Exothermic reaction discharges energy in forms of
light, heat or sound, thus it is represented by negative flow of heat. In this
equation:
<span><span>
NaOH (aq) + H2SO4 (aq)
</span>à<span>
H2O (l) + Na2SO4 (aq)</span></span>
<span>
When the solution of Sodium hydroxide is added to the Sulphuric acid, water and Sodium
sulfate is produced. To balance this, we put (2) two on Sodium hydroxide and (2)
two on water.</span>
<span><u>
2</u><span>NaOH (aq) +
H2SO4 (aq) </span>à<u>
2</u><span>H2O
(l) + Na2SO4 (aq)</span></span>
<span> </span>
Question
Give a definition of mixture?
Why air is called a mixture?
Answer:
mixture - substance made by combining two more different materials in such a way that no chemical reaction occurs.
Air is a mixture because it is composed of gases like inert gases, carbon dioxide, oxygen, nitrogen an so on. Also dust particles are present in the atmosphere so air is a mixture .
Explanation:
Answer:
Relative rate of effusion for the orange to blue spheres = 1.531
Explanation:
Rate of effusion of Orange / Rate of effusion of blue = [Mblue / Morange]^1/2
Vrms = sqrt [(3RT/M)]
Vorange / Vblue = [ Mblue / Morange]^1/2
Rate of effusion of Orange / Rate of effusion of blue = 565/ 369 = 1.531
Elements present in group 18 are known as noble gases. The outermost shell of these elements are completely filled.
18 is the answer
Can you restate the questions again ?