Answer:
The heat that was used to melt the 15.0 grams of ice at 0°C is 4,950 Joules
Explanation:
The mass of ice in the beaker = 15.0 grams
The initial temperature of the ice = 0°C
The final temperature of the ice = 0°C
The latent heat of fusion of ice = 330 J/g
The heat required to melt a given mass of ice = The mass of the ice to be melted × The latent heat of fusion of ice
Therefore, the heat, Q, required to melt 15.0 g of ice = 15.0 g × 330 J/g = 4,950 J
The heat that was used to melt the 15.0 grams of ice = 4,950 Joules.
Missing question: What is the total combined mass of carbon dioxide and water that is produced?
Chemical reaction: gasoline + O₂ → CO₂ + H₂O.
For this question use mass conservation law (mass of products is equal to mass of reagents): m(reactants) = m(products of reaction).
m(gasoline + oxygen) = m(carbon(IV) oxide + water).
m(carbon(IV) oxide + water) = 20 kg + 83 kg = 103 kg.
The answer is correct orientation and sufficient energy. Answer choice D
transfer of heat which changes the kinetic energy of the particles
Answer:
False
Explanation:
The force of gravity is not only determined by the mass of the two objects but also the distance.
The law of universal gravitation states the product of the masses is directly proportional to the gravitational force, but it is also indirectly proportional to the square of the distance between them.
In other words, the greater the masses of each the greater the gravitational force, but the greater the distance between the two, the weaker the gravitational force.