Calculate the enthalpy change when 2 l of liquid nh3 is burned in air to give n2 (g) and h2o (g). express your answer using two significant figures.

A titration was performed on 50.0mL of 0.250 M NaOH. After the addition of 7.14mL of HCI, the phenolpthalein indicatorchanged from pink to colorless. What was the concentration ofthe hydrochloric acid?

A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 10.

A moving train comes to a stop at the station. What happened to make the train change motion? 1) The train experienced an unbalanced force. 2) The train experienced a balanced force. 3) The train would stop with or without forces.

Which chemical element has the shortest name?

What element has the largest atomic radius

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Effect of ph on conformation of aplha helix

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with