Answer:
C) The student and desk have to be in contact to apply the force.
Explanation:
I am pretty sure :)
Get 100 dollars when every time someone lies to me
Answer:
The required flow rate of air in mol/h is 20144 and the percent by mass of oxygen in the product gas is 23,1%.
Explanation:
The air of 9 mole% methane have an average molecular weight of:
And a flow of 700'000g/h÷27,8g/mol = 25180 mol/h
In the reactor where methane solution and air are mixed:
In = Out
Air balance:
91% air×25180 mol/h + 100% air×X = 95%air×(X+25180)
<em>Where X is the flow rate of air in mol/h.</em>
<em>Solving, </em><em>X = 20144 mol air/h</em>
The air in the product gas is:
95%×(20144 + 25180) mol/h = 43058 mol air× 21%O₂ = 9042 mol O₂ ×32g/mol = 289 kg O₂
43058 mol air×29g/mol 1249 kg air
Percent mass of oxygen in the product gas is: =0,231 kg O₂/ kg air* 100 = 23,1%
I hope it helps!
Is it multiple choice? If not, the main reason would be the ability to escape from prey, or move to a different climate based on the individual needs.
The mass is 400
explanation
the formula for density is density equals mass divided by volume so you plug in .64 for the density and 625 for the volume. .64= m/625. to solve for mass you would multiply both sides by 625 to get the mass