1. Sodium hydroxide sold commercially has a soluble anti caking agent added so the crystals won't clump up. If excess aqueous lead (II nitrate is added to a 5.0 g sample of commercially sold sodium hydroxide 12.7 g of lead (II) hydroxide are recovered through filtration . What is the % purity of the sample of sodium hydroxide ?

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon

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