Answer: B) -4819 kJ
Explanation:
The balanced reaction for combustion of octane is:
To calculate the number of moles, we use the equation:
given mass of octane = 100.0 g
Molar mass of octane = 114.33 g/mol
Putting in the values we get:
According to stoichiometry:
2 moles of octane give heat = -11018 kJ
Thus 0.8747 moles of octane give =
Thus -4819 kJ of heat is released by 100.0 g of octane assuming complete combustion.
In a homogenous
mixture, sugar was the solute and water was the solvent. Solubility is the maximum
amount of a solute that dissolves in a given amount of solvent at a constant
temperature. Solutes
are more soluble in a given solvent at higher temperatures. Therefore, when
temperature increases, the solubility of the solute also increases.
<span>Moreover, the solubility of the substance ranges from infinitely soluble such
as alcohol in water, to poorly soluble like silver chloride in water and the
species that dissolves, the solute, can be another liquid, gas or a solid.</span>
Answer:
1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.
2. J.J Thomson discovered electrons by conducting cathode ray experiment.
3. Dalton postulated that matter is made up of small particles caled atoms
Any single thing that can carry out life processes on its own is a dolphin.
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Answer:
<h3>
C. MEASURING CYLINDER</h3>
AND PLS BRAINLIEST I REALLY NEED IT THANKS WUV YOU HAHA
Explanation:
<h2>
#BRAINLYEVERYDAY</h2>
