Answer:
XeF₂
Explanation:
Let's call the compound as XeaFb, where a and b are the number of atoms of each element. In the beginning, the partial pressure of XeaFb was 16 torr. By Dalton's Law, the total pressure of a gas mixture is the sum of the partial pressures of the components, so:
pH₂ = 64 - 16 = 48 torr
The reaction that happened was:
XeaFb + (b/2)H₂ → aXe + bHF
The stoichiometry of the reaction is 1:b/2:a:b. If all the XeaFb reacts:
1 torr of XeaFb -------- b/2 torr of H₂
16 torr -------- x
By a simple direct three rule:
x = 16b/2 = 8b torr of H₂ reacts
1 torr of XeaFb -------- a torr of Xe
16 torr -------- x
x = 16a torr of Xe is formed
Thus, 8b + 16a = 32
b + 2a = 4
The empirical formula is the minimum integer number of the elements in the compound. So, let's suppose a = 1 because fluorine can do only one bond, thus it's unprovable that will be more than one Xe bonded with one F:
b + 2*1 = 4
b = 2
Thus, the empirical formula is XeF₂.
Answer:
5.39 g
Explanation:
The balanced equation for the reaction of aluminum with hydrochloric acid is shown below as:-
Given,
Pressure = 0.750 atm
Temperature = 30.0 °C
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T = (30.0 + 273.15) K = 303.15 K
T = 303.15 K
Volume = 10.0 L
Using ideal gas equation as:
PV=nRT
where,
P is the pressure
V is the volume
n is the number of moles
T is the temperature
R is Gas constant having value = 0.0821 L.atm/K.mol
Applying the equation as:
0.750 atm × 10.0 L = n × 0.0821 L.atm/K.mol × 303.15 K
⇒n = 0.3013 moles
Moles of hydrogen obtained = 0.3013 moles
From the reaction,
3 moles of hydrogen gas are furnished when 2 moles of aluminum is consumed.
Also,
1 mole of hydrogen gas are furnished when mole of aluminum is consumed.
Thus,
0.3013 mole of hydrogen gas are furnished when mole of aluminum is consumed.
Moles of aluminum consumed = 0.2 moles
Also, Molar mass of aluminum = 26.981539 g/mol
So, Mass = Moles*Molar mass = 0.2 moles*26.981539 g/mol = 5.39 g
So, the answer would be 20 cm
Answer:
The correct approach will be "Predict and control
".
Explanation:
- Psychology seems to be the study including its thought process as well as behavior. The psychological layouts in this article that the individual requires to understand, feel, and so on, whereas action seems to be how someone behaves.
- Psychologists as well as physicians speculated about either the relation was seen between the mind and perhaps the nervous system while philosophers struggled to understand the links between the organs.