A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per
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Answer:
The mass of snow that the backpacker collected is: <em>D) 855g</em>
Explanation:
To boiling the water, the cooking pot requires 643kJ. This heat is due to the heat to melt the water and the heat to bring the water to boiling point.
The heat to melt the water is:
q = ΔHfusion××mass
And heat to bring water to boiling point is:
q = C×mass×ΔT
Where C is specific capacity of liquid water and ΔT is change in temperature (100°C, from melting point to boling point)
As the required energy required is 643000J:
643000J = ΔHfusion××mass + C×mass×ΔT
643000J = 6020J/mol××mass + 4,18J/g°C×mass×100°C
643000J = 334J/g×mass + 418J/g×mass
643000J = 752J/g×mass
855g = mass
<em>The mass of snow that the backpacker collected is 855g</em>
I hope it helps!