B) B. is the point where it has maximum potential energy.
Explanation:
- This an example of projectile motion.
- In projectile motion, the path of an object is illustrated in the picture given. In the given picture, the minimum kinetic energy and the maximum potential energy is at B
- B is the point where the object, for example, the ball is reaching its point of minimum kinetic energy which means that after this point the object's downward motion starts.
- Hence, the transition from the upward motion to the downward motion is the point where it has the maximum potential energy.
Two atoms total are in NaCl.
Answer:
4510 J
Explanation:
To calculate the energy of the water, you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat capacity (J/g°C)
-----> ΔT = change in temperature (°C)
First, you need to determine the mass of the water. To do this, you need to multiply the given volume by the density of water (1.00 g/mL).
100.0 mL H₂O 1.00 g
------------------------ x ------------ = 100.0 g H₂O
1 mL
Now, you can plug the given values into the equation and solve for "Q" (Q = ). The final answer should have 3 significant figures to match the given values with the lowest number of sig figs.
Q = ? J c = 4.18 J/g°C
m = 100.0 g ΔT = 32.0 °C - 21.2 °C = 10.8 °C
Q = mcΔT
Q = (100.0 g)(4.18 J/g°C)(10.8 °C)
Q = 4510 J
At room temperature, number of moles of distilled water is 1 x10^-7. Hope it cleared your doubt.
Answer:
The molecular formula of the compound is C₂H₄F₂ or CH₃CHF₂
Explanation:
From the question given above, the following data were obtained:
Empirical formula of the compound = CH₂F
Fórmula mass of compound = 66 g/mol
Molecular formula of the compound =?
The molecular formula of the compound can be obtained as follow:
Molecular formula = [Empirical formula]ₙ
Molecular formula = [CH₂F]ₙ
[CH₂F]ₙ = 66
[12 + (2×1) + 19] n = 66
[12 + 2+ 19]n = 66
33n = 66
Divide both side by 33
n = 66/33
n = 2
Molecular formula = [CH₂F]ₙ
Molecular formula = [CH₂F]₂
Molecular formula = C₂H₄F₂
Thus, the molecular formula of the compound is C₂H₄F₂ or CH₃CHF₂