Which is the correct equation for the reaction of magnesium with hydrochloric acid to produce hydrogen gas and magnesium chloride? O Mg + 2HCl -> 2H + MgCl2
O Mg + 2HCl -> H2 + MgCl2
O2Mg + 6HCl -> 3H2 + 2MgCl2
O Mg + HCl -> H+MgCl

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

Do polar molecules have ionic bonds?