Selecciona aquellos elementos que consideres deben tenerse en cuenta para representar una reacción química en forma de ecuación química:

1 - audio phone numbers you want to invite some classmates to a party, but you do not have their telephone numbers. listen to each person's telephone number and write what you hear. follow the model september 22 11: 59 pm unlimited attempts remaining grade settings 63-65 grammar presentation tutorial model you see: elián you hear: it's eight, forty-three, zero, eight, thirty-five. you write: 843-0835 arturo: alicia: roberto: graciela: simon: eve: josé antonio:

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