Na + 2 H2O --> 2 NaOH + H2 If 50 g of sodium (Na) is placed in water, what mass of hydrogen gas (H2) is produced?

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2

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

Which statement best describes the he properties of iconic compounds ?