Answer: B
Explanation: the 3 in Na3PO4(s) belong to the sodium atom (Na). so in any of these equations, the 3 would have to be with Na.
A- the 3 is along w the PO4, which would make it part of that bond
C- there is no 3 at all for Na in this choice, making it incorrect
D- Again, the 3 is placed on the other half of the bond
Answer:
Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.
Explanation:
Because the ions forming the compound will have to separate from each other then. As a result, ionic compounds disintigrated into a myriad of single lonely ions floating free in water (in solutions). The process is known as electrolytic dissociation.
Eletric current is co-directed movement of particles exhibiting similar charge.
Water doesn't have charged particles constituting it. No electricity.
Ionic compounds do have charged particles (i.e. ions), but those are locked within the lattice and cannot move. No electricity.
Ionic compounds in water disintegrate into free floating (capable of moving) ions (charged particles). All you have to do is get all the positive charges moving one way and all the negative ones moving the other and here you have it - electricity! That is achieved through applying external magnetic field.
This is why ionic compunds can conduct electricity when dissolved in water or melted.
High-strength bolts are used in the construction of many steelstructures. For a 1-in.-nominal-diameter bolt the required minimumbolt tension is 47.25 kips. Assuming the coefficient of staticfriction to be 0.35, determine the required couple that should beapplied to the bolt and nut. The mean diameter of the thread is0.94 in., and the lead id 0.125 in. Neglect friction between thenut and the washer, and assume the bolt to be square-threaded.
![[V]=Liters](https://tex.z-dn.net/?f=%5BV%5D%3DLiters)
![[\eta]=mol](https://tex.z-dn.net/?f=%5B%5Ceta%5D%3Dmol)
