Answer:
Melting
Explanation:
From solid to liquid, the change of state happening is the melting process. The kinetic energy of the particles that makes up the solid is increased and it allows the liquid to flow.
- A solid is a fixed mass with static molecules.
- When thermal energy is added, the kinetic energy increases.
- The kinetic energy of the particles increases and they vibrate about their fixed point in solids.
- This eventually breaks the structure and liquid which begins to flow forms.
This is a melting process.
Answer: B
Explanation: since the balloon is getting bigger it would make sense for the volume to increase ( get bigger) when volume increases the pressure decreases
Answer:
The pH of the solution is 12.31 .
Explanation:
Initial molarity of barium hydroxide =
Initial volume of barium hydroxide =
Final molarity of barium hydroxide =
Final volume of barium hydroxide =
1 mol of barium gives 2 mol of hydroxide ions.
Then 0.0104 M of barium hydroxide will give:
of hydroxide ions
![[OH^-]=0.0208 M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D0.0208%20M)
![pH=14-pOH=14-(-\log[OH^-])](https://tex.z-dn.net/?f=pH%3D14-pOH%3D14-%28-%5Clog%5BOH%5E-%5D%29)
![pH=14-(-\log[0.0208 M])=12.31](https://tex.z-dn.net/?f=pH%3D14-%28-%5Clog%5B0.0208%20M%5D%29%3D12.31)
The pH of the solution is 12.31 .
The gram-formula mass means that the mass of one mole molecule. Then you just need to calculate the elements together. So the gram-formula mass of (NH4)3PO4 is equals to (14+4)*3+31+16*4= 149g/mol. So the answer is (c)
Answer:
A
Explanation:
A ball buried under the ground is the answer because it has no kinetic energy because of it's inability to move
