Chemistry Answers

Atmospheric pressure on the peak of the highest mountain can

be as low as 150 Torr, which is why climbers need to bring

oxygen tanks for the last part of the climb. If the climbers carry

8.0 liter tanks with an internal gas pressure of 3040 Torr, what

will be the volume of the gas when it is released from the

tanks?

what is the percent hydrogen. in ammonium oxalate

4. Balance the following redox reaction in a basic solution. Use any method you prefer (oxidation number method or half reaction method). Ce4+ + I –  Ce3+ + IO3 –

Balance the following redox reaction in an acidic solution using any method you prefer (oxidation number or half reaction). H2PO2 - + TeO4 2-  PO4 3- + Te

~ How would you describe MDMA's bonding arrangement according to Valence Bond Theory? Include details with respect to bond angles and orbital hybridization, the presence of σ and π bonds, etc.

~How would you describe its general shape and intermolecular forces? What does its shape have to do with its functions, effects, and properties?

~ How would you describe MDMA's (C11H15NO2) bonding arrangement according to Valence Bond Theory? Include details with respect to bond angles and orbital hybridization, the presence of σ and π bonds, etc.

~How would you describe its general shape and intermolecular forces? What does its shape have to do with its functions, effects, and properties?

 pH = 6.0

0.000675 M

 0.000675 M calcium hydroxide

An organic compound X contains 40% carbon, 6.7% hydrogen and the rest oxygen. The vapour density of X is 30. The compound reacted with a compound Y and a colourless gas Z which turn limewater milky. On boiling under reflux, the mixture of X and W, gives a sweet smelling liquid G was formed.i. determine the empirical and molecular formula of X.ii. identify Y, Z, W and G.iii. Give the formula of the functional group present in Xiv. Deduce the structure of the compound Xv. Name the reaction which take place between X and W, and write the equation for the reaction of X and W.