An anhydrous sample of caco3 (100.089 g/mol) weighing 0.9849 g was quantitatively transferred into a 250.0 ml volumetric flask half-full of nanopure h2o. one milliliter of 12m hcl was added & the solution was swirled. then the flask was filled to volume with nanopure h2o. what is the molarity (m) of the solution?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

What happens to the atomic radius when an elctron is lost

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%