since we do not know how many adults are, set up the equation like this:
4/5=20/<em>x</em>
then, you would cross multiply and get
4<em>x</em>=100
Divide four on both sides, and you have
<em>x</em>=25
Answer:
2) 63:.75
Step-by-step explanation:
ask Google what's 15% off $75
Answer:
The answer to your question is 12 moles of water.
Step-by-step explanation:
Reaction
2 O₂ + CH₄ ⇒ CO₂ + 2 H₂O
If Oxygen is in excess, then the limiting reactant is methane and we calculate the moles of water produced considering the moles of methane.
1 mol of methane -------------- 2 moles of water
6 moles of methane --------- x
x = (6 x 2) / 1
x = 12 moles of water
2(3.14)(14)=87.92
answer is 88