Answer:- density of the liquid is 0.21 gram per mL.
Solution:- 
From given data, mass of cylinder = 10.4 g
mass of cylinder along with liquid = 11.7 g
So, mass of liquid = 11.7 g - 10.4 g = 1.3 g
Volume of liquid = 6.2 mL
Let's divide the mass by the volume to get the density of the liquid:
density = 
So, the density of the liquid is 0.21 gram per mL.
The complete equation for this reaction is,
Ba(NO3)2 + Na2PO4 = 2NaNO3 + BaPO4
Among the compounds present in the reaction, Barium Nitrate, Sodium Phosphate and Sodium Nitrate are soluble ionic compounds. Hence, they will completely ionize into ions. Only BaSO4 is insoluble which becomes the precipitate. Ionic equation is:
Ba2+ + 2NO3- + 2Na+ + PO42- = 2Na+ +NO3- + BaPO4
Cancel like ions,
Ba2+ + PO42- = BaPO4.
Thus, the stoichiometric coefficient of Barium ion is 1.
Answer:
Here's what I get
Explanation:
When a solid is converted to a liquid, heat is absorbed. TRUE.
Temperature remains constant while all of a solid is converted to a liquid. TRUE.
When heat is applied to a solid, the molecular motion decreases as the temperature increases. False. Molecular motion increases as the temperature increases.
The average kinetic energy of the system changes while all of a solid is converted to a liquid. False. The temperature remains constant during a phase change, so the average kinetic energy of the system does not change.
The temperature increases while all of a liquid is converted to a gas. False.
