Total # Posts: 6
Which of the following are used to calculate total population growth of an area? Choose 3. A. Life expectancy B. Migration C. Male-female ratio D. Crude death rate E. Crude birth rate I chose A, D, E. Is this correct?
September 5, 2014
a candle was 27.9 grams. the mass of the candle that burned in 3 minutes was 7.2 grams. a) How many moles of wax were in the candle before it burned ? b) How many molecules are in the candle before it burned? c) How many moles of wax were used up during the burning? d) How ...
May 17, 2012
i was wondering if the following sentences correctly use the preterite and/ or imperfect: Juan pensaba que fue al amore al principio vista, pero Isabel empezo a trabjar con juan una dia despues de trabajo, Juan pidiera Isabel a comiera la cena con el
March 26, 2009