Asolution of water (kf=1.86 ∘c/m) and glucose freezes at − 3.75 ∘c. what is the molal concentration of glucose in this solution? assume that the freezing point of pure water is 0.00 ∘c.

Glucose freezes at -3.75 °C and freezing point of pure water is 0 °C. Thus, depression in freezing point or can be calculated as follows:

It is related to molal concentration as follows:

Here, is freezing point depression constant.

Rearranging to calculate molal concentration:

Therefore, molal concentration of glucose in the solution will be 2.02 m.

- 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

the answer is c i believe