( Please help ) How many moles of sodium (Na) are needed to produce 5.75 moles sodium sulfate (Na^2 (SO^4 ) according to the following unbalanced reaction : _ Na + _ H^2(SO^4) _ Na^2(SO^4) + _ H^2

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Areaction in which products can react to re-form reactants is