Write a balance equation for the rere
tion between dichromate son and iron (11)
to wield iron Cunil and chromium Cul)
in acealic Solution
Cr2O72- + feat Crat & fest

What metric units would you use to measure the thickness of a key

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world