If 15.60g of a hydrated compound is heated in an oven for several hours, its mass drops to 8.63g. assuming that the reduction in mass is due to the loss of water what is the percentage of water in the original hydrate?

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 is the percent by mass of oxygen in fe2o3

Word equation for k+ h2o yield koh + h2