Answer:
phosphorus sulfide should be P2S3
Explanation:
Phosphorus can't exists as an atom itself, it needs to be like oxygen, so it must have 2 atoms covalently bonded to each others, making it P2. Sulfide itself is sulphur bonded in a 3 way exchange. Sulphate is the 2 way exchange, so S3 would be attached to phosphorus, making it P2S3
Answer:
Change in temperature of calorimeter is
Explanation:
Molar mass of anethole = 148.2 g/mol
So, 0.950 g of anethole = of anethole = 0.00641 moles of anethole
1 mol of anethole releases 5541 kJ of heat upon combustion
So, 0.00641 moles of anethole release of heat or 35.52 kJ of heat
7.854 kJ of heat increases temperature of calorimeter.
So, 35.52 kJ of heat increases or temperature of calorimeter
So, change in temperature of calorimeter is
Work will be done only when the force is applied in the direction where the object moves. Else, there is no work done inspite of applying force.
<u>Explanation:</u>
According to the standard definition of work, it's simply the product of force applied on the object to the distance it travels due to the force. But, the fact lies that work depends on the direction of the force applied on the object.
The more reliable definition of work done is when the force is applied in the direction of motion of the object with which there should be a change in the kinetic energy of an object.
You can simply think of the wall which is standing straight. If you try to apply force by your hands on the wall, you are actually working, but the agony is that there is not work done technically as there is no movement in the direction of the force applied.
A balance is used to determine Mass