If you react 31.61 mL of a solution of 2.3 M HNO3 with 38.0 mL of a solution of Ca(OH)2, what is the molarity of the base?

2HNO3 + Ca(OH)2 --> 2H2O + Ca(NO3)2

is there multiple choice answers?

- 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

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements