Answer:
The math is explained below. You need to include the amount by which the temperature of the calorimeter is found to rise by, which is missing on the quetion.
Explanation:
The amount that temperature of the calorimeter is found to rise is missing. So, I will do the math for a general amount X, and then will assume certain value to show the final calculation.
<u>1) Data from the calorimeter:</u>
- Raise of temperature of the calorimeter: X
- Ratio heat consumed: 4.87 J / 5.5°C (given)
- Energy absorbed by the calorimeter when its temperature increased X°:
(4.87 J / 5.5°C ) × X
<u>2) Data from the reaction:</u>
- number of moles of reactant: n
- Total amount of energy released by the reaction:
362 kJ/mol × 1,000J/Kj × n = 362,000n J
3) By the <u>law of conservation of the energy,</u> assuming the calorimeter does not release energy to the surroundings, you equal the energy released by the reaction to the energy absorbed by the calorimeter when its temperature raised X°.
- 362,000 n = (4.87 J / 5.5°C ) × X
- Solve for n: n = (4.87 / 5.5)X / 362,000
n = 0.000002446 X
That means that for every degree the temperature of the calorimeter is found to increase, the number of moles of reactant consumed are 0.000002446 moles.
<u>Example:</u>
So, if the temperature of the calorimeter is raised by 100°C, the number of moles of reactant will be:
- n = 0.000002446 × 100 = 0.0002446 mol
Answer:
A Scientific hypothesis must be testable, for a hypothesis to be testable means that it is possible to make observations that agree or disagree with it. This statement may or may not be true, but it is not a scientific hypothesis. That's because it can't be tested.
Explanation:
The answer is: B-It showed that atoms can be divided into smaller parts.
It showed that all atoms contain electrons.
Tomson concluded that atoms are divisible and that the corpuscles are their building blocks (atoms are made up of smaller particles).
J. J. Thomson discovered the electron in 1897.
His "plum pudding" model (1904) suggested: the electrons are embedded in the positive charge.
With this model, he abandoned his earlier hypothesis (the atom was composed of immaterial vortices).
Alchemists used science together with magic to accomplish tasks.
