Enter the symbol of a sodium ion, na+, followed by the formula of a sulfate ion, so42−

Can you reduce your impairment by drinking coffee or cold showers? true or false?

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.