If an object has a density of 0.55 g/mL, what is its density in g/L (PLEASE HELP)

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

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.