Answer:
0.744 mol
Explanation:
the balanced equation for the reaction is
8Fe + S₈ ---> 8FeS
molar ratio of Fe to S₈ is 8:1
number of moles of Fe - 55.0 g / 56 g/mol = 0.98 mol
number of moles of S - 23.8 g / 256 g/mol = 0.093 mol
if we are to assume that S₈ is the limiting reactant
if 1 mol of S₈ reacts with 8 mol of Fe
then 0.093 mol of S₈ reacts with - 8 x 0.093 mol = 0.744 mol of Fe
however there's 0.98 mol of Fe present but only 0.744 mol of Fe is needed
therefore Fe is in excess and S₈ is the limiting reagent
molar ratio of S₈ to FeS is 1:8
then 0.093 mol of S₈ reacts with - 8 x 0.093 = 0.744 mol of FeS
number of FeS moles produced is 0.744 mol
Answer:
These predictions are likely to be valid and should be needed.
Explanation:
Meteorologist made predictions about weather of a particular area on the data they received from the satellite. Meteorology is a branch of science in which we study about the atmosphere. It is mainly used for the forecasting of weather and meteorologists are those people or scientists who study the weather and research on different scales or instruments of weather.
Answer:
12 moles of propane.
Explanation:
From the question given above, the following data were obtained:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 127 °C
Number of mole (n) =?
Next, we shall convert 127 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 127 °C
T(K) = 127 + 273
T(K) = 400 K
Finally, we shall determine the number of mole of propane gas in the container. This can be obtained as follow:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 400 K
Gas constant (R) = 8.314 L.KPa/Kmol
Number of mole (n) =?
PV = nRT
184.8 × 216 = n × 8.314 × 400
39916.8 = n × 3325.6
Divide both side by 3325.6
n = 39916.8 / 3325.6
n = 12 moles
Thus, 12 moles of propane is present in the cylinder
<h3>
Answer: CO2</h3>
Explanation:
Well C2H6 there are 2 carbon and 6 hydrogen atoms
and having no number on the right of the letter means there is only one atom
