The first step is to balance the equation:
<span>C3H8 + 5O2 ---> 3CO2 + 4H2O
Check the balance
element left side right side
C 3 3
H 8 4*2 = 8
O 5*2=10 3*2 + 4 = 10
Then you have the molar ratios:
3 mol C3H8 : 5 mol O2 : 3 mol CO2 : 4 mol H2O
Now you have 40 moles of O2 so you make the proportion:
40.0 mol O2 * [3 mol CO2 / 5 mol O2] = 24.0 mol CO2.
Answer: option D. 24.0 mol CO2
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4
Numbers above zero are significant, as well as any zeros that appear in between two non-zero numbers.
Answer:
independent variable- instrumental music
dependent variable- Number of stacks of papers made
experimental variable- Group A has instrumental music
playing
constant- same task,
Explanation:
Let's write the balanced chemical reaction for this:
K₂CrO₄ + Pb(CH₃COO)₂ --> PbCrO₄ + 2 CH₃COOK
The products are lead(ii) chromate and potassium acetate. As you can notice, there is an exchange of ions involved for both reactants. This type ofreaction is called the <em>double-replacement reaction or also called metathesis</em>.
