon comma inflated in an air conditioned room at 30° , has a volume of 5.0 l period is heated to a temperature of 50 degrees . Which of the following is the new volume of the balloon a balloon, inflated in an air condition room at 33, has a volume of 5.0 l. It's needed to temperature 50 degree Read following is the new volume of the balloon if