#1. a salt crystal has a mass 0.14mg, how many nacl formula units does it contain? express your answer using two significant figures. #2. how to write sodium carbonate and lead (ii) nitrate as a complete ionic equation and as a net ionic equation?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough