0.590 mol of calcium carbonate are in 63.8 g of calcium carbonate.
<u>Explanation:</u>
Chemical substances are framed with respect of their molar quantity, as these are molar ratios, not mass, that occur in stoichiometrically balanced equations. We divide mass by the molar mass of a single molecule or unit of formula to extract moles from mass.
In order to start calculation, firstly the molar mass of calcium carbonate is needed to be detected as follows:
The molar mass of calcium = 40.08 g/mol, carbon is = 12.01 g/mol while for oxygen = 16.00 g/mol.
Thus adding above quantities to calculate molar mass of calcium carbonate: 40.08 + 12.01 + 3(16.00) = 108.09 g/mol.
Now by dividing the mass of calcium carbonate to its molar mass:
63.8g / 108.09 g/mol = 0.590 mol of calcium carbonate.
A. Aluminum......................
50 degrees, the angle of incident is always equal to the angle of reflection
Answer: Explanation:
If we apply the hybridization rule then it states that if the sum of the number of sigma bonds, lone pair of electrons and odd electrons is equal to three then the hybridization is sp2.
Answer: less oxygen available at higher altitudes
Explanation:
The higher in elevation you get, the lower the air pressure, allowing oxygen atoms to spread out farther, therefore making available oxygen less.