The solution for this problem is:
C6H5NH3Cl is a strong salt: C6H5NH3+ + Cl- C6H5NH3+ + H2O <-----> C6H5NH2 + H3O+
K = Kw/ Kb= 1.0 x 10^-14 / 3.8 x 10^-10= 2.6 x 10^-5
=2.6 x 10^-5 = x^2 / 0.240-x
x = [H3O+] = 0.00251 M
pH = 2.60 is the concentration
We calculate first the initial pressure of the gas.
P = nRT/V
= (0.215 g/mL)(1 mol/16 g)(0.0821 L.atm/mol K)(302K)
= 0.333 atm
Using the relationship between the pressure and temperature,
P1/T1 = P2/T2
Substituting the known values,
(0.333 atm) / (29 + 273) = P2/(950)
P2 = 1.05 atm
In a thermochemical equation, the enthalpy change is always written next to the balanced chemical equation.
For example, chemical reaction:
2Mg + O₂ → 2MgO. ΔH = -1204 kJ; this is exothermic reaction,
or chemical reaction: Fe₂O₃(s)
+ 3CO(g) → 2Fe(s) + 3CO₂<span>(g);ΔH = + 26.3 kJ, ths is endothermic reaction.</span>
<span>There are two types
of reaction: endothermic reaction (chemical reaction that absorbs more
energy than it releases) and exothermic reaction (chemical reaction that
releases more energy than it absorbs). </span>
A substance that consist of two elements is one IN WHICH THE ELEMENTS ARE CHEMICALLY COMBINED IN A FIXED PROPORTION.A compound is a substance that is made up of two or more elements which have undergone chemical reaction together and their individual properties have been lost during the reaction, thus a compound has properties that are different from those of its constituents elements. Compounds are usually combined in specific fixed ratio.
Answer:
we use the chemistry in our day to day life cooking and cleaning with chemical substance
Explanation:
