To answer this item, we let x be the amount of the solution
that is 9% vinegar in mL and y be the amount of the solution that is 14%
vinegar, also in mL. The system of linear equation that would best allow us to
answer this item is,
<span> x
+ y = 290</span>
<span> 0.09x
+ 0.14y = 0.13(290)</span>
<span>The values of x and y in the equations are 58 and 232.
Thus, the amounts of the 9% vinegar solution and 14% vinegar solution are 58
and 232 mL, respectively. </span>
A unit of ppm has an acronym of parts per million. The
equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:
mass Ca+ = 1.3 g = 1300 mg
ppm = 1300 mg / 3100 kg
<span>ppm = 0.42 ppm</span>
You would calculate them by dividing them and then multiplying to get the final answer
Answer:
378.25°C
Explanation:
Given data:
Number of moles of gas = 0.750 mol
Volume of gas = 35.9 L
Pressure of gas = 114 KPa (114/101 = 1.125 atm)
Temperature of gas = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
now we will put the values.
T = PV/nR
T = 1.125 atm × 35.9 L /0.750 mol × 0.0821 atm.L/ mol.K
T = 40.3875/0.062/K
T = 651.4 K
Kelvin to °C:
651.4 K - 273.15 = 378.25°C
