Good the equation is balanced already
Answers:
1.
The mole ratio of AlCl₃ to Cl₂ is 2 : 3. This means for production of every 2 moles of AlCl₃ 3 moles of Cl₂ is consumed. Hence, if 3 moles of AlCl₃ is produced then Cl₂ consumed is,
= 3 × 3 / 2
= 4.5 moles of Cl₂
2.
Mole ratio of C₃H₈ to CO₂ is 1 : 3.
Hence, 0.5 moles of C₃H₈ will produce 1.5 moles of CO₂.
Also,
At STP one mole of an ideal gas occupied 22.4 L of volume. Hence, 1.5 moles of CO₂ gas will occupy,
Volume = 1.5 mol × 22.4 L/mol
Volume = 33.6 L of CO₂
Answer: I think it’s A sorry if I’m wrong
Explanation:
Answer:
5.0
Explanation:
We have a buffer system formed by a weak base (C₅H₅N) and its conjugate acid (C₅H₆N⁺). We can calculate the pOH using the Henderson-Hasselbach's equation.
pOH = pKb + log [acid]/[base]
pOH = -log 1.8 × 10⁻⁹ + log 0.02/0.01
pOH = 9.0
Then, we will calculate the pH.
pH + pOH = 14
pH = 14 - pOH = 14 - 9.0 = 5.0
ANSWER: A
EXPLANATION:
THE FORMULA FOR DENSITY IS MASS DIVIDED BY VOLUME.
D= M/V
So divide the mass by the volume.
For A, 122 divided by 10.5 is 11.62
For B, 132 divided by 14.2 is 9.295
For C, 115 divided by 16.1 is 7.143
For D, 126 divided by 12.7 is 9.921
A IS THE ANSWER BECAUSE ITS THE LARGEST AMOUNG THE OTHERS.