Answer:
The heat absorbed by the process is -1,634.27 J
Explanation:
Here, we have
Mass of KCl = 6.4 g
Mass of water = 42 g
Initial temperature of water = 20.60°C
Final temperature of the water = 11.30°C
Specific heat capacity of water = 4.184 J/g·°C
Based on the principle of conservation of energy, which states that energy can neither be created nor destroyed, but changes from one form to another, we have
The heat absorbed in the process is equal to the heat lost by the water present in the dissolution
Heat lost by water = ΔH = 42 × 4.184 × (11.3 - 20.6) = -1,634.2704 J
Heat lost by water = 1.63 kJ
∴ The heat absorbed by the process = -1,634.2704 J
The question is incomplete. The complete question is :
Hydrogen 
gas and oxygen 
gas react to form water vapor 
. Suppose you have 11.0 mol of 
and 13.0 mol of 
in a reactor. Calculate the largest amount of 
that could be produced. Round your answer to the nearest 0.1 mol .
Solution :
The balanced reaction for reaction is :
11.0 13.0
11/2 13/1 (dividing by the co-efficient)
6.5 mol 13 mol (minimum is limiting reagent as it is completely consumed during the reaction)
Therefore, is limiting reagent. It's stoichiometry decides the product formation amount from equation above it is clear that number of moles for will be produced = number of moles of
= 11.0 mol
Answer:
540,000 (5.4X10^5)
Explanation:
kj means Kilojoules, while we are converting to joules.
- Kilo, or k, represents our base value, Joules, multiplied by 10^3. To convert to joules, we would simply multiply by 10^3 (which is 1000)
I’m not sure what the answer is but I hope someone can help!! Maybe answer choice B?
The relation between density, mass and volume is
1) to calculate = volume
given:
Density = 0.0915 g/ mL
mass = 17.7 grams
formula used:
Thus
Volume 
Answer: 193.44 mL
2) the mass of sample will be
Answer: 7 g
