Top answers

A chemist mixes together 0.450 mol N2 with 0.450 mol H2 in a sealed container. The mixture is heated and allowed to reach equilibrium. At equilibrium, the mixture contains 0.400 mol N2 and the total pressure is 500 kPa. Calculate Kp.

balanced equation: N 2 (g) + 3H 2 (g) <---> 2NH 3 (g) Both reactants and products are gases, therefore it affect Kp value. This equation reaches equilibrium as it is in a "sealed container", ...
NG
Answered by Nayan G. • Chemistry tutor
15439 Views

Explain the trend in the boiling temperatures of the elements on descending group 7, from fluorine to iodine.

Understanding the question: The process of boiling is heating the mixture until the liquid turns into gas. This process requires breaking intermolecular forces (interactions between molecules (eg: hydrogen b...
BY
Answered by Berna Y. • Chemistry tutor
14694 Views

Flask Q (volume = 1.00 x 103 cm3 ) is filled with ammonia (NH3) at 102 kPa and 300 K. Calculate the mass of ammonia in flask Q. (Gas constant R = 8.31 J K−1 mol−1 )

n = PV/RT 102 000 ×(1.00 × 10−3) / 8.31 × 300 = 𝑛 n= (4.091456077x10-2) Mass = n x 17 = 0.696g (3 sig figs only)
AR
Answered by Ashley R. • Chemistry tutor
7287 Views

What is a stereoisomer?

Stereoisomers are molecules with the same structural formula (same number of each type of atom bonded together in the same order e.g. carbon bonded to carbon bonded to oxygen) but with the atoms arranged dif...
LG
Answered by Lizzi G. • Chemistry tutor
4064 Views

Explain how the electron pair repulsion theory can be used to deduce the shape of, and the bond angle in, PF3 .

Number of electrons from P= 5 e , Number of electrons from 3F = 3 e , Total number of electrons around P = 8 e Therefore there is a total number of 4 electron pairs surrounding P. three of which are bond pai...
YA
Answered by Yusuf A. • Chemistry tutor
3816 Views