Explain why alkali metals do not form divalent ions.
1 answer:
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The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
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<u>Answer:</u> The mass of rust that can be removed is 1.597 grams
<u>Explanation:</u>
To calculate the number of moles for given molarity, we use the equation:
.....(1)
Molarity of oxalic acid solution = 0.1255 M
Volume of solution = = 600 mL = 0.600 L (Conversion factor: 1 L = 1000 mL)
Putting values in equation 1, we get:
For the given chemical reaction:
By Stoichiometry of the reaction:
6 moles of oxalic acid reacts with 1 mole of ferric oxide (rust)
So, 0.06 moles of oxalic acid will react with = of ferric oxide (rust)
To calculate the mass of rust for given number of moles, we use the equation:
Molar mass of rust (ferric oxide) = 159.7 g/mol
Moles of rust = 0.01 moles
Putting values in above equation, we get:
Hence, the mass of rust that can be removed is 1.597 grams