Answer:
The correct option is;
d 4400
Explanation:
The given parameters are;
The mass of the ice = 55 g
The Heat of Fusion = 80 cal/g
The Heat of Vaporization = 540 cal/g
The specific heat capacity of water = 1 cal/g
The heat required to melt a given mass of ice = The Heat of Fusion × The mass of the ice
The heat required to melt the 55 g mass of ice = 540 cal/g × 55 g = 29700 cal
The heat required to raise the temperature of a given mass ice (water) = The mass of the ice (water) × The specific heat capacity of the ice (water) × The temperature change
The heat required to raise the temperature of the ice from 0°C to 100°C = 55 × 1 × (100 - 0) = 5,500 cal
The heat required to vaporize a given mass of ice = The Heat of Vaporization × The mass of the ice
The heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal
The total heat required to boil 55 g of ice = 29700 cal + 5,500 cal + 4,400 cal = 39,600 cal
However, we note that the heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal.
The heat required to vaporize the 55 g mass of ice at 100°C = 4,400 cal
Answer:2NaF is the correct one. It’s a simple combination and can be be split with relative ease
Explanation:
Answer:
The amount (mass) of water we will have is 17.869 grams
Explanation:
The molar mass of hydrogen gas H₂ = 2.016 grams/mole
The molar mass of oxygen gas = 31.999 g/mol
Therefore, 2.00 g of hydrogen will give;
2.00/2.016 = 0.9921 moles of H₂ gas and
15.87 g of O₂ will give;
15.87/31.999 = 0.49595 moles
The reaction is as follows;
2H₂ (g) + O₂ (g) → 2H₂O (l)
Two moles of H₂ react with one mole of O₂ to produce two moles of H₂O
Therefore 0.9921 moles of H₂ will react with 0.9921/2 or 0.49595 moles of O₂ to produce 0.9921 moles of H₂O
From the above we note that all the H₂ and O₂ are completely consumed to form 0.9921 moles of H₂O
Molar mass of H₂O = 18.01528 g/mol
Number of moles = Mass/(Molar mass)
∴ Mass of H₂O = (Molar mass) × (Number of moles)
= 18.01528 g/mol × 0.9921 moles = 17.869 grams
Therefore the amount (mass) of water we will have = 17.869 grams.
Answer:
7650
Explanation:
formula- multiply the volume value by 1e+6
Hello!
The reduction in particle size results in an increased rate of solution. It occur because is harder for a a solvent to surround bigger molecules.
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