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If you used a standard calorimeter with 2.5L of water, and the temperature of the water changed from 18 degrees Celsius to 23 degrees Celsius, the specific heat capacity of water is 4.18 J/goC a) was the reaction endothermic or exothermic (explain how you know and what it implies about the reactants and products)? b) how much energy was released/absorbed?

What is the difference between the reactant order and the overall reaction order?  Include an example in your explanation.

For the reaction 4A(aq) + 3B(aq) –> C(aq) a) If a water based calorimeter that uses 1.5 kg of water started at 19 degrees C and after the reaction was complete, registered a temperature of 13 degrees Celsius, what was the change in enthalpy (

Give the electron configuration (only expand the valence electrons) for a) Mg2+ b) Mn c) S2- Show the hybridized configuration for AND give the type of hybridization a) Si in the molecule SiH4 b) C in CH4 c) explain why and when hybridization happens.

In response to the lead that the Soviets had taken in the space race when Yuri Gagarin became the first human to successfully orbit the earth, John F. Kennedy urged Congress to…

Explain the thermodynamics behind how a coffee cup calorimeter can determine the change in enthalpy for a reaction.

How do electron pairs contribute to molecular geometry (shapes of molecules)?

Complète la phrase en utilisant le bon pronom possessif. Ces documents sont à la secrétaire ? – Oui, ce sont _____________.

Complète la phrase en utilisant le bon pronom possessif. Et ces lunettes, elles sont au professeur ? – Non, ce ne sont pas _______________.

Complète la phrase en utilisant le bon pronom possessif ou le bon adjectif possessif.  Nos enfants sont plus calmes que _________.