Determine the gram-formula mass of the magnesium sulfate heptahydrate. PLEASE INCLUDE WORK!

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

What will most likely happen when two bromine atoms bond together?