Ca(ClO3)2→ CaCl2 + O2
What mass of O2 results from the decomposition of 17.00 g of calcium chlorate?

Can someone show the work and the answer

7.88 grams is the mass of oxygen gas results from the decomposition of 17.00 g of calcium chlorate.

Explanation:

Data given:

mass of calcium chlorate = 17 grams

atomic mass of calcium chlorate = 206.98 grams/mole

mass of oxygen formed =?

atomic mass of oxygen gas = 32 grams/mole

balance chemical reaction:

Ca(Cl) ⇒ + 3

Number of moles =

putting the values in the equation:

number of moles =

number of moles of calcium chlorate = 0.0821 moles

1 mole of calcium chlorate decomposes to release 3 mole of oxygen

0.0821 moles will release x moles of oxygen gas

=

x = 0.246 moles

mass = atomic mass x number of moles

mass = 0.246 x 32

mass = 7.88

7.88 grams of oxygen produced from decomposition of 17 grams calcium chlorate

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