IM BEING TIMED
PLEASE NEED HELP ASAP!!!

Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3

Why does his teacher ask him to balance the equation by including the correct coefficient

How do you lengthen a pattern piece? (family and consumer science, sewing)