Question

fill in the missing words
note to students: for molar mass values, use periodic table from the textbook. all answers must be reported with the correct number of significant figures.
one mole of water weighs grams. molar mass of water is g/mol.
one mole of zinc chloride weighs grams. molar mass of zinc chloride is g/mol.
one mole of glucose c₆h₁₂o₆ weighs grams. the molar mass of glucose is g/mol.

Explanation:

Step1: Calculate molar - mass of water

Water is $H_2O$. The molar mass of $H$ is approximately $1.01\ g/mol$ and of $O$ is approximately $16.00\ g/mol$. So, $M_{H_2O}=2\times1.01 + 16.00=18.02\ g/mol$. One - mole of water weighs $18.02$ grams.

Step2: Calculate molar - mass of zinc chloride

Zinc chloride is $ZnCl_2$. The molar mass of $Zn$ is approximately $65.38\ g/mol$ and of $Cl$ is approximately $35.45\ g/mol$. So, $M_{ZnCl_2}=65.38+2\times35.45 = 65.38 + 70.90=136.28\ g/mol$. One - mole of zinc chloride weighs $136.28$ grams.

Step3: Calculate molar - mass of glucose

Glucose is $C_6H_{12}O_6$. The molar mass of $C$ is approximately $12.01\ g/mol$, of $H$ is approximately $1.01\ g/mol$, and of $O$ is approximately $16.00\ g/mol$. So, $M_{C_6H_{12}O_6}=6\times12.01+12\times1.01 + 6\times16.00=72.06+12.12 + 96.00 = 180.18\ g/mol$. One - mole of glucose weighs $180.18$ grams.

Answer:

One mole of water weighs $18.02$ grams. Molar mass of water is $18.02$ g/mol.
One mole of zinc chloride weighs $136.28$ grams. Molar mass of zinc chloride is $136.28$ g/mol.
One mole of glucose $C_6H_{12}O_6$ weighs $180.18$ grams. The molar mass of glucose is $180.18$ g/mol.