Two aqueous sulfuric acid solutions containing 20.0 wt% h2so4

(sg = 1.139) and 60.0 wt% h2so4 (sg = 1.498) are mixed to form a

4.00 molar solution (sg = 1.213). taking 100kg of the 20% feed

solution as a basis, calculate the feed ratio (liters 20%

solution/liter 60% solution).

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms