Answer: ![62.7^0C](https://tex.z-dn.net/?f=62.7%5E0C)
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
![Q=m\times c\times \Delta T](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T)
Q = Heat absorbed= 16.7 kJ = 16700 J (1kJ=1000J)
m= mass of benzene = 225 g
c = specific heat capacity = 1.74 J/gK
Initial temperature of the water =
= 20.0°C = 293 k ![0^0C=273K](https://tex.z-dn.net/?f=0%5E0C%3D273K)
Final temperature of the water =
= ?
Change in temperature ,![\Delta T=T_f-T_i](https://tex.z-dn.net/?f=%5CDelta%20T%3DT_f-T_i)
Putting in the values, we get:
![16700=225\times 1.74\times (T_f-293)](https://tex.z-dn.net/?f=16700%3D225%5Ctimes%201.74%5Ctimes%20%28T_f-293%29)
![T_f=335.6K=62.7^0C](https://tex.z-dn.net/?f=T_f%3D335.6K%3D62.7%5E0C)
The final temperature will be ![62.7^0C](https://tex.z-dn.net/?f=62.7%5E0C)
The correct answer is this one: "D) significantly more than 100 billion gallons ." Clouds dump around 100 billion gallons of water on rainforests each year. The amount of rain is evaporated from the rivers, lakes and surface of rainforests each year is significantly more than 100 billion gallons<span> </span>
This can be answered using the beat frequency formula, which is simply the difference between 2 frequencies.
Let: <span>fᵇ = beat frequency
</span>f₁ = first frequency
f₂ = second frequency
fᵇ = |f₁ - f₂|
substituting the values:
fᵇ = |24Hz - 20Hz|
fᵇ = 4Hz
The unit Hz also means beats per second, therefore:
<span>fᵇ = 4 beats per second
</span>
Therefore, the answer is C. 4
The momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.
<h3> MOMENTUM:</h3>
Momentum of a substance is the product of its mass and velocity. That is;
Momentum (p) = mass (m) × velocity (v)
According to this question, an object has a mass of 5kg and velocity of 1.2m/s. The momentum is calculated thus:
Momentum = 5kg × 1.2m/s
Momentum = 6kgm/s.
Therefore, the momentum of a 5kg object that has a velocity of 1.2m/s is 6.0kgm/s.
Learn more about momentum at: brainly.com/question/250648?referrer=searchResults