Answer:
6.2 g
Explanation:
<em>The mass of oxygen gas produced from 8.5 g CO2 would be </em><em>6.2 g</em><em>.</em>
First, let us look at the equation of the reaction:
From the equation, 6 moles of CO2 are required to produce 6 moles of O2.
<em>Recall that: </em><em>mole = mass/molar mass</em>
8.5 g of CO2 = 8.5/44.01 = 0.1931 mole of CO2
Since the ratio of CO2 to O2 is 1:1, 0.1931 moles of CO2 will produce 0.1931 moles of O2.
Hence, mass of oxygen produced = mole x molar mass
= 0.1931 x 32
= 6.2 g <em>to 2 significant digits.</em>
Answer:
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Explanation:
I attached the working and the answer to both questions below.
Please note that E = energy, ν = frequency, h = Plank's Constant
<span>The energy of a 4.66 x 10</span>¹⁴<span> Hz wave is
3.088 </span>
× <span>
10</span>
⁻¹⁷ J
