The bonds in the compound mgso4 can be described as
a. ionic, only
b. covalent, only
c. both ionic and covalent
d. neither ionic nor covalent

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Stage in which a typical star has completely stopped fusion