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Write the chemical formula of each of the compound below. A) phosphorus trioxide B) sodium nitrite C) titanium(IV) chloride D) sulfur dioxide

Balance the chemical equation below.  C2H6 + O2 –> CO2 + H2O What is the sum of the coefficients?

Predict the products of the reaction below, and write the formulas in the space provided. (Do not worry about balancing the equation.) Na2SO4 + Ca(NO3)2 –>   

poder (ella)

ir (ustedes)

Choose the correct stressed possessive adjective or pronoun:

vivir  (tú)

Choose the correct conjugation in the IMPERFECT Tense. 

dar (tú)

hacer (nosotros)