Which substance is the oxidizing agent in the following reaction?Fe2S3 + 12HNO3 → 2Fe(NO3)3 + 3S + 6NO2 + 6H

 BONUS #4: Based on Le Châtelier’s principle, increasing pressure at constant temperature in the following reaction will not change the concentrations of reactants and products. TELL ME HOW YOU KNOW

The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg? SHOW WORK FOR THIS QUESTION

BONUS #1 Consider the reaction:FeO (s) + Fe (s) + O2(g) → Fe2O3 (s)Given the following table of thermodynamic data at 298 K: The value K for the reaction at 25 °C is ________. YOU MUST SHOW WORK FOR THIS QUESTION

Find the work done on the gas during the process shown.  There are 2 moles of gas held at a constant 300K.  The gas is compressed to half its original volume. image00555503405.jpg

A flexible ball with a moment of inertia of 0.5 kg m2 rotates with an angular velocity of 4 rad/s.  It begins to expand as it rotates, increasing its moment of inertia to 0.8 kg m2.  What is the new angular speed?

With what force do you need to push a 3 kg block across a surface with a coefficient of friction of 0.34 and maintain a constant speed of 3 m/s?

What is dance and socialization? What is the relationship between the two? 

China: Who were Liu Bei, Guan Yu, and Ahang Fei?

African Continent: Liberia Who were the Sande Society? What was the goal of this society? What were their practices?