A.) 3 H2SO4 + 2 Al > Al2(SO4)3 + 3 H2
6 H+ +3 S +12 O +2 Al> 2 Al + 3S + 12O + 6H+
This one is balanced, with 6 H, 3 S, 12 O, and 2 Al on both sides.
B.) 2KCl + Pb(NO3)2 > KNO3 + PbCl2
2K + 2Cl + Pb + 2N +6 O > 1 K + 1 N+ 3 O + Pb + 2 Cl
This one is not balanced as there is 2 K, 6 O and 2 N on the reactants side but only 1 K, 3 O, and 1 N on the products side.
Therefore, only A.) is balanced
18 is the max number of the atoms and molecules can be on a single stralicule ring.
Answer:
Number of moles of hydrogen are 0.022 mol.
Explanation:
Given data:
Volume of hydrogen = 546 mL
Temperature = 30°C
Pressure = 100.45 kpa
Number of moles of hydrogen = ?
Solution:
According to ideal gas equation,
PV = nRT
P = pressure
V = volume
n = number of moles
R = ideal gas constant
T = temperature
First of all we will convert the units,
Temperature = 30 + 273 = 303 K
Pressure = 100.45 /101 = 0.99 atm
Volume of hydrogen = 546 mL× 1L /1000 mL =0.546 L
Now we will put the values in formula,
PV = nRT
n = PV/RT
n = 0.99 atm × 0.546 L /0.0821 atm.L/mol.K × 303 K
n = 0.541 atm. L / 24.876 atm.L / mol
n = 0.022 mol
Answer: hope it help
Explanation:
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