Interpretation:
The given table should be completed.
Concept Introduction:
The amount of the substance that contains same number of the atoms or the particles or the molecules is known as mole. The mass of the atoms that are present in the chemical formula is termed as Molar mass. It corresponds to the sum of the
Answer to Problem 3E
The complete table is represented as follows:
Chemical formula | Molar mass (g/mol) | Moles of what? |
Ne(s) | 20.180 | 1 mol Ne atoms |
Ca(s) | 40.078 | 1 mol Ca atoms |
CO2(g) | 44.009 | 1 mol carbon dioxide molecules |
CaCO3(s) | 84.087 | 1 mol calcium carbonate units |
CH4O(l) | 32.042 | 1 mol methanol molecules |
C2H6O(l) | 46.069 | 1 mol ethanol molecules |
Fe2O3(s) | 159.687 | 1 mol iron oxide units |
Explanation of Solution
Ne is an element having
Ca is an element of alkaline earth metals with atomic number 20 and molar mass 40.078 g/mol.
CO2 is a compound made up of one carbon atom and two oxygen atoms thus, the molar mass of CO2 is calculated as follows:
CaCO3 is a compound made up of one calcium, one carbon atom and three oxygen atoms thus, the molar mass of CaCO3 is calculated as follows:
CH4O is a compound made up of one carbon atom, 4 hydrogen atoms and one oxygen atoms thus, the molar mass of CH4O is calculated as follows:
C2H6O is a compound made up of two carbon atom, 6 hydrogen atoms and one oxygen atoms thus, the molar mass of C2H6O is calculated as follows:
Fe2O3 is a compound made up of two iron atoms and 3 oxygen atoms thus, the molar mass of Fe2O3 is calculated as follows:
Chapter U4 Solutions
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