Answer:
No. of moles, n = 25.022 moles
Given:
Volume of gas in tank, V = 29.1 l
Temperate of gas, T =
= 273 + 35.8 = 308.8 K
Pressure of gas, P = 21.8 atm
Solution:
Making use of the ideal gas equation which given as:
PV = nRT
where
R = Rydberg's constant = 0.0821 L-atm/mol-K
Re-arranging the above formula for 'n' and putting the values in the above formula:

n = 25.022
Answer:
The total resistance is 106 Ω and the current in the circuit is 0.11 A.
Explanation:
Given that,
Voltage of the battery, V = 12 V
Resistors 34 Ω, 42Ω, and 30Ω are connected in series.
The total resistance is given by :}
R = 34 + 42 +30
= 106Ω
Let I is the total current in the circuit. Using ohm's law to find it such that,

Hence, the total resistance is 106 Ω and the current in the circuit is 0.11 A.
Force is mass into acceleration
and pressure is force applied per unit area.
Answer:
The minimum power the motor would need is 2035 Watts.
Explanation:
the minimum power motor needed is given by the total work done on the load, Wtot and the total time it takes the load to be lifted, given by:
P = Wtot/t
the forces doing works on the load is the gravitational force, Wfg and the frictional force, Wf the total work done on the load is:
Wtot = Wfg + Wf
= m×g×d + f×d
= d×(m×g + f)
= (30)×(200×9.8 + 75)
= 61050 J
it takes t = 30s for the load to be lifted high the building, the minimum power neeed is then:
P = Wtot/t
= (61050)/(30)
= 2035 Watts
Therefore, the minimum power the motor would need is 2035 Watts.
Orbiting, would be the answer to your question :)