Answer:
7.23 J
Explanation:
Step 1: Given data
- Mass of graphite (m): 566.0 mg
- Initial temperature: 5.2 °C
- Final temperature: 23.2 °C
- Specific heat capacity of graphite (c): 0.710J·g⁻¹K⁻¹
Step 2: Calculate the energy required (Q)
We will use the following expression.
Q = c × m × ΔT
Q = 0.710J·g⁻¹K⁻¹ × 0.5660 g × (23.2°C-5.2°C)
Q = 7.23 J
Answer:
323.15 °C
Explanation:
Considering the ideal gas equation as:
where,
P is the pressure
V is the volume
n is the number of moles
T is the temperature
R is Gas constant having value = 0.0821 L.atm/K.mol
Thus, at constant volume and number of moles, Pressure of the gas is directly proportional to the temperature of the gas.
P ∝ T
Also,
Using Charle's law
Given ,
P₂ = 2P₁
T₁ = 25 °C
T₂ = ?
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T₁ = (25 + 273.15) K = 298.15 K
Using above equation as:
New temperature = 596.3 K
Also,
T(K) - 273.15 = T( °C)
<u>So, Temperature = 596.3 - 273.15 °C = 323.15 °C</u>
Answer:
<h2>227.27 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question we have
We have the final answer as
<h3>227.27 mL</h3>
Hope this helps you
Answer: The atomic mass of E is 16
Explanation:Please see attachment for explanation
C. The expectations of the participants
Explanation:
The expectations of participants results in the placebo and nacebo effects. Usually, subjects in an experiment expect a certain type of outcome in their research process and this leads to the the placebo effects.
- Placebos are inert drugs with no therapeutic values.
- Nacebo effects arise from the negative expectations of subject which causes a sort of perceived harm.
- Participant expects a certain type of result from drug usage and their reactions can be skewed by this expectation.
Learn more:
something on experiments brainly.com/question/8203464
placebo brainly.com/question/12988866
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