0.2 × 6.022 × 10²³ = 12.044 × 10²² = 1.2044 × 10²³
The reaction is at equilibrium at 1,000 K. The equilibrium constant of the reaction is 3.90. At equilibrium, the concentrations are as follows.
[CO] = 0.30 M
[H2] = 0.10 M
[H2O] = 0.020 M
What is the equilibrium concentration of CH4 expressed in scientific notation?
answer is b
We know that the pH of neutral solutions is 7, for acidic solutions is less than seven and for basic solutions is greater than 7.
pH = -log[H+]
pH = -log ( 1 x 10⁻⁴)
pH = 4
The answer is:
A) Acidic
Answer:
491.4 g
Explanation:
This a stoichiometry question, let me repeat the reaction equation here;
2 Na + Cl2 --> 2 NaCl
The balanced reaction equation must serve as a guide in solving any problem on stoichiometry.
From the balanced reaction equation;
1 mole of chlorine gas yields 2 moles of sodium chloride
Therefore, 4.2 moles of chlorine gas yields 4.2 ×2/1 = 8.4 moles of sodium chloride.
Molar mass of sodium chloride= 23 + 35.5= 58.5 gmol-1
Mass of sodium chloride formed= number of moles × molar mass
Mass of sodium chloride formed= 8.4 × 58.5= 491.4 g
KCl not sure if you meant that