Answer:
They are simple to build and/or design.
Explanation:
Hope this helps ??
<span>A chemical change has occurred creating a precipitate.
Just had that question on a quiz. XP
Hope I helped :)</span>
Answer:
ΔS = 4.1 J/K
Explanation:
Enthalpy (H) is defined as the amount of energy released or absorbed during a chemical reaction.
Entropy (S) defines the degree of randomness or disorder in a system.
The relationship between both parameters is given as;
ΔS = ΔH / T
ΔH = 26.7 KJ/mol for 1 mol of diethyl ether
number of moles = mass / molar mass
number of moles = 3.4 / 72 = 0.04722
ΔH = 26700 * 0.04722 = 1260.77 J
T = 34.6 + 273 = 307.6 (upon converting to kelvin temperature)
ΔS = 1260.77 / 307.6
ΔS = 4.1 J/K
special rivets are added and they are built with sleek, tapering lines
Answer:
56.1 ppm
Explanation:
Molar mass of KOH is 56.1g
Mass of 0.01 mole of KOH = 0.561g
Mass of water = 10kg = 10000g
Concentration of KOH in ppm = 0.561 / 10000 * 1000000
= 56.1 ppm