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How many moles are in 2.75 g of ethylamine, CH3CH2NH2?

How many milliliters of a 6.0 M HNO3 solution are needed to make 0.500 L of a 3.5 M HNO3 solution? Pay attention to units.

How many of the following names are correct? PCl5 potassium pentachloride NaCN sodium cyanide KrF4 krypton tetrafluoride Fe(NO3)2 iron (II) nitrate  

The density of mercury is 13.5 g/mL. What is the mass in kg of mercury that fills a 250 mL flask? Pay attention to units.

What is the concentration of HNO3 in the final solution when 70.0 mL of a 3.00 M HNO3 solution is diluted with pure water to a total volume of 0.15 L? Pay attention to units, mL vs. L

Choose the best verb for this sentence.  Conjugate the verb into the appropriate form.  Write only the verb form below.  Hint:  there will be 2 words in your answer.  Follow the model. Modelo:  Juan _______  ______________ (levantarse / secarse) después de ducharse.  se seca Pedro y Pablo ________ ______________ (peinarse / lavarse) las manos antes de comer.

Choose the best verb for this sentence.  Conjugate the verb into the appropriate form.  Write only the verb form below.  Hint:  there will be 2 words in your answer.  Follow the model. Modelo:  Juan _______  ______________ (levantarse / secarse) después de ducharse.  se seca Marta _____ ______________ (cepillarse / ponerse) los dientes.

Choose the best verb for this sentence.  Conjugate the verb into the appropriate form.  Write only the verb form below.  Hint:  there will be 2 words in your answer.  Follow the model. Modelo:  Juan _______  ______________ (levantarse / secarse) después de ducharse.  se seca Nosotros _______ ____________________(lavarse / ponerse) nuestros abrigos porque tenemos frío.

Answer the following question in Spanish in a complete sentence.  Use accent marks when needed. ¿Dónde te cepillas los dientes?

Answer the following question in Spanish in a complete sentence.  Use the ir + a + verb construction we’ve studied in Ch 5.  Follow the model. Modelo: ¿Qué va a hacer Inéz mañana? (estudiar) Inéz va a estudiar. ¿Qué vamos a hacer nosotros en el sábado? (jugar)