How many grams of potassium chlorate are required to form 638 ml o2 at 128°c and 752 torr according to the equation below? 2kclo3(s) => 2kcl(s) + 3o2(g)?

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

What is the value of keq for the reaction expressed in scientific notation?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet