Other Chemistry Answers

Crystals are characterized by particular patterns that repeat in how many dimensions?

The solid iodine quickly changes from a solid to gas while the solid sodiumchloride needs alot of energy to change into the liquid state. why is this so?

Which the following is exothermic process and why?
1: Be + e- ----> Be^-
2: Li + e- -----> Li^-
3: Na -----> Na^+ + e-
4: N + e- -----> N + e -
Here all atoms are gaseous atoms

The rate constant for the equation
2 C2F4 → C4F8
is 0.0469 M−1
· s
−1
. We start with 0.203 mol
C2F4 in a 2.00-liter container, with no C4F8
initially present. What will be the concentra-
tion of C2F4 after 1.00 hour ?

Hydrogen Bromide is formed by a reaction between hydrogen gas and bromine vapor.
Here is the equation, H2(g) + Br2(g) <==> 2HBr(g), with K(eq) = 3.5
Calculate the equilibrium concentration of all gases if 0.40 mol of H2(g) and 0.60 mol of Br2(g) are placed in a 4.0L container.

Nitrosyl Chloride, NOCl(g) decomposes to form nitrogen monoxide gas and chloride gas according to the following equation.
2NOCl(g) double arrow 2NO(g) + Cl2(g)
At a certain temperature, the equilibrium constant is 1.60 x 10-6 (that's supposed to be an exponent). Calculate the equilibrium concentrations of all gases if 0.800 moles of NOCL(g) are placed in a 2.00 L container.

Colligative properties (ΔTf , ΔTb) of sucrose with ethanol as a solvent (20%masse)?

Write down the expressions for K p and Kc for the following reaction. How are
they related?
CaCO3 (s)<---->CaO (s) + CO2 (g)

Describe three uses of rhodium as a catalyst (include both a written description and the balanced chemical equation)

Use collision theory to explain the following

Liquid gasoline will burn, but gasoline vapor will explode. (Hint: this example contains two factors.)

People who work in papaya-processing plants must wear gloves and masks for personal protection.

Campfires are stated with matches that are used to light loosely packed kindling (small pieces of very dry wood). (Hint: This example contains three factors).