Bath salts such as epsom contain hydrate salts such as mgso 4 ·7h 2 o (magnesium sulfate heptahydrate). when heated, water is released as vapor and anhydrous mgso 4 remains. determine how many moles of vapor are released when 15.5 g of mgso 4 ·7h 2 o are heated. hint: include h 2 o when calculating the molar mass.

What type of solution is formed if 10 g of kclo3 are dissolved in 100g of water at 30

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

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.