Answer:
Explanation:
a )
energy produced per second = 500 J
Heat produced = 500 x .8 = 400 J per second.
If m be the mass of water evaporated per unit hour
m x latent heat = 400 x 60 x 60
= m x 2.42 x 10⁶ = 1.44 x 10⁶
m = .595 kg per hour
b )
volume of water = 595 mL
bottles = 595 / 750
.8 or 4/5 of bottle. per hour.
Answer:
992.302 K
Explanation:
V(rms) = 750 m/s
V(rms) = √(3RT / M)
V = velocity of the gas
R = ideal gas constant = 8.314 J/mol.K
T = temperature of the gas
M = molar mass of the gas
Molar mass of CO₂ = [12 + (16*2)] = 12+32 = 44g/mol
Molar mass = 0.044kg/mol
From
½ M*V² = 3 / 2 RT
MV² = 3RT
K = constant
V² = 3RT / M
V = √(3RT / M)
So, from V = √(3RT / M)
V² = 3RT / M
V² * M = 3RT
T = (V² * M) / 3R
T = (750² * 0.044) / 3 * 8.314
T = 24750000 / 24.942
T = 992.302K
The temperature of the gas is 992.302K
Note : molar mass of the gas was converted from g/mol to kg/mol so the value can change depending on whichever one you use.
Ionic crystals are hard because of tight packing lattices, say, the positive and negative ions are strongly attached among themselves.
See attachment file below.
Use formulas relating pka, ka, and ph
Hope it helped!
Answer:
(a). second order.
(b). zeroth order.
(c). one and a half order.
(d). third order.
Explanation:
Hello,
In this case, you just have to add the concentration's powers in each rate law:
(a) ![r=k[NO_2]^2](https://tex.z-dn.net/?f=r%3Dk%5BNO_2%5D%5E2)
Just the 2-power is present, so it is a second order law.
(b) 
No power is present, so it is a zeroth order law.
(c) ![r=k[H_2]*[Br_2]^{1/2}](https://tex.z-dn.net/?f=r%3Dk%5BH_2%5D%2A%5BBr_2%5D%5E%7B1%2F2%7D)
1 plus 1/2 gives 1.5, that is why it is a 1.5 (one and a half) order law.
(d) ![r=k[NO_2]^2[O_2]](https://tex.z-dn.net/?f=r%3Dk%5BNO_2%5D%5E2%5BO_2%5D)
2 plus 1 gives 3, that is why it is a third order law.
Best regards.
