Answer:
No
Explanation:
Filling a beaker 200ml of water is not bad because Each beaker's capacity may vary according to the size of different beaker.
Answer:
no. of moles = measured mass of substance/ molar mass of the constituted elements
Explanation:
No. of moles of 2.0g NaCl= 2/(23+35.5) = 0.034mol
Answer:
with the help of adding mass of protons and neutrons
Explanation:
measuring the atomic mass of an element , we add up the proton mass with the neutron mass it gives us the atomic mass
When equal volumes of ethanol and water are mixed to form a solution, the entropy of the resulting solution increases. This is because ethanol and water are both polar substances, making them miscible. The solubility of both substances is high because they have similar attractions due to the presence of hydrogen bonding. This means that molecules of water and ethanol freely move with each other, therefore increasing the dispersal, randomness, and disorder (entropy) of the system.
Answer:
Explanation:
The reaction we need to calculate:
1) 
We need the ClO in the products side, so we use the inverse of this reaction:
2) 
Now we need to combine this two:
The enthalpy of reaction:
