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A _________ is a special, predefined formula that provides a shortcut for a commonly used calculation

A 2.0 L container is filled with N2 gas at 1 atm and 25 °C is connected by a closed valve to a 3.0 L container filled with O2 gas at 2 atm and 25 °C. When the valve is opened, what is the partial pressure of the N2 gas after mixing? Given P1V1 = P2V2 and the Ideal gas constant, R = 0.08206 L-atm/mol-K.

Calcium carbonate, CaCO3(s), the principal compound in limestone, decomposes upon heating to CaO(s) and CO2(g). A sample of CaCO3 is decomposed, and the carbon dioxide is collected in a 2.50 L flask. After decomposition is complete, the gas has a pressure of 1.3 atm at a temperature of 31 °C. How many moles of CO2 gas were generated? Given the ideal gas law PV = nRT and the Ideal gas constant, R = 0.08206 L-atm/mol-K.

The order of church services and the structure of each service are known as the liturgy.

J. Singular or Plural. Change the number of the words below. If the word is singular, make it plural and if the word is plural, make it singular.  ¡    ¿    ñ    á    é    í    ó    ú    Á    É    Í    Ó    Ú    Ñ   1. el lápiz

Which of the following is NOT a common characteristic for a gas?

What would listeners hear in a typical Bach chorale?

How many hybrid orbitals are available for silicon?

G. Vocabulario. Complete each statement using the most appropriate word from the list below. Use each word only once.   ocho       estudiantes       maleta       país       diccionario       conductor       mujer       palabras       capital       profesora   1. La _______________ es del pasajero.

K. ¿Qué hora es? Write out the time in complete statement. Do not forget to use the phrase in Spanish to describe it if is morning, afternoon or evening. ¡    ¿    ñ    á    é    í    ó    ú    Á    É    Í    Ó    Ú    Ñ   1). 1:30 p.m.