The amount of energy, in Joules, that the food contains will be 414.8 Joules
<h3>Calories to Joule conversion</h3>
According to metrics, 1 kilocalorie = 4184 Joules.
100 Calories = 100/1000 = 0.1 kiloCalories.
0.1 kilocalories = 0.1 x 4184 = 414.8 Joules
More on metric conversions can be found here: brainly.com/question/10943201
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We first can get the No of moles of H2S = 0.25 x 1 mol(H2S) / 34 g (H2S)
= 0.0074 Moles
and according to the ideal gas low:
we can get p for H2S
PV = nRT
when we have V = 5 L & n = 0.0074 & R (constant)= 0.082 & T= 25 + 273 = 298 K
By substitution:
P* (5L) = (0.0074)*(0.082)*(298)
∴ P = 0.036 atm
By assuming Kp (should be given, you just missed it) = 0.12 at 25 C°
By substitution: to get P for NH3
0.12 = X ( P + X)
0.12 = X ( 0.036 + X)
∴X^2 + 0.036 X -0.12 = 0
by solving this equation we get
X= 0.365 atm
So to get the no of moles of NH3:
PV = nRT
0.365 * 5 = n ( 0.082*298)
∴ n = 0.075 moles
and to get the mass on (g) =no.of moles * molar mass
0.075 * 51 = 3.825 g NH4Hs
Answer:
Adding salt to the water increases the density of the solution because the salt increases the mass without changing the volume very much. When you add table salt (sodium chloride, NaCl) to water, the salt dissolves into ions, Na+ and Cl-. The volume increases by a small factor, but the mass increases by a bigger factor.
Explanation:
<span>If the temperature is -265 degrees on mercury at night, the temperature in Fahrenheit in -165 degrees. You get that answer by multiplying the -265 by 5/9.</span>