im pretty sure, a shade of purple
The chemical formula for calcium hydroxide is Ca(OH)₂ and that of nitric acid is HNO₃. By these chemical formula it can be deduced that the number of equivalents per mole of Ca(OH)₂ is 2 because of 2 OH⁻ and for HNO₃ is 1 because of H⁺.
For the neutralization reaction, the number of equivalents should be equal.
V₁n₁ = V₂n₂
Substituting the known values and with the incorporation of the concept above,
(V₁)(0.0250 mol/L)(2 equivalents/mol) = (33.50 mL)(0.020 mol/L)(1 equivalent/mol)
V₁ = 13.4 mL
Hence, the volume of calcium hydroxide needed is approximately equal to 13.4 mL.
Answer:
B
Explanation:
thank you so much for the answer
545mm Hg in Kilopascals is 72.6607
I hope this helps you. Good luck stay safe, healthy and, happy!<3
<u>Answer:</u> The concentration of ethene is 0.286 M
<u>Explanation:</u>
Rate law expression for first order kinetics is given by the equation:
where,
k = rate constant =
t = time taken for decay process = 15.0 s
= initial amount of the reactant = 0.500 M
[A] = amount left after decay process = ?
Putting values in above equation, we get:
The concentration of reactant consumed = (0.500 - 0.357) M = 0.143 M
For the given chemical reaction:
1 mole of butene produces 2 moles of ethene
So, concentration of ethene = (2 × 0.143) M = 0.286 M
Hence, the concentration of ethene is 0.286 M