The mass of the empty flask is 17.4916 g. Now after feeling the ordinary water the mass of the flask is 43.9616 g. Thus the change of weight due to addition of ordinary water is (43.9616 - 17.4916) = 26.47 g.
Now as the density of the ordinary water at 20°C is 0.9982 g/ml, so 26.47 g is equivalent to 
mL of water. Thus the capacity of the flask is 26.5177 mL.
Now the density of heavy water is 1.1053 g/mL at 20°C. Thus 26.5177 mL of heavy water is equivalent to (1.1053×26.5177) = 29.310 g.
Thus the total weight of the flask filled with heavy water will be (17.4916 + 29.310) = 46.8016 g at 20°C.
The "A)The water is part of the system" statement is true in the coffee-cup calorimeter used in the laboratory. The calorimeter is the device used for measuring the amount of the heat flow of a chemical reaction. The coffee-cup calorimeter is one of the most common types of calorimeter which has the water as a part of its system<span>.</span>
Answer:
A
Explanation:
Coupled reactions are reactions in which endergonic reactions obtain the energy to go forward from exergonic reactions.
When benzene diazonium chloride interacts with phenol, the para position of the phenol molecules is associated with the diazonium salt, resulting in
p-hydroxyazobenzene. The coupling reaction is the name given to this process.
Answer:
A calorimeter is an object used for calorimetry, or the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. Differential scanning calorimeters, isothermal micro calorimeters, titration calorimeters and accelerated rate calorimeters are among the most common types.
Explanation:
By providing an alternative reaction<span>mechanism with a lower activation energy.</span>
