Answer:
2060.775 J
Explanation:
From the question given above, we obtained the following data:
Specific heat capacity (C) = 0.129 J/g°C
Mass (m) = 355 g
Initial temperature (Tᵢ) = 95 °C
Final temperature (Tբ) = 140 °C
Heat (Q) tranfered =?
We can calculate the amount of heat transferred by using the following formula:
Q = mC(Tբ – Tᵢ)
Q = 355 × 0.129 (140 – 95)
Q = 45.795 × 45
Q = 2060.775 J
Thus, 2060.775 J of energy was transferred.
Answer is c , because it's convection currents
The changes in different properties such as concentration etc will change if the pH experiences a change.
<h3>
What is pH?</h3>
This is referred to the power of hydrogen and is a measure of the degree of acidity or alkalinity of a substance.
When pH changes, the concentration as well as other properties in this context.
Read more about pH here brainly.com/question/22390063
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Answer the correct option will be option B.
Explanation: this is how he showed the electron could orbit the nucleus without falling into it. This is so because he explained that the electron revolves around the nucleus in a fixed circular orbit with fixed energy and cannot occupy just any energy level which is defined as quantisation of energy.
option A is one of postulates given by Dalton in his Dalton's atomic theory which later proved to be wrong.
option C it is one of the postulates given by the in J.J Thomson in his model of an atom which was the first atomic model.
option D Schrodinger has used the wave nature to explain the position of electrons around the nucleus.
Answer:
B. A worker should not feel air moving around the chemical hood.
Explanation:
Hello!
In this case, since chemical hoods are used to remove the hazardous vapors given off by volatile chemicals, the idea is that the workers do not get in contact, in anyway, with those vapors as they can affect their health and safety at the laboratories.
It means that options A and C are ruled out because they describe an scenario in which the worker is in contact with the vapors and also because the vapors are removed via a fan system that withdraws the vapors.
Therefore the correct option is B. A worker should not feel air moving around the chemical hood.
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