Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. suppose that the volume of a particular sample of cl2 gas is 8.80 l at 895 torr and 25 ∘c. at what pressure will the volume equal 5.90 l if the temperature is 56 ∘c?

1474.0 torr.

Explanation:

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant.

T is the temperature of the gas in K.

P₁V₁T₂ = P₂V₂T₁

P₁ = 895.0 torr, V₁ = 8.8 L, T₁ = 25°C + 273 = 298 K.

P₂ = ??? torr, V₂ = 5.9 L, T₂ = 56°C + 273 = 329 K.

∴ P₂ = P₁V₁T₂/V₂T₁ = (895.0 torr)(8.8 L)(329 K)/(5.9 L)(298 K) = 1474.0 torr.

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explanation:

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied