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

Identify one mole of a substance.

The compound, NO6, is named

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.

A student weighs out 14.9 mg of vanadium. How many moles are in the sample? 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

What is the molarity concentration of FeBr3 in a solution prepared by dissolving 10.0 g of FeBr3 in enough water to make 550 mL of solution?

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 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)

Select the appropriate definite article to match the noun “teléfonos”