Recent questions in Chemical Principles

Chemical Principles

shazli_1991
Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) <-----> PCl3 (g)+ Cl2(g); Kc= 1.80 at 250 °C
A 0.463 mol sample of PCl5(g) is injected into an empty 4.80 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at ...
gangadarr
What is the balanced chemical equation for the reaction used to calculate δH∘f of CaCO3(s)?
If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for...
ryangosling
Which of the following is not one of the body's chemical buffering systems?
A) Phosphate B) Bicarbonate C) Hydrochloride D) Hydrochloride, bicarbonate and phosphate are all buffering systems
gangadarr
What is the balanced chemical equation for the reaction used to calculate δH∘f of CaCO3(s)?
If fractional coefficients are required, enter them as a fraction (i.e. 1/3). Indicate the physical states using the abbreviation (s), (l), or (g) for...
ryangosling
Which of the following is not one of the body's chemical buffering systems?
A) Phosphate B) Bicarbonate C) Hydrochloride D) Hydrochloride, bicarbonate and phosphate are all buffering systems
shazli_1991
Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) <-----> PCl3 (g)+ Cl2(g); Kc= 1.80 at 250 °C
A 0.463 mol sample of PCl5(g) is injected into an empty 4.80 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at ...