General Chemistry Answers

What is the properties, electron configuration, orbirtal diagram and quantum numbers of last electron of the following elements:

*Lithium

*Aluminum

Consider this reaction: 2NOCI(g)⇌NO2(G)+CI2(g) ∆ H=77.16 KJ/mol

Predict the direction of shifting (to the left/right) if the following stresses are applied

1) [NOCI] is increased

2) Temperature is decreased

3)pressure is increased

4) [CI2] is increased

A solution is made by dissolving 48.5 g of NaCl in 300.0 g acetic acid. what is the molal concentration of the solution?

What is the vapor pressure in mm

 Hg of a solution prepared by dissolving 25.0 g

 of ethyl alcohol (C

2

H

5

OH)

 in 100.0 g

 of water at 25

∘

C?

The vapor pressure of pure

water is 23.8mmHg,

 and the vapor pressure of ethyl alcohol is 61.2 mmHg

at 25

∘

C.

(b) What is the vapor pressure of the solution if 25.0 g

 of water is dissolved in 100.0 g

 of ethyl alcohol at 25

∘

C?

Answer

calculate pH obtained by mixing equal volumes of 0.1M h2so4 and 0.3M Naoh

Calculate the ratio of the rate of effusion of methane gas ,CH4(g)at constant temperature and pressure The molar masses or CH4(g) and He (g) are 16.0 g/mol and 4.0 g/mol , respectively

Molecules with the shape of trigonal bipyramidal has ___ lone pairs and ___ bonding groups, respectively. 

Cyclohexane, CoHy2, has an enthalpy of combustion of -3921 kJ per mole of cyclohexane. What mass of carbon dioxide, in units of grams, is formed for every 1000.0 kJ of heat released from the complete combustion of cyclohexane at constant pressure?

How many Liters of water vapor could be made from 5 Liters of Methane gas?

Complete the equation of chemical reaction:

Nal+ Pb(NO3)2 (EXCESS)

Give a scheme of formed ionic micelle.