I believe that it is B chemicals containing carbon
Answer:-
4.765 grams
Explanation:-
Molecular weight of Hydrogen gas H2 = 1 x 2 = 2 gram
Molecular weight of NH3 = 14 x 1 + 1 x 3 = 17 gram
The balanced chemical equation for the reaction is
N2 + 3 H2 --> 2 NH3
From the chemical equation we see
To produce 2 NH3 we need 3 H2 to react.
∴ To produce 2 x 17 grams of NH3 we need 3 x 2 grams of H2 to react.
To produce 27 grams of NH3 we need (3 x 2) x 27 / (2 x 17) grams of H2 to react
=4.765 grams of H2 to react
Balanced:
1. <span>Na2O + H2O ---> 2NaOH
2. </span><span>K2O + H2O ---> 2KOH
3. </span><span>MgO + H2O ---> Mg(OH)2
4. </span><span>CaO + H2O ---> Ca(OH)2
5. </span><span>SO2 + H2O ⇄ H2SO3
6. </span>SO3 + H2O ---> H2SO4
All except by 2 were balanced.
The first-order rate constant for the decomposition of N2O5
, 2N2O5(g)--> 4NO2(g)+O2(g)
at 70 C is 6.82x10^-3s-1. Suppose we start with 2.74×10−2 mol of N2O5(g) in a volume of 2.3L .
How many moles of N2O5 will remain?
The Integrate rate law can be shown as:
K is constant =
t is time
[A_0] is the intial mol
Molarity = [A_0] = n / V (liter) = 0.0274 /2.3 L = 0.0119 M
1243 .76 = log (0.0119) – log [A]
Thus , remaining amount of solute after 7 minute is 0.0072 mol /L