The frequency of the wave is A
Answer:
0.4912 kJ/K
Explanation:
Using steam table, the properties of water at stage 1 can be determined:
= 400 kPa
= 60°C
Therefore, from steam table:
specific volume 
entropy 
Calculating the specific volume of water after the partition is removed, since the mass is constant and volume of water is doubled:
Final pressure of water in the tank = 
dryness factor after removing the partition
Therefore:
Thus, the entropy change is:
Δs = 
Therefore, the entropy change of water is 0.4912 kJ/K
Answer:
Molality = 66.67g/L
Explanation:
Mass of sucrose = 100g
Volume of water = 1.50L
Molality = mass of substance/ volume in L
Molality = 100 / 1.50
Molality = 66.67g/L
Molality of 100g of sucrose in 1.50L of water is 66.67g/L
Answer:
The answer to your question is CuSO₄
Explanation:
To answer your question just remember the following information
- A chemical reaction is divided into sections
reactants and products
reactants on the left side of the reaction
products on the right side of the reaction
- All the symbols have a meaning
(s) means that that compound is in solid phase
(aq) means that that compound is dissolved in solution.
Then, the answer is CuSO₄
Answer:
The sugar atoms formed new atoms after caramelization.
Explanation:
When sugar is heated to a certain temperature, it becomes caramel. Te formation of caramel from the sugar is a chemical process.
In the context, Pedro is doing an investigation by heating sugar to make caramel. Burning of the sugar crystal is a chemical change as different chemicals are present in both. The caramel formed cannot be revered back to sugar crystal, this also proves the chemical change of caramelization of sugar cubes. Sugar consists of carbon, oxygen and hydrogen atoms. It reacts with atmospheric oxygen atoms to form new groups of atoms and forms caramel.
