AP Chemistry

Consider the reaction. Mn3N2 (s) +H2O (l) → Mg(OH)2 (s) + NH3 (g) a) Balance the equation and name each compound. b) How many moles of Mg(OH)2 are produced from .319 mol of magnesium nitride? c) How many grams of water are necessary to produce 4.39 mol of ammonia? d) If 12.48g of magnesium hydroxide are ...continues

Calculate the mass of material required if 1000 calories of energy causes a change from

Calculate the mass of material required if 1000 calories of energy causes a change from -27ºF to 91ºC and the specific heat capacity is 0.25 joules/gram-degree C. The distance planet Inverse has a unique temperature scale. Their degree is not equivalent of our Celsius degree; they measure the freezing point of water as 100 ...continues

AP Chemistry Test Review.

1. Consider ammonia gas (NH3), which is produced by reacting nitrogen gas and hydrogen gas. a. Write a balanced equation for the reaction. b. A one-liter flask contains 0.20 nol of nitrogen at room temperature and 1.5 atm pressure. Another 1.0-L flask contains 0.60 mol of hydrogen at the same room temperature. What is the pr ...continues

AP Chemistry: Charles Law Concept Questions.

I included Charles law lab preocedures for reference and questions are in MS words format. (See attached files for full problem description) --- 1. When the flask is submerged in the boiling water, what is happening to the gas inside the flask? 2. Compare the pressure of the gas outside the flask with the pressure of th ...continues

AP CHemistry: Determination of Iron by reaction with Permanganate- A redox titration.

(See attached file for full problem description) --- Introduction: Potassium permanganate, KMnO4, is widely used as an oxidizing agent in volumetric analysis. In acid solution, MnO4- ion undergoes reduction to Mn2+ as shown in the following equation: 8 H+ (aq) + MnO¬4- (aq) + 5 e-  Mn2+ (aq) + 4 H2O Since the Mn ...continues

AP Chemistry: Determination of a chemical Formula II

(See attached file for full problem description) --- Experiment 4 Data and Calculations: Determination of a Chemical Formuia Atomic masses: Copper___63.546_. Cl_35.453___. H__1.00794__.O__159994___. Mass of crucible ____22.74 _ g Mass of crucible and hydrated sample ____23.74 _ g ...continues

Relationship of mole to amu

Relationship of mole to amu. Is mole same thing as amu?

AP Chemistry: Test Review

(See attached file for full problem description) --- I need full explanation of each step. Please help. 1. The helium ion, He+, has energy levels similar to those of the hydrogen atom, since both species have only one electron. The energy levels of the He+ ion are given by the equation En = - 5248.16 kj/mole n = ...continues

Blending of two wines with different concentrations of acid

Two wines are available for blending: One tank of 1000 L has a Titratable Acidity of 9.0 g/L and another tank containing 2000 L has a Titratable Acidity of 0.6 g/L. Question: How much volume do you need to blend to make the 9.0 g/L Titatrable Acid wine equivalent to 7.2 g/L? What is the final volume of the blend? Show ...continues

AP Chemistry Test Review: Gases

(See attached file for full problem description) --- 31. A sample of H2 gas occupies 615 mL at C and 575 mm Hg. When the gas is cooled, its volume is reduced to 455 mL and its pressure is reduced to 385 mm Hg. What is the new temperature of the gas? 54. Hydrogen can be made in the "water gas reaction." If you ...continues